[FFmpeg-user] Encoding SRT subtitle into an MPEG-TS stream

[Matt Joiner]

I've seen several questions around regarding doing this, but nobody
seems to find a solution:

I'm transcoding arbitrary files to MPEGTS through a pipe. The subtitle
files are separate and have extension .srt.

Here's the command line I'm attempting:

ffmpeg -ss 0:3:50 -i movie.avi -i movie.srt -scodec dvbsub -target
pal-dvd pipe: | vlc -

This works just fine, with no errors, and the subtitle is listed under
the available subtitle tracks in VLC. But there are no subtitles
shown.

What is the appropriate subtitle codec to use for MPEG-TS (sending to
a Panasonic Viera TV)?

Must I separately seek the subtitle file too? (-ss)

I am using ffmpeg 0.11.1.

[Nicolas George]

Post by Matt Joiner
ffmpeg -ss 0:3:50 -i movie.avi -i movie.srt -scodec dvbsub -target
pal-dvd pipe: | vlc -
This works just fine, with no errors, and the subtitle is listed under
the available subtitle tracks in VLC. But there are no subtitles
shown.

dvbsub works with bitmap subtitles, and srt files are text subtitles.
Neither ffmpeg nor libavcodec is able to rasterize text subtitles.

I see two solutions to your problem:

If you are ok with hardcoding the subtitles in the video, you can convert
the srt file to ASS and use the ass filter: -vf ass=movie.ass

If you really want a separate sub track, you can try encoding the video to a
VOB file, then using spumux from the dvdauthor project to rasterize the srt
file and mux it into the VOB file, and then again ffmpeg to remux the result
to MPEG-TS, converting dvdsub into dvbsub. This solution is very likely to
fail for one reason or another.

Post by Matt Joiner
Must I separately seek the subtitle file too? (-ss)

Yes.

Regards,

[Tuuls]

In last version of ffmpeg , builds for windows , "ass" filter not working :(



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[Nicolas George]

Post by Tuuls
In last version of ffmpeg , builds for windows , "ass" filter not working :(

Works for mi right now in my working tree. Your bug report is not detailed
enough.
http://ffmpeg.org/bugreports.html

Regards,

[Tuuls]

most informatoins
http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=10&t=318&p=993&hilit=ass#p993



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[Nicolas George]

Post by Tuuls
most informatoins
http://ffmpeg.zeranoe.com/forum/viewtopic.php?f=10&t=318&p=993&hilit=ass#p993

I do not have windows and can not do anything with a truncated non-debug
console-output. All I can say is that it works for me.

Regards,

[Matt Joiner]

I've seen several questions around regarding doing this, but nobody
seems to find a solution:

I'm transcoding arbitrary files to MPEGTS through a pipe. The subtitle
files are separate and have extension .srt.

Here's the command line I'm attempting:

ffmpeg -ss 0:3:50 -i movie.avi -i movie.srt -scodec dvbsub -target
pal-dvd pipe: | vlc -

This works just fine, with no errors, and the subtitle is listed under
the available subtitle tracks in VLC. But there are no subtitles
shown.

What is the appropriate subtitle codec to use for MPEG-TS (sending to
a Panasonic Viera TV)?

Must I separately seek the subtitle file too? (-ss)

I am using ffmpeg 0.11.1.