[FFmpeg-user] FFmpeg unable to copy subtitles due to 'unsupported codec'?

Henk D. Schoneveld belcampo at zonnet.nl
Fri Nov 27 18:08:17 CET 2015


1st I thought I had read, my mistake, you downloaded it from YouTube but,
you said you downloaded it from iTunes, now I realise that these files are copy protected, so it ain’t possible to do what you want.

On 27 Nov 2015, at 17:03, Aahan Krish <krish at aahan.me> wrote:

> Hi Henk,
> 
>> AFAIK you should tell ffmpeg which streams you want. Not the ones to disregard.
>> And for every Stream what it should do with it.
>> To get only 0.1 and 0.2 AC3 and h264
>> ffmpeg -i file.mp4 c:v copy -c:a copy -map 0:2 -map 0:1 file-out.mp4
> 
> Like I said I need all streams (video, audio, subtitles, cover art)
> except the first audio stream. And yes I've tried the explicit
> commands too, like:
> 
>    ffmpeg -i file.mp4 -map 0:1 -map 0:2 -map 0:3 -map 0:4 -map 0:5
> -codec copy file-out.mp4
> 
>    ffmpeg -i file.mp4 -codec copy -map 0:1 -map 0:2 -map 0:3 -map 0:4
> -map 0:5 file-out.mp4
> 
>    ffmpeg -i file.mp4 -c:v copy -c:a copy -c:s copy -map 0:1 -map 0:2
> -map 0:3 -map 0:4 -map 0:5 file-out.mp4
> 
> I get the same error.
> 
> In addition to that, I noticed some other errors/warnings in the
> console output before the final error message:
> 
>    [mp4 @ 0x2645420] Codec for stream 0 does not use global headers
> but container format requires global headers
>    [mp4 @ 0x2645420] Codec for stream 1 does not use global headers
> but container format requires global headers
>    [mp4 @ 0x2645420] Codec for stream 2 does not use global headers
> but container format requires global headers
>    [mp4 @ 0x2645420] Codec for stream 3 does not use global headers
> but container format requires global headers
>    [mp4 @ 0x2645420] Codec for stream 4 does not use global headers
> but container format requires global headers
>    [mp4 @ 0x2645420] track 2: could not find tag, codec not currently
> supported in container
> 
> But then if the container doesn't support things this way, how is
> Apple able to do it? There must be a way to force ffmpeg to do what I
> want, right?
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