[FFmpeg-user] embedding subtitles missing features when apply fonts?

[Sub Phil]

> I believe SRT will allow you to set the text color.
Yes, if I encode in mkv container, instead of mp4, it does work.

> Does MP4 "streaming text format" or 3GPP TS 26.245 Timed Text allow
  any formatting?
No the foggiest idea.
Now, if I extract the srt from the output mp4, it shows that it lost all
its font formating.
In a 2nd attempt, I tried to convert from mkv to mp4, but I failed.

ffmpeg -i out.mkv -c:v copy -c:a copy -c:s srt outConverted.mp4
...
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
  Stream #0:2 -> #0:2 (subrip (srt) -> subrip (srt))
Could not write header for output file #0 (incorrect codec parameters ?):
Invalid argument

So the question being indeed:
1/ does mp4 supports it?
(As separated mp4 and srt it does).
2/ does ffmpeg implements it?


2015-05-25 21:16 GMT+02:00 Lou <lou at lrcd.com>:

> On Mon, 25 May 2015 10:35:50 -0700
> jamie <chocolate.elvis at gmail.com> wrote:
>
> > Hi, You have to use the Advanced Substation format (*.ass) to control the
> > look to that level - can't be done with just an (.srt) to the best of my
> > knowledge with the current version of ffmpeg.
>
> I believe SRT will allow you to set the text color.
>
> However, the questions here are:
>
> * Does MP4 "streaming text format" or 3GPP TS 26.245 Timed Text allow
>   any formatting?
>
> * If it is supported, does ffmpeg implement it?
>
> * If yes, does the user's player support it?
>
> I don't know the answer to any of these questions.
>
> Also, please avoid top-posing on this mailing list.
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