胡斌 / merge_av_release

source commit 04e7b37e25293bed35580b11be0c6b5293129487

get the correct duration of mp4 files

using the name exclude extended name of first audio or video as the name for the output ts file

read recordinfo.txt,transcode ,and save recordinfo_out.txt
in previous version,all the audio an video are merged to one ts,
in this version,there are maybe serveral ts,if the video file or audio file is not continuous

support 1 video mixing with multi-segments audio file

support the record file only have video

1.using the video duration parsed from video file
2.make compatiable with the recording file with the start time not being zero
3.merge with blank jpg for the last segment audio without video
4.adjust video codec param ,using cfr, 20fps,gop 100

git@123.56.226.173:hubin/merge_av.git
commit 6a66277676bf4e32b7866bd736ca02bd34d527fc