[FFmpeg-user] What happens when the input codec is the same as the output codec?

Felix Fung f at vine.co
Sun Jul 6 06:26:34 CEST 2014

In relation to both video and audio streams, I'm wondering what the
behaviour is when the output codec is specified (e.g. -vcodec libx264) but
is the same as the inputted video? Will there be a decode and re-encode or
will it behave the same as -vcodec copy?


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