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TeleText in ffmpeg

Discussions about problems encountered using ffprobe.
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TeleText in ffmpeg

Postby vixen_heart » Fri Apr 18, 2014 11:41 am

Hello,

i try to extract dvb_teletext as *.srt file. :(

When i display the stream information with ffprobe it give me at the end the following error "Unsupported codec with id 94215 for input stream 4"
Any one could help me

the stream info are


Code: Select all
 ffprobe -i problem1.ts

    ffprobe version N-62493-g443261c Copyright (c) 2007-2014 the FFmpeg developers
    built on Apr 17 2014 12:50:30 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
    configuration: --disable-yasm
    libavutil 52. 76.100 / 52. 76.100
    libavcodec 55. 58.103 / 55. 58.103
    libavformat 55. 37.100 / 55. 37.100
    libavdevice 55. 13.100 / 55. 13.100
    libavfilter 4. 4.100 / 4. 4.100
    libswscale 2. 6.100 / 2. 6.100
    libswresample 0. 18.100 / 0. 18.100
    [mpeg2video @ 0x1c979c0] Invalid frame dimensions 0x0.
    [mpegts @ 0x1c93a00] PES packet size mismatch
    [mpeg2video @ 0x1c979c0] Invalid frame dimensions 0x0.
    Last message repeated 9 times
    [NULL @ 0x1c9b1a0] start time for stream 5 is not set in estimate_timings_from_pts
    [NULL @ 0x1cb60c0] start time for stream 6 is not set in estimate_timings_from_pts
    [mpegts @ 0x1c93a00] PES packet size mismatch
    Last message repeated 3 times
    Input #0, mpegts, from 'problem1.ts':
    Duration: 00:01:00.64, start: 571.784756, bitrate: 3272 kb/s
    Program 1537
    Stream #0:0[0x78]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 720x576 [SAR 64:45 DAR 16:9], max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x82](fra): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 185 kb/s
    Stream #0:2[0x83](qaa): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 123 kb/s
    Stream #0:3[0x85](qad): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 123 kb/s
    Stream #0:4[0x8c](fra,fra): Subtitle: dvb_teletext ([6][0][0][0] / 0x0006)
    Stream #0:5[0x96](fra): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006) (hearing impaired)
    Stream #0:6[0x97](fra): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
    Unsupported codec with id 94215 for input stream 4
vixen_heart
 
Posts: 2
Joined: Fri Apr 18, 2014 10:49 am

Re: TeleText in ffmpeg

Postby llogan » Fri Apr 18, 2014 5:21 pm

I'm not familiar with teletext, but I believe ffmpeg can (de)mux dvb_teletext, but needs to be configured with --enable-libzvbi to support teletext decoding support.

So install libzvbi-dev and re-compile ffmpeg with --enable-libzvbi.
llogan
 
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