DVB Subtitles in ts file are not recognized.

[tomdouce]

Hello,

I have a ts file where the subtitles are not recognized. FFmpeg detects the correct number of streams but flags the subtitle streams as unknown.

5 MB sample provided (extracted from 2GB sample file)

% ffmpeg -i /L/dvbs_fail_sample_2.ts 2G -analyzeduration 2G /L/output.ts
ffmpeg version N-53782-g2976e2a Copyright (c) 2000-2013 the FFmpeg developers
  built on Jun  3 2013 03:43:43 with gcc 4.7.3 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
enable-libxvid --enable-zlib
  libavutil      52. 34.100 / 52. 34.100
  libavcodec     55. 14.100 / 55. 14.100
  libavformat    55.  8.102 / 55.  8.102
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 74.101 /  3. 74.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
  libpostproc    52.  3.100 / 52.  3.100
[mpegts @ 026dcd20] PES packet size mismatch
[mpegts @ 026dcd20] probed stream 2 failed
[mpegts @ 026dcd20] probed stream 3 failed
[mpegts @ 026dcd20] probed stream 4 failed
[mpegts @ 026dcd20] probed stream 5 failed
[mpegts @ 026dcd20] probed stream 6 failed
[mpegts @ 026dcd20] probed stream 7 failed
[mpegts @ 026dcd20] Could not find codec parameters for stream 2 (Unknown: none)
: unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 026dcd20] Could not find codec parameters for stream 3 (Unknown: none)
: unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 026dcd20] Could not find codec parameters for stream 4 (Unknown: none)
: unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 026dcd20] Could not find codec parameters for stream 5 (Unknown: none)
: unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 026dcd20] Could not find codec parameters for stream 6 (Unknown: none)
: unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 026dcd20] Could not find codec parameters for stream 7 (Unknown: none)
: unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[mpegts @ 026dcd20] PES packet size mismatch
Input #0, mpegts, from 'l:/StreamIt/sub/dvbs_fail_sample_2.ts':
  Duration: 00:00:02.02, start: 8380.125011, bitrate: 20061 kb/s
  Program 1
    Metadata:
      service_name    : MET0P 16/02/13 ENC1 INTL
      service_provider: All Mobile Video
  No Program
    Stream #0:0[0x100]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
    Stream #0:1[0x134]: Video: mpeg2video (Main), yuv420p, 1920x1080 [SAR 1:1 DA
R 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:2[0x400]: Unknown: none
    Stream #0:3[0x404]: Unknown: none
    Stream #0:4[0x402]: Unknown: none
    Stream #0:5[0x401]: Unknown: none
    Stream #0:6[0x403]: Unknown: none
    Stream #0:7[0x405]: Unknown: none
File 'l:/toto.ts' already exists. Overwrite ? [y/N]

[tomdouce]

Download sample here: ​http://www1.datafilehost.com/d/fcc3c6f7
(zip file 8 MB)

[Clément Bœsch]

This is possibly a duplicate, or at least related to #153, #2024, #2223 or #2161

[tomdouce]

Note: Subtitle are working correctly using VLC 1.1.4 and VLC 2.0.6

[Carl Eugen Hoyos]

Replying to ubitux:

This is possibly a duplicate, or at least related to #153, #2024, #2223 or #2161

Could you elaborate?

[Clément Bœsch]

Replying to cehoyos:

Replying to ubitux:

This is possibly a duplicate, or at least related to #153, #2024, #2223 or #2161

Could you elaborate?

Brainfart I suppose, I missed the main issue here. Feel free to ignore. Sorry.

[tomdouce]

The modified version of mpegts.c from xbmc project seems to solve the issue but I don't know which part is important:

​https://raw.github.com/xbmc/xbmc/master/lib/ffmpeg/libavformat/mpegts.c

[Carl Eugen Hoyos]

How can I reproduce playing the subtitles with vlc? Nothing is shown here, but I probably miss how to enable subtitles in vlc from the command line.

[tomdouce]

Hello,

It is possible that the sample I provided does not have any subtitle to display. The main issue is that the dvbs subtitle streams are not recognized (streams detected but codec is 'none'). Mpegts.c from xbmc project fixes this issue but I don't know which part of the source code is important.

[Carl Eugen Hoyos]

Then please provide a sample that allows to reproduce the problem, that is a sample that shows subtitles with another application but not ffplay / ffmpeg.

[tomdouce]

Cehoyos,

Did you read my last messages? Just open it with VLC and open Media Information window then you will see that the streams marked as unknown by FFmpeg are properly detected as dvb subtitles.
Anyway I will post a new sample.

[tomdouce]

Here is a new link: ​http://www1.datafilehost.com/d/b3d4ff23
Subtitles appear at the end of the playback.

[Carl Eugen Hoyos]

Regression since b795ff9

[Michael Niedermayer]

Fixed in b009267910df10c004b5f340a090d45da29089a0