[FFmpeg-trac] #4855(avformat:new): Support subtitles in (most likely) broken old vdr recordings
FFmpeg
trac at avcodec.org
Tue Aug 23 09:34:06 EEST 2016
#4855: Support subtitles in (most likely) broken old vdr recordings
-------------------------------------+-------------------------------------
Reporter: cehoyos | Owner:
Type: enhancement | Status: new
Priority: wish | Component: avformat
Version: git-master | Resolution:
Keywords: mpegps | Blocked By:
dvbsub dvdsub | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Description changed by cehoyos:
Old description:
> http://thread.gmane.org/gmane.comp.video.ffmpeg.user/58847
> A user uploaded a vdr recording that contains a digital television stream
> within a mpeg program stream. The recording is supposed to contain
> subtitles, possibly dvbsub, FFmpeg detects dvdsub but does not decode
> anything, just like vlc and MPlayer.
> {{{
> $ ffmpeg -i 002.vdr -filter_complex [0:0][0:3]overlay -qscale 2 -t 60
> out.avi
> ffmpeg version N-75300-g4a38078 Copyright (c) 2000-2015 the FFmpeg
> developers
> built with gcc 4.7 (SUSE Linux)
> configuration: --enable-gpl
> libavutil 55. 2.100 / 55. 2.100
> libavcodec 57. 2.100 / 57. 2.100
> libavformat 57. 2.100 / 57. 2.100
> libavdevice 57. 0.100 / 57. 0.100
> libavfilter 6. 4.100 / 6. 4.100
> libswscale 4. 0.100 / 4. 0.100
> libswresample 2. 0.100 / 2. 0.100
> libpostproc 54. 0.100 / 54. 0.100
> [mpeg @ 0x2d034e0] Format mpeg detected only with low score of 25,
> misdetection possible!
> [NULL @ 0x2d899e0] start time for stream 3 is not set in
> estimate_timings_from_pts
> Input #0, mpeg, from '002.vdr':
> Duration: 00:01:03.96, start: 47298.333311, bitrate: 2244 kb/s
> Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 704x576
> [SAR 12:11 DAR 4:3], max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
> Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 192 kb/s
> Stream #0:2[0x1c1]: Audio: mp2, 48000 Hz, mono, s16p, 64 kb/s
> Stream #0:3[0x20]: Subtitle: dvd_subtitle
> Please use -q:a or -q:v, -qscale is ambiguous
> [mpeg @ 0x2d034e0] sub2video: using 704x576 canvas
> Output #0, avi, to 'out.avi':
> Metadata:
> ISFT : Lavf57.2.100
> Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 704x576 [SAR
> 12:11 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc (default)
> Metadata:
> encoder : Lavc57.2.100 mpeg4
> Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo,
> fltp, 192 kb/s
> Metadata:
> encoder : Lavc57.2.100 ac3
> Stream mapping:
> Stream #0:0 (mpeg2video) -> overlay:main (graph 0)
> Stream #0:3 (dvdsub) -> overlay:overlay (graph 0)
> overlay (graph 0) -> Stream #0:0 (mpeg4)
> Stream #0:1 -> #0:1 (mp2 (native) -> ac3 (native))
> Press [q] to stop, [?] for help
> [mpeg2video @ 0x2d055e0] 00 motion_type at 36 29
> [mpeg2video @ 0x2d055e0] Warning MVs not available
> [mpeg2video @ 0x2d055e0] concealing 88 DC, 88 AC, 88 MV errors in P frame
> [mpeg2video @ 0x2d055e0] ac-tex damaged at 13 180:00:07.16
> bitrate=2335.5kbits/s
> [mpeg2video @ 0x2d055e0] Warning MVs not available
> [mpeg2video @ 0x2d055e0] concealing 44 DC, 44 AC, 44 MV errors in I frame
> [mpeg2video @ 0x2d055e0] ac-tex damaged at 11 900:00:13.96
> bitrate=2466.3kbits/s
> [mpeg2video @ 0x2d055e0] Warning MVs not available
> [mpeg2video @ 0x2d055e0] concealing 44 DC, 44 AC, 44 MV errors in I frame
> [mpeg2video @ 0x2d055e0] ac-tex damaged at 2 2300:00:20.68
> bitrate=2433.5kbits/s
> [mpeg2video @ 0x2d055e0] Warning MVs not available
> [mpeg2video @ 0x2d055e0] concealing 44 DC, 44 AC, 44 MV errors in P frame
> [mpeg2video @ 0x2d055e0] mb incr damagedB time=00:00:54.16
> bitrate=2345.7kbits/s
> [mpeg2video @ 0x2d055e0] 00 motion_type at 13 35
> [mpeg2video @ 0x2d055e0] Warning MVs not available
> [mpeg2video @ 0x2d055e0] concealing 88 DC, 88 AC, 88 MV errors in P frame
> frame= 1477 fps=321 q=2.0 Lsize= 17600kB time=00:01:00.00
> bitrate=2403.0kbits/s
> video:16107kB audio:1404kB subtitle:0kB other streams:0kB global
> headers:0kB muxing overhead: 0.511689%
> }}}
> No subtitles are visible in the output stream, ProjectX is able to export
> some data.
New description:
https://ffmpeg.org/pipermail/ffmpeg-user/2015-September/028406.html
A user uploaded a vdr recording that contains a digital television stream
within a mpeg program stream. The recording is supposed to contain
subtitles, possibly dvbsub, FFmpeg detects dvdsub but does not decode
anything, just like vlc and MPlayer.
{{{
$ ffmpeg -i 002.vdr -filter_complex [0:0][0:3]overlay -qscale 2 -t 60
out.avi
ffmpeg version N-75300-g4a38078 Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl
libavutil 55. 2.100 / 55. 2.100
libavcodec 57. 2.100 / 57. 2.100
libavformat 57. 2.100 / 57. 2.100
libavdevice 57. 0.100 / 57. 0.100
libavfilter 6. 4.100 / 6. 4.100
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.100 / 2. 0.100
libpostproc 54. 0.100 / 54. 0.100
[mpeg @ 0x2d034e0] Format mpeg detected only with low score of 25,
misdetection possible!
[NULL @ 0x2d899e0] start time for stream 3 is not set in
estimate_timings_from_pts
Input #0, mpeg, from '002.vdr':
Duration: 00:01:03.96, start: 47298.333311, bitrate: 2244 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 704x576
[SAR 12:11 DAR 4:3], max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 192 kb/s
Stream #0:2[0x1c1]: Audio: mp2, 48000 Hz, mono, s16p, 64 kb/s
Stream #0:3[0x20]: Subtitle: dvd_subtitle
Please use -q:a or -q:v, -qscale is ambiguous
[mpeg @ 0x2d034e0] sub2video: using 704x576 canvas
Output #0, avi, to 'out.avi':
Metadata:
ISFT : Lavf57.2.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 704x576 [SAR
12:11 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.2.100 mpeg4
Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp,
192 kb/s
Metadata:
encoder : Lavc57.2.100 ac3
Stream mapping:
Stream #0:0 (mpeg2video) -> overlay:main (graph 0)
Stream #0:3 (dvdsub) -> overlay:overlay (graph 0)
overlay (graph 0) -> Stream #0:0 (mpeg4)
Stream #0:1 -> #0:1 (mp2 (native) -> ac3 (native))
Press [q] to stop, [?] for help
[mpeg2video @ 0x2d055e0] 00 motion_type at 36 29
[mpeg2video @ 0x2d055e0] Warning MVs not available
[mpeg2video @ 0x2d055e0] concealing 88 DC, 88 AC, 88 MV errors in P frame
[mpeg2video @ 0x2d055e0] ac-tex damaged at 13 180:00:07.16
bitrate=2335.5kbits/s
[mpeg2video @ 0x2d055e0] Warning MVs not available
[mpeg2video @ 0x2d055e0] concealing 44 DC, 44 AC, 44 MV errors in I frame
[mpeg2video @ 0x2d055e0] ac-tex damaged at 11 900:00:13.96
bitrate=2466.3kbits/s
[mpeg2video @ 0x2d055e0] Warning MVs not available
[mpeg2video @ 0x2d055e0] concealing 44 DC, 44 AC, 44 MV errors in I frame
[mpeg2video @ 0x2d055e0] ac-tex damaged at 2 2300:00:20.68
bitrate=2433.5kbits/s
[mpeg2video @ 0x2d055e0] Warning MVs not available
[mpeg2video @ 0x2d055e0] concealing 44 DC, 44 AC, 44 MV errors in P frame
[mpeg2video @ 0x2d055e0] mb incr damagedB time=00:00:54.16
bitrate=2345.7kbits/s
[mpeg2video @ 0x2d055e0] 00 motion_type at 13 35
[mpeg2video @ 0x2d055e0] Warning MVs not available
[mpeg2video @ 0x2d055e0] concealing 88 DC, 88 AC, 88 MV errors in P frame
frame= 1477 fps=321 q=2.0 Lsize= 17600kB time=00:01:00.00
bitrate=2403.0kbits/s
video:16107kB audio:1404kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.511689%
}}}
No subtitles are visible in the output stream, ProjectX is able to export
some data.
--
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4855#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list