I'm new to ffmpeg
and I was trying to find out how to convert a audio or video file from one format to another. I don't want to use CLI
, I just want to know if I can use ffmpeg
as a library and call a function to convert a file from one format to another. I went through the documentation and found functions avcodec_encode_audio
and avcodec_encode_video
but its not clear how I can use this to convert. A tutorial or an example will be very helpful.
usually i do this by command line
ffmpeg -i input.mp4 -vcodec copy -acodec copy out.mkv
here i/p file is input.mp4 which will be converted into out.mkv with having same codec of all elementary stream
NOTE: upper command will only work when the input.mp4 's all codec will be supported by .mkv container.
and if you are not concern with codec then use
ffmpeg -i input.mp4 out.mkv
this will convert mp4 to mkv (if necessary it will also change codec of output format)