Opened 7 years ago

Last modified 7 years ago

#5124 new defect

Vobsub subtitles not burning with a certain file

Reported by: Rapper_skull Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: dvdsub
Cc: Michael Niedermayer Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug: When I try to overlay VOBSUB subtitles on the video of my MKV file, they does not appear. If I use a generated black solid background as the overlay main, they show.
How to reproduce:

% ffmpeg -threads auto -i /media/rapperskull/Volume/vobsub_not_burning.mkv -y -c:v mpeg2video -pix_fmt yuv420p -qscale:v 1 -filter_complex [0:0][0:2]overlay[v] -g 15 -c:a ac3 -b:a 192k -ac 2 -map [v] -map 0:1 -sn -f mpegts /media/rapperskull/Volume/vobsub_not_burning.ts
ffmpeg version 2.7.3-0ubuntu0.15.10.1 Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 5.2.1 (Ubuntu 5.2.1-22ubuntu2) 20151010
  configuration: --prefix=/usr --extra-version=0ubuntu0.15.10.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-frei0r --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-openal --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libxvid --enable-libzvbi --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-libssh --enable-libsoxr --enable-libx264 --enable-libopencv --enable-libx265
  libavutil      54. 27.100 / 54. 27.100
  libavcodec     56. 41.100 / 56. 41.100
  libavformat    56. 36.100 / 56. 36.100
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 16.101 /  5. 16.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.100 /  1.  2.100
  libpostproc    53.  3.100 / 53.  3.100
Input #0, matroska,webm, from '/media/rapperskull/Volume/vobsub_not_burning.mkv':
  Metadata:
    ENCODER         : Lavf56.36.100
  Duration: 00:00:07.47, start: 0.000000, bitrate: 11124 kb/s
    Chapter #0:0: start 0.000000, end 7.450000
    Metadata:
      title           : Opening Titles
    Stream #0:0(ita): Video: h264 (High), yuv420p, 1920x800 [SAR 1:1 DAR 12:5], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Metadata:
      title           : The Hitchhiker's Guide to the Galaxy - Sample
      LANGUAGE        : ita
      BPS             : 20041526
      BPS-eng         : 20041526
      DURATION        : 00:00:19.102000000
      DURATION-eng    : 00:00:19.102000000
      NUMBER_OF_FRAMES: 458
      NUMBER_OF_FRAMES-eng: 458
      NUMBER_OF_BYTES : 47854155
      NUMBER_OF_BYTES-eng: 47854155
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      ENCODER         : Lavc56.41.100 libx264
    Stream #0:1(ita): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      title           : Ita Ac3 5.1
      LANGUAGE        : ita
      BPS             : 640000
      BPS-eng         : 640000
      DURATION        : 00:00:19.104000000
      DURATION-eng    : 00:00:19.104000000
      NUMBER_OF_FRAMES: 597
      NUMBER_OF_FRAMES-eng: 597
      NUMBER_OF_BYTES : 1528320
      NUMBER_OF_BYTES-eng: 1528320
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      ENCODER         : Lavc56.41.100 ac3
    Stream #0:2(ita): Subtitle: dvd_subtitle, 1920x1080 (default)
    Metadata:
      title           : Sub Ita Forced
      LANGUAGE        : ita
      BPS             : 4601
      BPS-eng         : 4601
      DURATION        : 00:00:05.313000000
      DURATION-eng    : 00:00:05.313000000
      NUMBER_OF_FRAMES: 1
      NUMBER_OF_FRAMES-eng: 1
      NUMBER_OF_BYTES : 3056
      NUMBER_OF_BYTES-eng: 3056
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Output #0, mpegts, to '/media/rapperskull/Volume/vobsub_not_burning.ts':
  Metadata:
    encoder         : Lavf56.36.100
    Chapter #0:0: start 0.000000, end 7.450000
    Metadata:
      title           : Opening Titles
    Stream #0:0: Video: mpeg2video, yuv420p, 1920x800 [SAR 1:1 DAR 12:5], q=2-31, 200 kb/s, 23.98 fps, 90k tbn, 23.98 tbc (default)
    Metadata:
      encoder         : Lavc56.41.100 mpeg2video
    Stream #0:1(ita): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      title           : Ita Ac3 5.1
      LANGUAGE        : ita
      BPS             : 640000
      BPS-eng         : 640000
      DURATION        : 00:00:19.104000000
      DURATION-eng    : 00:00:19.104000000
      NUMBER_OF_FRAMES: 597
      NUMBER_OF_FRAMES-eng: 597
      NUMBER_OF_BYTES : 1528320
      NUMBER_OF_BYTES-eng: 1528320
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      encoder         : Lavc56.41.100 ac3
Stream mapping:
  Stream #0:0 (h264) -> overlay:main (graph 0)
  Stream #0:2 (dvdsub) -> overlay:overlay (graph 0)
  overlay (graph 0) -> Stream #0:0 (mpeg2video)
  Stream #0:1 -> #0:1 (ac3 (native) -> ac3 (native))
Press [q] to stop, [?] for help
frame=   10 fps=0.0 q=1.0 size=    2218kB time=00:00:00.50 bitrate=35861.5kbits/frame=   27 fps= 26 q=1.0 size=    6687kB time=00:00:01.17 bitrate=46475.1kbits/frame=   42 fps= 27 q=1.0 size=   10829kB time=00:00:01.85 bitrate=47936.7kbits/frame=   57 fps= 27 q=1.0 size=   15095kB time=00:00:02.49 bitrate=49648.3kbits/frame=   73 fps= 28 q=1.0 size=   19657kB time=00:00:03.13 bitrate=51435.4kbits/frame=   88 fps= 28 q=1.0 size=   23964kB time=00:00:03.77 bitrate=52063.5kbits/frame=  103 fps= 29 q=1.0 size=   28332kB time=00:00:04.37 bitrate=53005.7kbits/frame=  118 fps= 29 q=1.0 size=   32718kB time=00:00:05.01 bitrate=53405.3kbits/frame=  133 fps= 29 q=1.0 size=   37053kB time=00:00:05.62 bitrate=53946.2kbits/frame=  148 fps= 29 q=1.0 size=   41395kB time=00:00:06.26 bitrate=54112.8kbits/frame=  160 fps= 28 q=1.0 size=   44848kB time=00:00:06.71 bitrate=54714.7kbits/frame=  174 fps= 28 q=1.0 size=   48890kB time=00:00:07.35 bitrate=54456.7kbits/frame=  179 fps= 28 q=1.0 Lsize=   50639kB time=00:00:07.45 bitrate=55677.5kbits/s    
video:46775kB audio:175kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.858891%

Change History (9)

comment:1 by Rapper_skull, 7 years ago

I'm tying to upload the sample (10 MB) to the FTP, but I always get 421 Too many connections (1) from this IP as response.

comment:2 by Clément Bœsch, 7 years ago

ffmpeg version 2.7.3-0ubuntu0.15.10.1

Please try with git/master first.

Also, is this specific to these DVD subs?

in reply to:  2 comment:3 by Rapper_skull, 7 years ago

Replying to ubitux:

ffmpeg version 2.7.3-0ubuntu0.15.10.1

Please try with git/master first.

Also, is this specific to these DVD subs?

I'm now compiling ffmpeg and I'll let you know. In the meanwhile, can you test if the problem happens also to you? I uploaded the sample to MEGA, since the FTP aborted the transfer twice due to timeout.
​https://mega.nz/#!hgNlWB7S!YJZAj_RG82fPm1V2iCb0FwXgHjHlTewLJB9uUSlyzQA

comment:4 by Rapper_skull, 7 years ago

Version: 2.7.3 → git-master

Also tested with newly compiled ffmpeg:

ffmpeg -threads auto -i /media/rapperskull/Volume/vobsub_not_burning.mkv -y -c:v mpeg2video -pix_fmt yuv420p -qscale:v 1 -filter_complex [0:0][0:2]overlay[v] -g 15 -c:a ac3 -b:a 192k -ac 2 -map [v] -map 0:1 -sn -f mpegts /media/rapperskull/Volume/vobsub_not_burning.ts
ffmpeg version N-77710-g5b4da8a Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.2.1 (Ubuntu 5.2.1-22ubuntu2) 20151010
  configuration: --prefix=/home/rapperskull/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/rapperskull/ffmpeg_build/include --extra-ldflags=-L/home/rapperskull/ffmpeg_build/lib --bindir=/home/rapperskull/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  libavutil      55. 12.100 / 55. 12.100
  libavcodec     57. 21.100 / 57. 21.100
  libavformat    57. 21.100 / 57. 21.100
  libavdevice    57.  0.100 / 57.  0.100
  libavfilter     6. 23.100 /  6. 23.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
Input #0, matroska,webm, from '/media/rapperskull/Volume/vobsub_not_burning.mkv':
  Metadata:
    ENCODER         : Lavf56.36.100
  Duration: 00:00:07.47, start: 0.000000, bitrate: 11124 kb/s
    Chapter #0:0: start 0.000000, end 7.450000
    Metadata:
      title           : Opening Titles
    Stream #0:0(ita): Video: h264 (High), yuv420p, 1920x800 [SAR 1:1 DAR 12:5], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Metadata:
      title           : The Hitchhiker's Guide to the Galaxy - Sample
      LANGUAGE        : ita
      BPS             : 20041526
      BPS-eng         : 20041526
      DURATION        : 00:00:19.102000000
      DURATION-eng    : 00:00:19.102000000
      NUMBER_OF_FRAMES: 458
      NUMBER_OF_FRAMES-eng: 458
      NUMBER_OF_BYTES : 47854155
      NUMBER_OF_BYTES-eng: 47854155
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      ENCODER         : Lavc56.41.100 libx264
    Stream #0:1(ita): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      title           : Ita Ac3 5.1
      LANGUAGE        : ita
      BPS             : 640000
      BPS-eng         : 640000
      DURATION        : 00:00:19.104000000
      DURATION-eng    : 00:00:19.104000000
      NUMBER_OF_FRAMES: 597
      NUMBER_OF_FRAMES-eng: 597
      NUMBER_OF_BYTES : 1528320
      NUMBER_OF_BYTES-eng: 1528320
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      ENCODER         : Lavc56.41.100 ac3
    Stream #0:2(ita): Subtitle: dvd_subtitle, 1920x1080 (default)
    Metadata:
      title           : Sub Ita Forced
      LANGUAGE        : ita
      BPS             : 4601
      BPS-eng         : 4601
      DURATION        : 00:00:05.313000000
      DURATION-eng    : 00:00:05.313000000
      NUMBER_OF_FRAMES: 1
      NUMBER_OF_FRAMES-eng: 1
      NUMBER_OF_BYTES : 3056
      NUMBER_OF_BYTES-eng: 3056
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Output #0, mpegts, to '/media/rapperskull/Volume/vobsub_not_burning.ts':
  Metadata:
    encoder         : Lavf57.21.100
    Chapter #0:0: start 0.000000, end 7.450000
    Metadata:
      title           : Opening Titles
    Stream #0:0: Video: mpeg2video (Main), yuv420p, 1920x800 [SAR 1:1 DAR 12:5], q=2-31, 200 kb/s, 23.98 fps, 90k tbn, 23.98 tbc (default)
    Metadata:
      encoder         : Lavc57.21.100 mpeg2video
    Side data:
      unknown side data type 10 (24 bytes)
    Stream #0:1(ita): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      title           : Ita Ac3 5.1
      LANGUAGE        : ita
      BPS             : 640000
      BPS-eng         : 640000
      DURATION        : 00:00:19.104000000
      DURATION-eng    : 00:00:19.104000000
      NUMBER_OF_FRAMES: 597
      NUMBER_OF_FRAMES-eng: 597
      NUMBER_OF_BYTES : 1528320
      NUMBER_OF_BYTES-eng: 1528320
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      encoder         : Lavc57.21.100 ac3
Stream mapping:
  Stream #0:0 (h264) -> overlay:main (graph 0)
  Stream #0:2 (dvdsub) -> overlay:overlay (graph 0)
  overlay (graph 0) -> Stream #0:0 (mpeg2video)
  Stream #0:1 -> #0:1 (ac3 (native) -> ac3 (native))
Press [q] to stop, [?] for help
frame=   11 fps=0.0 q=1.0 size=    2470kB time=00:00:00.57 bitrate=35463.5kbits/frame=   27 fps= 26 q=1.0 size=    6687kB time=00:00:01.17 bitrate=46475.1kbits/frame=   42 fps= 27 q=1.0 size=   10829kB time=00:00:01.85 bitrate=47936.7kbits/frame=   56 fps= 27 q=1.0 size=   14805kB time=00:00:02.42 bitrate=49980.3kbits/frame=   71 fps= 27 q=1.0 size=   19097kB time=00:00:03.03 bitrate=51551.5kbits/frame=   86 fps= 28 q=1.0 size=   23384kB time=00:00:03.67 bitrate=52129.9kbits/frame=  101 fps= 28 q=1.0 size=   27744kB time=00:00:04.31 bitrate=52675.4kbits/frame=  116 fps= 28 q=1.0 size=   32149kB time=00:00:04.92 bitrate=53499.9kbits/frame=  131 fps= 28 q=1.0 size=   36466kB time=00:00:05.56 bitrate=53701.9kbits/frame=  146 fps= 28 q=1.0 size=   40838kB time=00:00:06.17 bitrate=54215.4kbits/frame=  161 fps= 28 q=1.0 size=   45129kB time=00:00:06.81 bitrate=54281.6kbits/frame=  177 fps= 29 q=1.0 size=   49760kB time=00:00:07.45 bitrate=54711.2kbits/frame=  179 fps= 29 q=1.0 Lsize=   50639kB time=00:00:07.45 bitrate=55677.5kbits/s speed=1.19x    
video:46775kB audio:175kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.858891%

comment:5 by Rapper_skull, 7 years ago

The sample file also successfully uploaded to the FTP under the name vobsub_not_burning_attempt3.mkv

in reply to:  4 comment:6 by Carl Eugen Hoyos, 7 years ago

Replying to Rapper_skull:

    Stream #0:0(ita): Video: h264 (High), yuv420p, 1920x800 [SAR 1:1 DAR 12:5], 23.98 fps, 23.98 

    Stream #0:2(ita): Subtitle: dvd_subtitle, 1920x1080 (default)

Needs -canvas_size 1920x800

comment:7 by Carl Eugen Hoyos, 7 years ago

Cc: Michael Niedermayer added
Keywords: dvdsub added

The subtitles are bigger than the screen, they are overlayed with your original command but are invisible.

I don't know if it is a bug that FFplay and FFmpeg behave differently: Michael, could you comment?

comment:8 by Rapper_skull, 7 years ago

Solved the problem scaling the subtitles first:

ffmpeg -threads auto -i /media/rapperskull/Volume/vobsub_not_burning.mkv -y -c:v mpeg2video -pix_fmt yuv420p -qscale:v 1 -filter_complex '[0:2]scale=1920x800[sub];[0:0][sub]overlay[v]' -g 15 -c:a ac3 -b:a 192k -ac 2 -map [v] -map 0:1 -sn -f mpegts /media/rapperskull/Volume/vobsub_not_burning.ts
ffmpeg version N-77710-g5b4da8a Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 5.2.1 (Ubuntu 5.2.1-22ubuntu2) 20151010
  configuration: --prefix=/home/rapperskull/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/rapperskull/ffmpeg_build/include --extra-ldflags=-L/home/rapperskull/ffmpeg_build/lib --bindir=/home/rapperskull/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  libavutil      55. 12.100 / 55. 12.100
  libavcodec     57. 21.100 / 57. 21.100
  libavformat    57. 21.100 / 57. 21.100
  libavdevice    57.  0.100 / 57.  0.100
  libavfilter     6. 23.100 /  6. 23.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
Input #0, matroska,webm, from '/media/rapperskull/Volume/vobsub_not_burning.mkv':
  Metadata:
    ENCODER         : Lavf56.36.100
  Duration: 00:00:07.47, start: 0.000000, bitrate: 11124 kb/s
    Chapter #0:0: start 0.000000, end 7.450000
    Metadata:
      title           : Opening Titles
    Stream #0:0(ita): Video: h264 (High), yuv420p, 1920x800 [SAR 1:1 DAR 12:5], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Metadata:
      title           : The Hitchhiker's Guide to the Galaxy - Sample
      LANGUAGE        : ita
      BPS             : 20041526
      BPS-eng         : 20041526
      DURATION        : 00:00:19.102000000
      DURATION-eng    : 00:00:19.102000000
      NUMBER_OF_FRAMES: 458
      NUMBER_OF_FRAMES-eng: 458
      NUMBER_OF_BYTES : 47854155
      NUMBER_OF_BYTES-eng: 47854155
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      ENCODER         : Lavc56.41.100 libx264
    Stream #0:1(ita): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      title           : Ita Ac3 5.1
      LANGUAGE        : ita
      BPS             : 640000
      BPS-eng         : 640000
      DURATION        : 00:00:19.104000000
      DURATION-eng    : 00:00:19.104000000
      NUMBER_OF_FRAMES: 597
      NUMBER_OF_FRAMES-eng: 597
      NUMBER_OF_BYTES : 1528320
      NUMBER_OF_BYTES-eng: 1528320
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      ENCODER         : Lavc56.41.100 ac3
    Stream #0:2(ita): Subtitle: dvd_subtitle, 1920x1080 (default)
    Metadata:
      title           : Sub Ita Forced
      LANGUAGE        : ita
      BPS             : 4601
      BPS-eng         : 4601
      DURATION        : 00:00:05.313000000
      DURATION-eng    : 00:00:05.313000000
      NUMBER_OF_FRAMES: 1
      NUMBER_OF_FRAMES-eng: 1
      NUMBER_OF_BYTES : 3056
      NUMBER_OF_BYTES-eng: 3056
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
Output #0, mpegts, to '/media/rapperskull/Volume/vobsub_not_burning.ts':
  Metadata:
    encoder         : Lavf57.21.100
    Chapter #0:0: start 0.000000, end 7.450000
    Metadata:
      title           : Opening Titles
    Stream #0:0: Video: mpeg2video (Main), yuv420p, 1920x800 [SAR 1:1 DAR 12:5], q=2-31, 200 kb/s, 23.98 fps, 90k tbn, 23.98 tbc (default)
    Metadata:
      encoder         : Lavc57.21.100 mpeg2video
    Side data:
      unknown side data type 10 (24 bytes)
    Stream #0:1(ita): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s (default)
    Metadata:
      title           : Ita Ac3 5.1
      LANGUAGE        : ita
      BPS             : 640000
      BPS-eng         : 640000
      DURATION        : 00:00:19.104000000
      DURATION-eng    : 00:00:19.104000000
      NUMBER_OF_FRAMES: 597
      NUMBER_OF_FRAMES-eng: 597
      NUMBER_OF_BYTES : 1528320
      NUMBER_OF_BYTES-eng: 1528320
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 23:04:15
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 23:04:15
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      encoder         : Lavc57.21.100 ac3
Stream mapping:
  Stream #0:0 (h264) -> overlay:main (graph 0)
  Stream #0:2 (dvdsub) -> scale (graph 0)
  overlay (graph 0) -> Stream #0:0 (mpeg2video)
  Stream #0:1 -> #0:1 (ac3 (native) -> ac3 (native))
Press [q] to stop, [?] for help
frame=    7 fps=0.0 q=1.0 size=    1440kB time=00:00:00.37 bitrate=31159.0kbits/frame=   16 fps= 15 q=1.0 size=    3754kB time=00:00:00.76 bitrate=40326.0kbits/frame=   25 fps= 16 q=1.0 size=    6135kB time=00:00:01.14 bitrate=43828.0kbits/frame=   38 fps= 18 q=1.0 size=    9689kB time=00:00:01.69 bitrate=46945.4kbits/frame=   53 fps= 20 q=1.0 size=   13980kB time=00:00:02.29 bitrate=49822.4kbits/frame=   68 fps= 22 q=1.0 size=   18349kB time=00:00:02.93 bitrate=51150.5kbits/frame=   84 fps= 23 q=1.0 size=   22971kB time=00:00:03.61 bitrate=52117.1kbits/frame=  100 fps= 24 q=1.0 size=   27689kB time=00:00:04.21 bitrate=53766.8kbits/frame=  114 fps= 24 q=1.0 size=   31854kB time=00:00:04.85 bitrate=53708.5kbits/frame=  128 fps= 25 q=1.0 size=   35934kB time=00:00:05.43 bitrate=54165.0kbits/frame=  143 fps= 25 q=1.0 size=   40363kB time=00:00:06.04 bitrate=54719.4kbits/frame=  158 fps= 25 q=1.0 size=   44717kB time=00:00:06.68 bitrate=54816.5kbits/frame=  173 fps= 26 q=1.0 size=   49096kB time=00:00:07.29 bitrate=55165.1kbits/frame=  179 fps= 26 q=1.0 Lsize=   51145kB time=00:00:07.45 bitrate=56234.1kbits/s speed=1.08x    
video:47244kB audio:175kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 7.857729%

I don't know if it should still considered a bug or not.

comment:9 by Rapper_skull, 7 years ago

I can confirm also -canvas_size works.

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