merge from @mbeacom

@@ -7,23 +7,20 @@
 # for example, 192.168.1.100:1935 10.10.10.100:1935
 # for example, 192.168.1.100:1935 10.10.10.100:1935
 # where the ip is optional, default to 0.0.0.0, that is 1935 equals to 0.0.0.0:1935
 # where the ip is optional, default to 0.0.0.0, that is 1935 equals to 0.0.0.0:1935
 listen              1935;
 listen              1935;
-# change to this dir as the cwd.
-# ignore if empty or not configed.
-work_dir            /usr/local/srs;
 # the pid file
 # the pid file
 # to ensure only one process can use a pid file
 # to ensure only one process can use a pid file
-# and provides the current running process id, for script, 
+# and provides the current running process id, for script,
 # for example, init.d script to manage the server.
 # for example, init.d script to manage the server.
 # default: ./objs/srs.pid
 # default: ./objs/srs.pid
 pid                 ./objs/srs.pid;
 pid                 ./objs/srs.pid;
 # the default chunk size is 128, max is 65536,
 # the default chunk size is 128, max is 65536,
 # some client does not support chunk size change,
 # some client does not support chunk size change,
-# however, most clients supports it and it can improve 
+# however, most clients support it and it can improve
 # performance about 10%.
 # performance about 10%.
 # default: 60000
 # default: 60000
 chunk_size          60000;
 chunk_size          60000;
 # the logs dir.
 # the logs dir.
-# if enabled ffmpeg, each stracoding stream will create a log file.
+# if enabled ffmpeg, each transcoding stream will create a log file.
 # /dev/null to disable the log.
 # /dev/null to disable the log.
 # default: ./objs
 # default: ./objs
 ff_log_dir          ./objs;
 ff_log_dir          ./objs;
@@ -43,8 +40,8 @@ srs_log_file        ./objs/srs.log;
 # if exceed the max connections, server will drop the new connection.
 # if exceed the max connections, server will drop the new connection.
 # default: 1000
 # default: 1000
 max_connections     1000;
 max_connections     1000;
-# whether start as deamon
-# @remark: donot support reload.
+# whether start as daemon
+# @remark: do not support reload.
 # default: on
 # default: on
 daemon              on;
 daemon              on;
 # whether use utc_time to generate the time struct,
 # whether use utc_time to generate the time struct,
@@ -65,7 +62,7 @@ pithy_print_ms      10000;
 # @remark, the ip report to server, is retrieve from system stat,
 # @remark, the ip report to server, is retrieve from system stat,
 #       which need the config item stats.network.
 #       which need the config item stats.network.
 heartbeat {
 heartbeat {
-    # whether heartbeat is enalbed.
+    # whether heartbeat is enabled.
     # default: off
     # default: off
     enabled         off;
     enabled         off;
     # the interval seconds for heartbeat,
     # the interval seconds for heartbeat,
@@ -80,7 +77,7 @@ heartbeat {
     #   }
     #   }
     # default: http://127.0.0.1:8085/api/v1/servers
     # default: http://127.0.0.1:8085/api/v1/servers
     url             http://127.0.0.1:8085/api/v1/servers;
     url             http://127.0.0.1:8085/api/v1/servers;
-    # the id of devide.
+    # the id of device.
     device_id       "my-srs-device";
     device_id       "my-srs-device";
     # whether report with summaries
     # whether report with summaries
     # if on, put /api/v1/summaries to the request data:
     # if on, put /api/v1/summaries to the request data:
@@ -104,7 +101,7 @@ stats {
     # default: 0
     # default: 0
     network         0;
     network         0;
     # the device name to stat the disk iops.
     # the device name to stat the disk iops.
-    # ignore the device of /proc/diskstats if not configed.
+    # ignore the device of /proc/diskstats if not configured.
     disk            sda sdb xvda xvdb;
     disk            sda sdb xvda xvdb;
 }
 }
 
 
@@ -145,15 +142,15 @@ http_api {
         allow_update        off;
         allow_update        off;
     }
     }
 }
 }
-# embeded http server in srs.
+# embedded http server in srs.
 # the http streaming config, for HLS/HDS/DASH/HTTPProgressive
 # the http streaming config, for HLS/HDS/DASH/HTTPProgressive
 # global config for http streaming, user must config the http section for each vhost.
 # global config for http streaming, user must config the http section for each vhost.
 # the embed http server used to substitute nginx in ./objs/nginx,
 # the embed http server used to substitute nginx in ./objs/nginx,
-# for example, srs runing in arm, can provides RTMP and HTTP service, only with srs installed.
+# for example, srs running in arm, can provides RTMP and HTTP service, only with srs installed.
 # user can access the http server pages, generally:
 # user can access the http server pages, generally:
 #       curl http://192.168.1.170:80/srs.html
 #       curl http://192.168.1.170:80/srs.html
 # which will show srs version and welcome to srs.
 # which will show srs version and welcome to srs.
-# @remark, the http embeded stream need to config the vhost, for instance, the __defaultVhost__
+# @remark, the http embedded stream need to config the vhost, for instance, the __defaultVhost__
 # need to open the feature http of vhost.
 # need to open the feature http of vhost.
 http_server {
 http_server {
     # whether http streaming service is enabled.
     # whether http streaming service is enabled.
@@ -267,20 +264,20 @@ vhost scope.vhost.srs.com {
     # if off, all request access denied.
     # if off, all request access denied.
     # default: on
     # default: on
     enabled         off;
     enabled         off;
-    
+
     # whether enable min delay mode for vhost.
     # whether enable min delay mode for vhost.
-    # for min latence mode:
+    # for min latency mode:
     # 1. disable the publish.mr for vhost.
     # 1. disable the publish.mr for vhost.
     # 2. use timeout for cond wait for consumer queue.
     # 2. use timeout for cond wait for consumer queue.
     # @see https://github.com/ossrs/srs/issues/257
     # @see https://github.com/ossrs/srs/issues/257
     # default: off
     # default: off
     min_latency     off;
     min_latency     off;
-    
+
     # whether enable the TCP_NODELAY
     # whether enable the TCP_NODELAY
     # if on, set the nodelay of fd by setsockopt
     # if on, set the nodelay of fd by setsockopt
     # default: off
     # default: off
     tcp_nodelay     off;
     tcp_nodelay     off;
-    
+
     # the default chunk size is 128, max is 65536,
     # the default chunk size is 128, max is 65536,
     # some client does not support chunk size change,
     # some client does not support chunk size change,
     # vhost chunk size will override the global value.
     # vhost chunk size will override the global value.
@@ -314,7 +311,7 @@ vhost cluster.srs.com {
         # @remark user can specifies multiple origin for error backup, by space,
         # @remark user can specifies multiple origin for error backup, by space,
         # for example, 192.168.1.100:1935 192.168.1.101:1935 192.168.1.102:1935
         # for example, 192.168.1.100:1935 192.168.1.101:1935 192.168.1.102:1935
         origin          127.0.0.1:1935 localhost:1935;
         origin          127.0.0.1:1935 localhost:1935;
-        
+
         # for edge, whether open the token traverse mode,
         # for edge, whether open the token traverse mode,
         # if token traverse on, all connections of edge will forward to origin to check(auth),
         # if token traverse on, all connections of edge will forward to origin to check(auth),
         # it's very important for the edge to do the token auth.
         # it's very important for the edge to do the token auth.
@@ -322,16 +319,16 @@ vhost cluster.srs.com {
         # but if user prefer origin check(auth), the token_traverse if better solution.
         # but if user prefer origin check(auth), the token_traverse if better solution.
         # default: off
         # default: off
         token_traverse  off;
         token_traverse  off;
-        
+
         # the vhost to transform for edge,
         # the vhost to transform for edge,
         # to fetch from the specified vhost at origin,
         # to fetch from the specified vhost at origin,
         # if not specified, use the current vhost of edge in origin, the variable [vhost].
         # if not specified, use the current vhost of edge in origin, the variable [vhost].
         # default: [vhost]
         # default: [vhost]
         vhost           same.edge.srs.com;
         vhost           same.edge.srs.com;
-        
+
         # when upnode(forward to, edge push to, edge pull from) is srs,
         # when upnode(forward to, edge push to, edge pull from) is srs,
         # it's strongly recommend to open the debug_srs_upnode,
         # it's strongly recommend to open the debug_srs_upnode,
-        # when connect to upnode, it will take the debug info, 
+        # when connect to upnode, it will take the debug info,
         # for example, the id, source id, pid.
         # for example, the id, source id, pid.
         # please see: https://github.com/ossrs/srs/wiki/v1_CN_SrsLog
         # please see: https://github.com/ossrs/srs/wiki/v1_CN_SrsLog
         # default: on
         # default: on
@@ -397,20 +394,20 @@ vhost play.srs.com {
         # default: on
         # default: on
         gop_cache       off;
         gop_cache       off;
         # the max live queue length in seconds.
         # the max live queue length in seconds.
-        # if the messages in the queue exceed the max length, 
+        # if the messages in the queue exceed the max length,
         # drop the old whole gop.
         # drop the old whole gop.
         # default: 30
         # default: 30
         queue_length    10;
         queue_length    10;
-    
+
         # about the stream monotonically increasing:
         # about the stream monotonically increasing:
-        #   1. video timestamp is monotonically increasing, 
+        #   1. video timestamp is monotonically increasing,
         #   2. audio timestamp is monotonically increasing,
         #   2. audio timestamp is monotonically increasing,
         #   3. video and audio timestamp is interleaved/mixed monotonically increasing.
         #   3. video and audio timestamp is interleaved/mixed monotonically increasing.
         # it's specified by RTMP specification, @see 3. Byte Order, Alignment, and Time Format
         # it's specified by RTMP specification, @see 3. Byte Order, Alignment, and Time Format
         # however, some encoder cannot provides this feature, please set this to off to ignore time jitter.
         # however, some encoder cannot provides this feature, please set this to off to ignore time jitter.
         # the time jitter algorithm:
         # the time jitter algorithm:
         #   1. full, to ensure stream start at zero, and ensure stream monotonically increasing.
         #   1. full, to ensure stream start at zero, and ensure stream monotonically increasing.
-        #   2. zero, only ensure sttream start at zero, ignore timestamp jitter.
+        #   2. zero, only ensure stream start at zero, ignore timestamp jitter.
         #   3. off, disable the time jitter algorithm, like atc.
         #   3. off, disable the time jitter algorithm, like atc.
         # default: full
         # default: full
         time_jitter             full;
         time_jitter             full;
@@ -427,7 +424,7 @@ vhost play.srs.com {
         # server use atc to delivery stream to edge/client, where stream time from master/slave server
         # server use atc to delivery stream to edge/client, where stream time from master/slave server
         # is always the same, client/tools can slice RTMP stream to HLS according to the same time,
         # is always the same, client/tools can slice RTMP stream to HLS according to the same time,
         # if the time not the same, the HLS stream cannot slice to support system backup.
         # if the time not the same, the HLS stream cannot slice to support system backup.
-        # 
+        #
         # @see http://www.adobe.com/cn/devnet/adobe-media-server/articles/varnish-sample-for-failover.html
         # @see http://www.adobe.com/cn/devnet/adobe-media-server/articles/varnish-sample-for-failover.html
         # @see http://www.baidu.com/#wd=hds%20hls%20atc
         # @see http://www.baidu.com/#wd=hds%20hls%20atc
         #
         #
@@ -439,14 +436,14 @@ vhost play.srs.com {
         # always ignore the onMetaData if atc_auto is off.
         # always ignore the onMetaData if atc_auto is off.
         # default: off
         # default: off
         atc_auto        off;
         atc_auto        off;
-    
-        # set the MW(merged-write) latency in ms. 
+
+        # set the MW(merged-write) latency in ms.
         # SRS always set mw on, so we just set the latency value.
         # SRS always set mw on, so we just set the latency value.
         # the latency of stream >= mw_latency + mr_latency
         # the latency of stream >= mw_latency + mr_latency
         # the value recomment is [300, 1800]
         # the value recomment is [300, 1800]
         # default: 350
         # default: 350
         mw_latency      350;
         mw_latency      350;
-    
+
         # the minimal packets send interval in ms,
         # the minimal packets send interval in ms,
         # used to control the ndiff of stream by srs_rtmp_dump,
         # used to control the ndiff of stream by srs_rtmp_dump,
         # for example, some device can only accept some stream which
         # for example, some device can only accept some stream which
@@ -487,33 +484,33 @@ vhost atc.srs.com {
 vhost mrw.srs.com {
 vhost mrw.srs.com {
     # @see scope.vhost.srs.com
     # @see scope.vhost.srs.com
     min_latency     off;
     min_latency     off;
-    
+
     # @see play.srs.com
     # @see play.srs.com
     play {
     play {
         mw_latency      350;
         mw_latency      350;
     }
     }
-    
+
     # @see publish.srs.com
     # @see publish.srs.com
     publish {
     publish {
         mr          on;
         mr          on;
-        mr_latenct  350;
+        mr_latency  350;
     }
     }
 }
 }
 
 
-# the vhost for min delay, donot cache any stream.
+# the vhost for min delay, do not cache any stream.
 vhost min.delay.com {
 vhost min.delay.com {
     # @see scope.vhost.srs.com
     # @see scope.vhost.srs.com
     min_latency     on;
     min_latency     on;
     # @see scope.vhost.srs.com
     # @see scope.vhost.srs.com
     tcp_nodelay     on;
     tcp_nodelay     on;
-    
+
     # @see play.srs.com
     # @see play.srs.com
     play {
     play {
         mw_latency      100;
         mw_latency      100;
         gop_cache       off;
         gop_cache       off;
         queue_length    10;
         queue_length    10;
     }
     }
-    
+
     # @see publish.srs.com
     # @see publish.srs.com
     publish {
     publish {
         mr          off;
         mr          off;
@@ -534,7 +531,7 @@ vhost stream.control.com {
     min_latency     on;
     min_latency     on;
     # @see scope.vhost.srs.com
     # @see scope.vhost.srs.com
     tcp_nodelay     on;
     tcp_nodelay     on;
-    
+
     # @see play.srs.com
     # @see play.srs.com
     play {
     play {
         mw_latency      100;
         mw_latency      100;
@@ -542,7 +539,7 @@ vhost stream.control.com {
         send_min_interval       10.0;
         send_min_interval       10.0;
         reduce_sequence_header  on;
         reduce_sequence_header  on;
     }
     }
-    
+
     # @see publish.srs.com
     # @see publish.srs.com
     publish {
     publish {
         mr          off;
         mr          off;
@@ -564,12 +561,12 @@ vhost publish.srs.com {
         #       memory(buffer) = latency * kbps / 8
         #       memory(buffer) = latency * kbps / 8
         # for example, latency=500ms, kbps=3000kbps, each publish connection will consume
         # for example, latency=500ms, kbps=3000kbps, each publish connection will consume
         #       memory = 500 * 3000 / 8 = 187500B = 183KB
         #       memory = 500 * 3000 / 8 = 187500B = 183KB
-        # when there are 2500 publisher, the total memory of SRS atleast:
+        # when there are 2500 publisher, the total memory of SRS at least:
         #       183KB * 2500 = 446MB
         #       183KB * 2500 = 446MB
-        # the value recomment is [300, 2000]
+        # the recommended value is [300, 2000]
         # default: 350
         # default: 350
         mr_latency  350;
         mr_latency  350;
-        
+
         # the 1st packet timeout in ms for encoder.
         # the 1st packet timeout in ms for encoder.
         # default: 20000
         # default: 20000
         firstpkt_timeout    20000;
         firstpkt_timeout    20000;
@@ -584,7 +581,7 @@ vhost publish.srs.com {
     }
     }
 }
 }
 
 
-# the vhost for antisuck.
+# the vhost for anti-suck.
 vhost refer.anti_suck.com {
 vhost refer.anti_suck.com {
     # refer hotlink-denial.
     # refer hotlink-denial.
     refer {
     refer {
@@ -597,12 +594,12 @@ vhost refer.anti_suck.com {
         # default: not specified.
         # default: not specified.
         all           github.com github.io;
         all           github.com github.io;
         # refer for publish clients specified.
         # refer for publish clients specified.
-        # the common refer is not overrided by this.
+        # the common refer is not overridden by this.
         # if not specified this field, allow all.
         # if not specified this field, allow all.
         # default: not specified.
         # default: not specified.
         publish   github.com github.io;
         publish   github.com github.io;
         # refer for play clients specified.
         # refer for play clients specified.
-        # the common refer is not overrided by this.
+        # the common refer is not overridden by this.
         # if not specified this field, allow all.
         # if not specified this field, allow all.
         # default: not specified.
         # default: not specified.
         play      github.com github.io;
         play      github.com github.io;
@@ -624,7 +621,7 @@ vhost bandcheck.srs.com {
         # if invalid key, server disconnect and abort the bandwidth check.
         # if invalid key, server disconnect and abort the bandwidth check.
         key             "35c9b402c12a7246868752e2878f7e0e";
         key             "35c9b402c12a7246868752e2878f7e0e";
         # the interval in seconds for bandwidth check,
         # the interval in seconds for bandwidth check,
-        # server donot allow new test request.
+        # server do not allow new test request.
         # default: 30
         # default: 30
         interval        30;
         interval        30;
         # the max available check bandwidth in kbps.
         # the max available check bandwidth in kbps.
@@ -637,7 +634,7 @@ vhost bandcheck.srs.com {
 # the security to allow or deny clients.
 # the security to allow or deny clients.
 vhost security.srs.com {
 vhost security.srs.com {
     # security for host to allow or deny clients.
     # security for host to allow or deny clients.
-    # @see https://github.com/ossrs/srs/issues/211   
+    # @see https://github.com/ossrs/srs/issues/211
     security {
     security {
         # whether enable the security for vhost.
         # whether enable the security for vhost.
         # default: off
         # default: off
@@ -670,7 +667,7 @@ vhost http.static.srs.com {
         # whether enabled the http static service for vhost.
         # whether enabled the http static service for vhost.
         # default: off
         # default: off
         enabled     on;
         enabled     on;
-        # the url to mount to, 
+        # the url to mount to,
         # typical mount to [vhost]/
         # typical mount to [vhost]/
         # the variables:
         # the variables:
         #       [vhost] current vhost for http server.
         #       [vhost] current vhost for http server.
@@ -710,7 +707,7 @@ vhost http.remux.srs.com {
         # @remark 0 to disable fast cache for http audio stream.
         # @remark 0 to disable fast cache for http audio stream.
         # default: 0
         # default: 0
         fast_cache  30;
         fast_cache  30;
-        # the stream mout for rtmp to remux to live streaming.
+        # the stream mount for rtmp to remux to live streaming.
         # typical mount to [vhost]/[app]/[stream].flv
         # typical mount to [vhost]/[app]/[stream].flv
         # the variables:
         # the variables:
         #       [vhost] current vhost for http live stream.
         #       [vhost] current vhost for http live stream.
@@ -748,7 +745,7 @@ vhost http.remux.srs.com {
 # the http hook callback vhost, srs will invoke the hooks for specified events.
 # the http hook callback vhost, srs will invoke the hooks for specified events.
 vhost hooks.callback.srs.com {
 vhost hooks.callback.srs.com {
     http_hooks {
     http_hooks {
-        # whether the http hooks enalbe.
+        # whether the http hooks enable.
         # default off.
         # default off.
         enabled         on;
         enabled         on;
         # when client connect to vhost/app, call the hook,
         # when client connect to vhost/app, call the hook,
@@ -760,7 +757,7 @@ vhost hooks.callback.srs.com {
         #           "tcUrl": "rtmp://video.test.com/live?key=d2fa801d08e3f90ed1e1670e6e52651a",
         #           "tcUrl": "rtmp://video.test.com/live?key=d2fa801d08e3f90ed1e1670e6e52651a",
         #           "pageUrl": "http://www.test.com/live.html"
         #           "pageUrl": "http://www.test.com/live.html"
         #       }
         #       }
-        # if valid, the hook must return HTTP code 200(Stauts OK) and response
+        # if valid, the hook must return HTTP code 200(Status OK) and response
         # an int value specifies the error code(0 corresponding to success):
         # an int value specifies the error code(0 corresponding to success):
         #       0
         #       0
         # support multiple api hooks, format:
         # support multiple api hooks, format:
@@ -774,7 +771,7 @@ vhost hooks.callback.srs.com {
         #           "ip": "192.168.1.10", "vhost": "video.test.com", "app": "live",
         #           "ip": "192.168.1.10", "vhost": "video.test.com", "app": "live",
         #           "send_bytes": 10240, "recv_bytes": 10240
         #           "send_bytes": 10240, "recv_bytes": 10240
         #       }
         #       }
-        # if valid, the hook must return HTTP code 200(Stauts OK) and response
+        # if valid, the hook must return HTTP code 200(Status OK) and response
         # an int value specifies the error code(0 corresponding to success):
         # an int value specifies the error code(0 corresponding to success):
         #       0
         #       0
         # support multiple api hooks, format:
         # support multiple api hooks, format:
@@ -788,7 +785,7 @@ vhost hooks.callback.srs.com {
         #           "ip": "192.168.1.10", "vhost": "video.test.com", "app": "live",
         #           "ip": "192.168.1.10", "vhost": "video.test.com", "app": "live",
         #           "stream": "livestream"
         #           "stream": "livestream"
         #       }
         #       }
-        # if valid, the hook must return HTTP code 200(Stauts OK) and response
+        # if valid, the hook must return HTTP code 200(Status OK) and response
         # an int value specifies the error code(0 corresponding to success):
         # an int value specifies the error code(0 corresponding to success):
         #       0
         #       0
         # support multiple api hooks, format:
         # support multiple api hooks, format:
@@ -802,7 +799,7 @@ vhost hooks.callback.srs.com {
         #           "ip": "192.168.1.10", "vhost": "video.test.com", "app": "live",
         #           "ip": "192.168.1.10", "vhost": "video.test.com", "app": "live",
         #           "stream": "livestream"
         #           "stream": "livestream"
         #       }
         #       }
-        # if valid, the hook must return HTTP code 200(Stauts OK) and response
+        # if valid, the hook must return HTTP code 200(Status OK) and response
         # an int value specifies the error code(0 corresponding to success):
         # an int value specifies the error code(0 corresponding to success):
         #       0
         #       0
         # support multiple api hooks, format:
         # support multiple api hooks, format:
@@ -817,7 +814,7 @@ vhost hooks.callback.srs.com {
         #           "stream": "livestream",
         #           "stream": "livestream",
         #           "pageUrl": "http://www.test.com/live.html"
         #           "pageUrl": "http://www.test.com/live.html"
         #       }
         #       }
-        # if valid, the hook must return HTTP code 200(Stauts OK) and response
+        # if valid, the hook must return HTTP code 200(Status OK) and response
         # an int value specifies the error code(0 corresponding to success):
         # an int value specifies the error code(0 corresponding to success):
         #       0
         #       0
         # support multiple api hooks, format:
         # support multiple api hooks, format:
@@ -831,7 +828,7 @@ vhost hooks.callback.srs.com {
         #           "ip": "192.168.1.10", "vhost": "video.test.com", "app": "live",
         #           "ip": "192.168.1.10", "vhost": "video.test.com", "app": "live",
         #           "stream": "livestream"
         #           "stream": "livestream"
         #       }
         #       }
-        # if valid, the hook must return HTTP code 200(Stauts OK) and response
+        # if valid, the hook must return HTTP code 200(Status OK) and response
         # an int value specifies the error code(0 corresponding to success):
         # an int value specifies the error code(0 corresponding to success):
         #       0
         #       0
         # support multiple api hooks, format:
         # support multiple api hooks, format:
@@ -847,7 +844,7 @@ vhost hooks.callback.srs.com {
         #           "cwd": "/usr/local/srs",
         #           "cwd": "/usr/local/srs",
         #           "file": "./objs/nginx/html/live/livestream.1420254068776.flv"
         #           "file": "./objs/nginx/html/live/livestream.1420254068776.flv"
         #       }
         #       }
-        # if valid, the hook must return HTTP code 200(Stauts OK) and response
+        # if valid, the hook must return HTTP code 200(Status OK) and response
         # an int value specifies the error code(0 corresponding to success):
         # an int value specifies the error code(0 corresponding to success):
         #       0
         #       0
         on_dvr          http://127.0.0.1:8085/api/v1/dvrs http://localhost:8085/api/v1/dvrs;
         on_dvr          http://127.0.0.1:8085/api/v1/dvrs http://localhost:8085/api/v1/dvrs;
@@ -866,7 +863,7 @@ vhost hooks.callback.srs.com {
         #           "m3u8_url": "live/livestream/live.m3u8",
         #           "m3u8_url": "live/livestream/live.m3u8",
         #           "seq_no": 100
         #           "seq_no": 100
         #       }
         #       }
-        # if valid, the hook must return HTTP code 200(Stauts OK) and response
+        # if valid, the hook must return HTTP code 200(Status OK) and response
         # an int value specifies the error code(0 corresponding to success):
         # an int value specifies the error code(0 corresponding to success):
         #       0
         #       0
         on_hls          http://127.0.0.1:8085/api/v1/hls http://localhost:8085/api/v1/hls;
         on_hls          http://127.0.0.1:8085/api/v1/hls http://localhost:8085/api/v1/hls;
@@ -891,10 +888,10 @@ vhost exec.srs.com {
         enabled     off;
         enabled     off;
         # when publish stream, exec the process with variables:
         # when publish stream, exec the process with variables:
         #       [vhost] the input stream vhost.
         #       [vhost] the input stream vhost.
-        #       [port] the intput stream port.
+        #       [port] the input stream port.
         #       [app] the input stream app.
         #       [app] the input stream app.
         #       [stream] the input stream name.
         #       [stream] the input stream name.
-        #       [engine] the tanscode engine name.
+        #       [engine] the transcode engine name.
         # other variables for exec only:
         # other variables for exec only:
         #       [url] the rtmp url which trigger the publish.
         #       [url] the rtmp url which trigger the publish.
         #       [tcUrl] the client request tcUrl.
         #       [tcUrl] the client request tcUrl.
@@ -909,7 +906,7 @@ vhost exec.srs.com {
 vhost with-hls.srs.com {
 vhost with-hls.srs.com {
     hls {
     hls {
         # whether the hls is enabled.
         # whether the hls is enabled.
-        # if off, donot write hls(ts and m3u8) when publish.
+        # if off, do not write hls(ts and m3u8) when publish.
         # default: off
         # default: off
         enabled         on;
         enabled         on;
         # the hls fragment in seconds, the duration of a piece of ts.
         # the hls fragment in seconds, the duration of a piece of ts.
@@ -923,14 +920,14 @@ vhost with-hls.srs.com {
         hls_td_ratio    1.5;
         hls_td_ratio    1.5;
         # the audio overflow ratio.
         # the audio overflow ratio.
         # for pure audio, the duration to reap the segment.
         # for pure audio, the duration to reap the segment.
-        # for example, the hls_fragment is 10s, hsl_aof_ratio is 2.0,
-        # the segemnt will reap to 20s for pure audio.
+        # for example, the hls_fragment is 10s, hls_aof_ratio is 2.0,
+        # the segment will reap to 20s for pure audio.
         # default: 2.0
         # default: 2.0
         hls_aof_ratio   2.0;
         hls_aof_ratio   2.0;
         # the hls window in seconds, the number of ts in m3u8.
         # the hls window in seconds, the number of ts in m3u8.
         # default: 60
         # default: 60
         hls_window      60;
         hls_window      60;
-        # the error strategy. canbe:
+        # the error strategy. can be:
         #       ignore, disable the hls.
         #       ignore, disable the hls.
         #       disconnect, require encoder republish.
         #       disconnect, require encoder republish.
         #       continue, ignore failed try to continue output hls.
         #       continue, ignore failed try to continue output hls.
@@ -939,14 +936,14 @@ vhost with-hls.srs.com {
         hls_on_error    continue;
         hls_on_error    continue;
         # the hls storage: disk, ram or both.
         # the hls storage: disk, ram or both.
         #       disk, to write hls m3u8/ts to disk.
         #       disk, to write hls m3u8/ts to disk.
-        #       ram, serve m3u8/ts in memory, which use embeded http server to delivery.
+        #       ram, serve m3u8/ts in memory, which use embedded http server to delivery.
         #       both, disk and ram.
         #       both, disk and ram.
         # default: disk
         # default: disk
         hls_storage     disk;
         hls_storage     disk;
         # the hls output path.
         # the hls output path.
-        # the m3u8 file is configed by hls_path/hls_m3u8_file, the default is:
+        # the m3u8 file is configured by hls_path/hls_m3u8_file, the default is:
         #       ./objs/nginx/html/[app]/[stream].m3u8
         #       ./objs/nginx/html/[app]/[stream].m3u8
-        # the ts file is configed by hls_path/hls_ts_file, the default is:
+        # the ts file is configured by hls_path/hls_ts_file, the default is:
         #       ./objs/nginx/html/[app]/[stream]-[seq].ts
         #       ./objs/nginx/html/[app]/[stream]-[seq].ts
         # @remark the hls_path is compatible with srs v1 config.
         # @remark the hls_path is compatible with srs v1 config.
         # default: ./objs/nginx/html
         # default: ./objs/nginx/html
@@ -956,7 +953,6 @@ vhost with-hls.srs.com {
         #       [vhost], the vhost of stream.
         #       [vhost], the vhost of stream.
         #       [app], the app of stream.
         #       [app], the app of stream.
         #       [stream], the stream name of stream.
         #       [stream], the stream name of stream.
-        # recommend: [vhost]/[app]/[stream].m3u8
         # default: [app]/[stream].m3u8
         # default: [app]/[stream].m3u8
         hls_m3u8_file   [app]/[stream].m3u8;
         hls_m3u8_file   [app]/[stream].m3u8;
         # the hls ts file name.
         # the hls ts file name.
@@ -968,24 +964,23 @@ vhost with-hls.srs.com {
         #       [01], replace this const to current month.
         #       [01], replace this const to current month.
         #       [02], replace this const to current date.
         #       [02], replace this const to current date.
         #       [15], replace this const to current hour.
         #       [15], replace this const to current hour.
-        #       [04], repleace this const to current minute.
-        #       [05], repleace this const to current second.
-        #       [999], repleace this const to current millisecond.
+        #       [04], replace this const to current minute.
+        #       [05], replace this const to current second.
+        #       [999], replace this const to current millisecond.
         #       [timestamp],replace this const to current UNIX timestamp in ms.
         #       [timestamp],replace this const to current UNIX timestamp in ms.
         #       [seq], the sequence number of ts.
         #       [seq], the sequence number of ts.
         # @see https://github.com/ossrs/srs/wiki/v2_CN_DVR#custom-path
         # @see https://github.com/ossrs/srs/wiki/v2_CN_DVR#custom-path
         # @see https://github.com/ossrs/srs/wiki/v2_CN_DeliveryHLS#hls-config
         # @see https://github.com/ossrs/srs/wiki/v2_CN_DeliveryHLS#hls-config
-        # recommend: [vhost]/[app]/[stream]-[seq].ts
         # default: [app]/[stream]-[seq].ts
         # default: [app]/[stream]-[seq].ts
         hls_ts_file     [app]/[stream]-[seq].ts;
         hls_ts_file     [app]/[stream]-[seq].ts;
         # whether use floor for the hls_ts_file path generation.
         # whether use floor for the hls_ts_file path generation.
         # if on, use floor(timestamp/hls_fragment) as the variable [timestamp],
         # if on, use floor(timestamp/hls_fragment) as the variable [timestamp],
-        #       and use enahanced algorithm to calc deviation for segment.
+        #       and use enhanced algorithm to calc deviation for segment.
         # @remark when floor on, recommend the hls_segment>=2*gop.
         # @remark when floor on, recommend the hls_segment>=2*gop.
         # default: off
         # default: off
         hls_ts_floor    off;
         hls_ts_floor    off;
         # the hls entry prefix, which is base url of ts url.
         # the hls entry prefix, which is base url of ts url.
-        # for exmaple, the prefix is:
+        # for example, the prefix is:
         #         http://your-server/
         #         http://your-server/
         # then, the ts path in m3u8 will be like:
         # then, the ts path in m3u8 will be like:
         #         http://your-server/live/livestream-0.ts
         #         http://your-server/live/livestream-0.ts
@@ -994,7 +989,7 @@ vhost with-hls.srs.com {
         # optional, default to empty string.
         # optional, default to empty string.
         hls_entry_prefix http://your-server;
         hls_entry_prefix http://your-server;
         # the hls mount for hls_storage ram,
         # the hls mount for hls_storage ram,
-        # which use srs embeded http server to delivery HLS,
+        # which use srs embedded http server to delivery HLS,
         # where the mount specifies the HTTP url to mount.
         # where the mount specifies the HTTP url to mount.
         # @see the mount of http_remux.
         # @see the mount of http_remux.
         # @remark the hls_mount must endswith .m3u8.
         # @remark the hls_mount must endswith .m3u8.
@@ -1003,7 +998,7 @@ vhost with-hls.srs.com {
         # the default audio codec of hls.
         # the default audio codec of hls.
         # when codec changed, write the PAT/PMT table, but maybe ok util next ts.
         # when codec changed, write the PAT/PMT table, but maybe ok util next ts.
         # so user can set the default codec for mp3.
         # so user can set the default codec for mp3.
-        # the available audio codec: 
+        # the available audio codec:
         #       aac, mp3, an
         #       aac, mp3, an
         # default: aac
         # default: aac
         hls_acodec      aac;
         hls_acodec      aac;
@@ -1039,7 +1034,7 @@ vhost with-hls.srs.com {
         # for the hls http callback, @see http_hooks.on_hls of vhost hooks.callback.srs.com
         # for the hls http callback, @see http_hooks.on_hls of vhost hooks.callback.srs.com
         # @read https://github.com/ossrs/srs/wiki/v2_CN_DeliveryHLS#http-callback
         # @read https://github.com/ossrs/srs/wiki/v2_CN_DeliveryHLS#http-callback
         # @read https://github.com/ossrs/srs/wiki/v2_EN_DeliveryHLS#http-callback
         # @read https://github.com/ossrs/srs/wiki/v2_EN_DeliveryHLS#http-callback
-        
+
         # on_hls_notify, never config in here, should config in http_hooks.
         # on_hls_notify, never config in here, should config in http_hooks.
         # we support the variables to generate the notify url:
         # we support the variables to generate the notify url:
         #       [app], replace with the app.
         #       [app], replace with the app.
@@ -1054,7 +1049,7 @@ vhost with-hls.srs.com {
 vhost no-hls.srs.com {
 vhost no-hls.srs.com {
     hls {
     hls {
         # whether the hls is enabled.
         # whether the hls is enabled.
-        # if off, donot write hls(ts and m3u8) when publish.
+        # if off, do not write hls(ts and m3u8) when publish.
         # default: off
         # default: off
         enabled         off;
         enabled         off;
     }
     }
@@ -1087,7 +1082,7 @@ vhost dvr.srs.com {
         # whether enabled dvr features
         # whether enabled dvr features
         # default: off
         # default: off
         enabled         on;
         enabled         on;
-        # the filter for dvr to aplly to.
+        # the filter for dvr to apply to.
         #       all, dvr all streams of all apps.
         #       all, dvr all streams of all apps.
         #       <app>/<stream>, apply to specified stream of app.
         #       <app>/<stream>, apply to specified stream of app.
         # for example, to dvr the following two streams:
         # for example, to dvr the following two streams:
@@ -1109,9 +1104,9 @@ vhost dvr.srs.com {
         #       [01], replace this const to current month.
         #       [01], replace this const to current month.
         #       [02], replace this const to current date.
         #       [02], replace this const to current date.
         #       [15], replace this const to current hour.
         #       [15], replace this const to current hour.
-        #       [04], repleace this const to current minute.
-        #       [05], repleace this const to current second.
-        #       [999], repleace this const to current millisecond.
+        #       [04], replace this const to current minute.
+        #       [05], replace this const to current second.
+        #       [999], replace this const to current millisecond.
         #       [timestamp],replace this const to current UNIX timestamp in ms.
         #       [timestamp],replace this const to current UNIX timestamp in ms.
         # @remark we use golang time format "2006-01-02 15:04:05.999" as "[2006]-[01]-[02]_[15].[04].[05]_[999]"
         # @remark we use golang time format "2006-01-02 15:04:05.999" as "[2006]-[01]-[02]_[15].[04].[05]_[999]"
         # for example, for url rtmp://ossrs.net/live/livestream and time 2015-01-03 10:57:30.776
         # for example, for url rtmp://ossrs.net/live/livestream and time 2015-01-03 10:57:30.776
@@ -1136,7 +1131,7 @@ vhost dvr.srs.com {
         #       segment,session apply it.
         #       segment,session apply it.
         # default: ./objs/nginx/html/[app]/[stream].[timestamp].flv
         # default: ./objs/nginx/html/[app]/[stream].[timestamp].flv
         dvr_path        ./objs/nginx/html/[app]/[stream].[timestamp].flv;
         dvr_path        ./objs/nginx/html/[app]/[stream].[timestamp].flv;
-        # the duration for dvr file, reap if exeed, in seconds.
+        # the duration for dvr file, reap if exceed, in seconds.
         #       segment apply it.
         #       segment apply it.
         #       session,append ignore.
         #       session,append ignore.
         # default: 30
         # default: 30
@@ -1149,19 +1144,19 @@ vhost dvr.srs.com {
         # default: on
         # default: on
         dvr_wait_keyframe       on;
         dvr_wait_keyframe       on;
         # about the stream monotonically increasing:
         # about the stream monotonically increasing:
-        #   1. video timestamp is monotonically increasing, 
+        #   1. video timestamp is monotonically increasing,
         #   2. audio timestamp is monotonically increasing,
         #   2. audio timestamp is monotonically increasing,
         #   3. video and audio timestamp is interleaved monotonically increasing.
         #   3. video and audio timestamp is interleaved monotonically increasing.
         # it's specified by RTMP specification, @see 3. Byte Order, Alignment, and Time Format
         # it's specified by RTMP specification, @see 3. Byte Order, Alignment, and Time Format
         # however, some encoder cannot provides this feature, please set this to off to ignore time jitter.
         # however, some encoder cannot provides this feature, please set this to off to ignore time jitter.
         # the time jitter algorithm:
         # the time jitter algorithm:
         #   1. full, to ensure stream start at zero, and ensure stream monotonically increasing.
         #   1. full, to ensure stream start at zero, and ensure stream monotonically increasing.
-        #   2. zero, only ensure sttream start at zero, ignore timestamp jitter.
+        #   2. zero, only ensure stream start at zero, ignore timestamp jitter.
         #   3. off, disable the time jitter algorithm, like atc.
         #   3. off, disable the time jitter algorithm, like atc.
         # apply for all dvr plan.
         # apply for all dvr plan.
         # default: full
         # default: full
         time_jitter             full;
         time_jitter             full;
-        
+
         # on_dvr, never config in here, should config in http_hooks.
         # on_dvr, never config in here, should config in http_hooks.
         # for the dvr http callback, @see http_hooks.on_dvr of vhost hooks.callback.srs.com
         # for the dvr http callback, @see http_hooks.on_dvr of vhost hooks.callback.srs.com
         # @read https://github.com/ossrs/srs/wiki/v2_CN_DVR#http-callback
         # @read https://github.com/ossrs/srs/wiki/v2_CN_DVR#http-callback
@@ -1184,15 +1179,15 @@ vhost ingest.srs.com {
         input {
         input {
             # the type of input.
             # the type of input.
             # can be file/stream/device, that is,
             # can be file/stream/device, that is,
-            #   file: ingest file specifies by url.
-            #   stream: ingest stream specifeis by url.
+            #   file: ingest file specified by url.
+            #   stream: ingest stream specified by url.
             #   device: not support yet.
             #   device: not support yet.
             # default: file
             # default: file
             type    file;
             type    file;
             # the url of file/stream.
             # the url of file/stream.
             url     ./doc/source.200kbps.768x320.flv;
             url     ./doc/source.200kbps.768x320.flv;
         }
         }
-        # the ffmpeg 
+        # the ffmpeg
         ffmpeg      ./objs/ffmpeg/bin/ffmpeg;
         ffmpeg      ./objs/ffmpeg/bin/ffmpeg;
         # the transcode engine, @see all.transcode.srs.com
         # the transcode engine, @see all.transcode.srs.com
         # @remark, the output is specified following.
         # @remark, the output is specified following.
@@ -1209,7 +1204,7 @@ vhost ingest.srs.com {
     }
     }
 }
 }
 
 
-# the vhost for intest with transcode engine.
+# the vhost for ingest with transcode engine.
 vhost transcode.ingest.srs.com {
 vhost transcode.ingest.srs.com {
     ingest livestream {
     ingest livestream {
         enabled      on;
         enabled      on;
@@ -1262,7 +1257,7 @@ vhost example.transcode.srs.com {
         # if off, donot transcode.
         # if off, donot transcode.
         # default: off.
         # default: off.
         enabled     on;
         enabled     on;
-        # the ffmpeg 
+        # the ffmpeg
         ffmpeg      ./objs/ffmpeg/bin/ffmpeg;
         ffmpeg      ./objs/ffmpeg/bin/ffmpeg;
         # the transcode engine for matched stream.
         # the transcode engine for matched stream.
         # all matched stream will transcoded to the following stream.
         # all matched stream will transcoded to the following stream.
@@ -1317,7 +1312,7 @@ vhost example.transcode.srs.com {
             # high,main,baseline
             # high,main,baseline
             vprofile        main;
             vprofile        main;
             # x264 preset, "ffmpeg -preset"
             # x264 preset, "ffmpeg -preset"
-            # @see x264 -help, can be: 
+            # @see x264 -help, can be:
             #       ultrafast,superfast,veryfast,faster,fast
             #       ultrafast,superfast,veryfast,faster,fast
             #       medium,slow,slower,veryslow,placebo
             #       medium,slow,slower,veryslow,placebo
             vpreset         medium;
             vpreset         medium;
@@ -1369,10 +1364,10 @@ vhost example.transcode.srs.com {
             oformat         flv;
             oformat         flv;
             # output stream, "ffmpeg -y", variables:
             # output stream, "ffmpeg -y", variables:
             #       [vhost] the input stream vhost.
             #       [vhost] the input stream vhost.
-            #       [port] the intput stream port.
+            #       [port] the input stream port.
             #       [app] the input stream app.
             #       [app] the input stream app.
             #       [stream] the input stream name.
             #       [stream] the input stream name.
-            #       [engine] the tanscode engine name.
+            #       [engine] the transcode engine name.
             output          rtmp://127.0.0.1:[port]/[app]?vhost=[vhost]/[stream]_[engine];
             output          rtmp://127.0.0.1:[port]/[app]?vhost=[vhost]/[stream]_[engine];
         }
         }
     }
     }
@@ -1472,7 +1467,7 @@ vhost logo.transcode.srs.com {
     }
     }
 }
 }
 # audio transcode only.
 # audio transcode only.
-# for example, FMLE publish audio codec in mp3, and donot support HLS output,
+# for example, FMLE publish audio codec in mp3, and do not support HLS output,
 # we can transcode the audio to aac and copy video to the new stream with HLS.
 # we can transcode the audio to aac and copy video to the new stream with HLS.
 vhost audio.transcode.srs.com {
 vhost audio.transcode.srs.com {
     transcode {
     transcode {
@@ -1656,7 +1651,7 @@ vhost all.transcode.srs.com {
         }
         }
     }
     }
 }
 }
-# transcode all stream using the empty ffmpeg demo, donothing.
+# transcode all stream using the empty ffmpeg demo, do nothing.
 vhost ffempty.transcode.srs.com {
 vhost ffempty.transcode.srs.com {
     transcode {
     transcode {
         enabled     on;
         enabled     on;