Opened 9 years ago
- Example to stream copy all of the video and audio streams, convert the all text based subtitle input streams (SRT, ASS, VTT, etc) to the streaming text format, and set the language for the first two subtitle streams. Ffmpeg -i input.mkv -map 0 -c copy -c:s movtext -metadata:s:s:0 language=eng -metadata:s:s:1 language=ipk output.mp4.
- Does any body know how to extract subtitles from a dvd or a vob file with ffmpeg? I could get fine working.sub and.idx files via mencoder command: mencoder dvd://1 -vobsubout subtitle -vobsuboutindex 0 -vobsuboutid it -sid 10 -nosound -ovc copy -o 1.avi but i get a huge temporary file (1.avi) witch is the entire video stream.
In the meantime, I suppose you know you can use mkvextract to extract the subtitles tracks. For me reading srt files works fine. I tried something like 'ffmpeg -i subs.srt subs.ass' and it works. I only have problems with writting ass subtitles to mkv files, but it is separate and more complicated issue.
Closed 8 years ago
Last modified 7 years ago
#862closeddefect (fixed)
| Reported by: | Owned by: | ||
|---|---|---|---|
| Priority: | normal | Component: | ffmpeg |
| Version: | git-master | Keywords: | |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | no |
Attachments (4)
- SRT-in-MKV-support.patch (1.7 KB) - added by 9 years ago.
- Add timecodes to srt subtitles exported from matroska.
- ffmpeg.verbose.log (2.5 KB) - added by 9 years ago.
- Output of 'ffmpeg -loglevel verbose -scodec srt -i source.mkv -y target.srt'
- target.srt (192 bytes) - added by 9 years ago.
- Expected output(subtitles with timecodes).
- source.mkv (266.1 KB) - added by 9 years ago.
- Sample source file. Contains video audio and srt subtitle track.
Download all attachments as: .zip
Change History (11)
by , 9 years ago
comment:1 by , 9 years ago
by , 9 years ago
by , 9 years ago
by , 9 years ago
comment:2 by , 9 years ago
Ffmpeg Subtitle Stream
follow-ups: 4 5comment:3 by , 9 years ago
| Component: | avformat → FFmpeg |
|---|---|
| Keywords: | text subtitles added; srt matroska mkv removed |
| Reproduced by developer: | set |
| Status: | new → open |
in reply to: 3comment:4 by , 9 years ago
in reply to: 3comment:5 by , 9 years ago
comment:6 by , 8 years ago
comment:7 by , 7 years ago
by , 9 years ago
by , 9 years ago
comment:2 by , 9 years ago
Ffmpeg Subtitle Stream
follow-ups: 4 5comment:3 by , 9 years ago
| Component: | avformat → FFmpeg |
|---|---|
| Keywords: | text subtitles added; srt matroska mkv removed |
| Reproduced by developer: | set |
| Status: | new → open |
in reply to: 3comment:4 by , 9 years ago
in reply to: 3comment:5 by , 9 years ago
comment:6 by , 8 years ago
comment:7 by , 7 years ago
| '' |
| This python script encodes all files that have the extension mkv in the current |
| working directory. |
| Sources: |
| http://ffmpeg.org/trac/ffmpeg/wiki/x264EncodingGuide |
| '' |
| importsubprocess, os |
| #------------------------------------------------------------------------------- |
| # CONFIGURABLE SETTINGS |
| #------------------------------------------------------------------------------- |
| # controls the quality of the encode |
| CRF_VALUE='21' |
| # h.264 profile |
| PROFILE='high' |
| # encoding speed:compression ratio |
| PRESET='fast' |
| # path to ffmpeg bin |
| FFMPEG_PATH='/usr/local/bin/ffmpeg' |
| # font dir |
| FONT_DIR='/var/www/.fonts' |
| #------------------------------------------------------------------------------- |
| # encoding script |
| #------------------------------------------------------------------------------- |
| defprocess(): |
| cwd=os.getcwd() |
| # get a list of files that have the extension mkv |
| filelist=filter(lambdaf: f.split('.')[-1] 'mkv', os.listdir(cwd)) |
| filelist=sorted(filelist) |
| # encode each file |
| forfileinfilelist: |
| encode(file) |
| defencode(file): |
| name='.join(file.split('.')[:-1]) |
| subtitles='temp.ass'.format(name) |
| output='{}.mp4'.format(name) |
| try: |
| command= [ |
| FFMPEG_PATH, '-i', file, |
| '-c:v', 'libx264', '-tune', 'animation', '-preset', PRESET, '-profile:v', PROFILE, '-crf', CRF_VALUE, |
| ] |
| # create a folder called attachments and symlink it to FONT_DIR |
| # extract attachments |
| subprocess.call(['mkdir', 'attachments']) |
| subprocess.call(['rm', '-f', FONT_DIR]) |
| subprocess.call(['ln', '-s', '{}/attachments'.format(os.getcwd()), FONT_DIR]) |
| os.chdir('attachments') |
| subprocess.call([FFMPEG_PATH, '-dump_attachment:t', ', '-i', '../{}'.format(file)]) |
| os.chdir('..') |
| # extract ass subtitles and and subtitle into command |
| subprocess.call([FFMPEG_PATH, '-i', file, subtitles]) |
| ifos.path.getsize(subtitles) >0: |
| command+= ['-vf', 'ass={}'.format(subtitles)] |
| command+= ['-c:a', 'copy'] # if audio is using AAC copy it - else encode it |
| command+= ['-threads', '8', output] # add threads and output |
| subprocess.call(command) # encode the video! |
| finally: |
| # always cleanup even if there are errors |
| subprocess.call(['rm', '-fr', 'attachments']) |
| subprocess.call(['rm', '-f', FONT_DIR]) |
| subprocess.call(['rm', '-f', subtitles]) |
| if__name__'__main__': |
| process() |
commented Mar 26, 2020
Thanks for the script. Can it be modified to look for a keyword string in the first part of the file name? I want to decode only files that have 'x265' in the name (e.g. 'The.Invisible.Man.x265.DD5.1.mkv'). I assume the modification would center around this line in the script: I looked on the web and couldn't find much, and trial and error resulted in only errors. Any help you can offer would be appreciated! |
commented Aug 10, 2020•
Ffmpeg Extract Srt
for future reference, this would be filter(lambda f: 'x265' in f and f.split('.')[-1] 'mkv', os.listdir(cwd)) |
Ffmpeg Extract Subtitle From Mkv
