Add support for bitmap based subtitles

[Petr Nejedly]

Should be able to burn them in (not as softsubs)

http://ffmpeg.org/trac/ffmpeg/wiki/How%20to%20burn%20subtitles%20into%20the%20video

http://ffmpeg-users.933282.n4.nabble.com/Converting-MPEG-TS-to-MKV-with-hard-coded-subtitles-produces-error-message-td4657313.html

http://forum.serviio.org/viewtopic.php?f=3&t=9867&p=68024#p68015

[Petr Nejedly]

this is an example of scale + overlay

d:\sample_media\video>ffmpeg -i with_psg_subs.mkv -codec:v mpeg2video -an -filter_complex "[0:v]scale=640:400[vo],[0:s]scale=640:400[so],[vo][so]overlay[v]" -sn -map [v] -y -f mpegts d:\out_sub.mpg

for scale with external subs:

ffmpeg -i with_psg_subs.mkv -codec:v mpeg2video -an -filter_complex "[0:v]scale=640:400,subtitles=filename='d\:\\sample_media\\video\\Female-Agents (2012)\\cd2\\Female.Agents.2008.DVDRip.XviD.CD2.srt'[v]" -sn -map [v] -y -f mpegts d:\out_sub.mpg

[Petr Nejedly]

Postponing until FFmpeg has proper subtitles support in libavfilter so that we don't break filters (-vf)

[Giovanni Musto]

Today I was wondering why some of my MKV files don't show subtitles and I found out that they have VOBSUB subtitles. I also discovered that Serviio first extracts the subtitle track and then burns them into the video. I read the ffmpeg documentation and I came up with a solution like the one you posted above, with the use of -filter_complex to resize the embedded subtitles and overlay them to the video, but I can't understand why you delayed this feature and what are the broken filters. I think that the support to bitmap based subtitles is crucial and should be implemented ASAP because they're the standard of the DVD format and a lot of files won't play without it.

[Former user]

I would also really appreciate this feature!

[Petr Nejedly]

http://askubuntu.com/questions/391122/how-can-i-burn-vobsub-subtitles-using-ffmpeg