I am using ffmpeg to convert my video files to flv.
My issue is that I want the converted flv files to have
audioCodecId = 2, because, I am injecting keyframes in the converted file and using it for progressive streaming.
But when I try the progressive streaming using file with
videoCodecId = 7 and
auddioCodecId = 10, I am unable to make the file run properly. (maybe I am doing something wrong here as well)
I tried to convert a same file two ways:
videoCodecId = 7and
audioCodecId = 10I used the following commandline to do so:
/usr/local/bin/ffmpeg -i %s -map_meta_data 0:0 -acodec libfaac -ab 96k -ar 44100 -vcodec libx264 -vpre hq -crf 20 -threads 0 -f flv %s
Other way keeps the
videoCodecId = 2and
audioCodecId = 2(which is desired), but it effects highly on the video quality.
/usr/local/bin/ffmpeg -i %s -map_meta_data 0:0 -ab 96k -ar 44100 -crf 20 -f flv %s
So, both ways can help me solve my issue, first if I can improve the quality of my video after converting using the second method, or, I could make the progressive streaming work for files with
videoCodecId = 7.
But I read in a few articles that even youtube uses video with
videoCodecId = 2 and
audioCodecId = 2. So probably, there is a reason they do it too.
But if I download a file from youtube, and see its codec information using VLCplayer, it says the video codec - h264 and audio as mp4a which is 7 and 10 respectively (I guess)
I am very confused in this right now. And have been trying to figure this out since a few days now.
Any help, or suggestion is appreciated.