[FFmpeg-user] convert mkv to mp4

[Moritz Barsnick]

On Fri, Jan 10, 2025 at 11:13:06 +0100, KoSza wrote:
> I have ffmpeg on my Synology DS423+, if I use the following command
> ffmpeg -i movie.mkv -codec copy movie.mp4
> The file is done, but TV does not play it.

Then you're probably out of luck, because the TV doesn't support one of
the codecs.

> If I try
> ffmpeg -i movie.mkv -map 0 -c copy movie.mp4
> I got an error.

Is this error a secret? Shall we guess?

Please provide us the complete, uncut console output of that command.
Then we might be able to help, and you would also see which codecs are
involved.

> What is the right process to changing only the container and keep
> everything unchanged?

You may have to recode your streams for your TV to accepts them. But
ffmpeg can of course do this as well, just not as fast as copying.

Cheers,
Moritz