[FFmpeg-user] convert mkv to mp4

[Moritz Barsnick]

On Thu, Jan 30, 2025 at 12:46:22 +0100, KoSza wrote:
> I haven't got an advice for a while so I try to ask for some help again.

Again, a lot of info is missing.

> This is what I have in the mkv:
>
> VIDEO
> CODEC.......: x265 3.5+1-f0c1022b6
> BiTRATE.....: ~19.4 Mbps
> FRAME.RATE..: 23.976
> RESOLUTiON..: 3840x1920
> PARAMETERS..: Main 10/Main/L5.1/DV+HDR Profile 8.6/
> BT.2020/PQ/BT.2020nc/BT.2020
>
> AUDIO
> LANGUAGE....: Hungarian │ English
> CODEC.......: E-AC3     │ E-AC3 Atmos
> CHANNELS....: 5.1       │ 5.1
> BiTRATE.....: 640 kbps  │ 640 kbps
> SAMPLE RATE.: 48.0 kHz  │ 48.0 kHz

Since you had issues with the subtitles, why don't you show us the
subtitle info here?

Please show us the complete, uncut output from
$ ffmpeg -i infile.mkv

> What I need:
>
> MP4 with same video conten, all audio tracks inside, all subs inside.
>
> But I was not able to make a playable mp4 file with ffmpeg.

You wrote that your other tool gave you a satisfactory result. Can you
show us the complete, uncut output from
$ ffmpeg -i other_outfile.mp4

> Could you tell me the secret?
> > If I use my XMedia Recode software, it works well, but I have to use my
> > computer. I don't want to do that always.

Did you follow the recommendations regarding re-encoding the subs? What
happened there (did it convert, was it playable)?

Cheers,
Moritz