From below link i saw that mp4 container can have h264 as video codec and
opus as audio codec. so i tried both codecs in to mp4 using ffmpeg, but
external player like mplayer, vlc and kmp are failing to decode voice . i.e
while playing mp4 file there is only video no voice.
Procedure followed using ffmpeg:
1. From sample mp4 file, i have separated audio(aac codec) and video(h264)
in to different files .
2. aac trans-coded to opus
3. tried to merge video and audio(opus) in to single mp4
please let me know
1. whether ffmpeg support above codecs in single mp4 file or issue with
external player .
If anyone has mp4 file with h264 and opus codecs please provide me along
with procedure to convert.
Thanks & Regards
Vittal Prasad B R
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