[FFmpeg-trac] #8908(undetermined:new): PSG subtitles timestamps not starting at 0 when not exporting video too

FFmpeg trac at avcodec.org
Thu Sep 24 11:12:38 EEST 2020


#8908: PSG subtitles timestamps not starting at 0 when not exporting video too
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  Rapper_skull                       |
               Status:  new          |                 Priority:  important
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 Hi, I was trying to extract hdmv_pgs_subtitle from a Blu-ray m2ts file but
 I found out that the timestamps were wrong and in fact very different from
 the output of eac3to. In fact, opening the files with an Hex Editor
 revealed that the first timestamp was very close to 0 when output with
 ffmpeg, while correct in the file produced by eac3to.
 Since this is a timing issue, I tried to output also the video alongside
 the .sup file (on /dev/null) and in fact the problem is solved. My thought
 is that without a video "to sync with" the first caption line is given
 timestamp zero or near-zero and the others will follow.
 Unfortunately using ''-copyts'' will not work (wrong timestamps) and
 ''-copyts -start_at_zero'' does the same thing as before.
 Then, while preparing a test file to post here, I realized the problem is
 that I'm using ''cat'' and reading from stdin. In fact if I use the name
 of the file ffmpeg works fine without issues. Unfortunately I can't
 directly specify the file name, because I need to concatenate many input
 files one after another (hence cat).
 Finally I would like to point out that even if the workaround works, the
 file is not exactly the same as the one produced by eac3to. In fact
 timestamps are a little smaller: it starts with a difference of 1 in the
 timestamp, and grows to about 20000 (corresponding to a 22 ms difference)
 over the course of a 2.5h movie. Another difference is that the second pts
 is present in the ffmpeg output.

 How to reproduce:
 {{{
 % cat test.m2ts | ffmpeg -i - -y -c copy -map i:0x1200
 "eng_test_wrong.sup"
 ffmpeg version N-99352-gd8ce8e8 Copyright (c) 2000-2020 the FFmpeg
 developers
   built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
   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 --extra-
 libs='-lpthread -lm' --bindir=/home/rapperskull/bin --enable-gpl --enable-
 gnutls --enable-libaom --enable-libass --enable-libfdk-aac --enable-
 libfreetype --enable-libmp3lame --enable-libopus --enable-libsvtav1
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
 --enable-nonfree
   libavutil      56. 59.100 / 56. 59.100
   libavcodec     58.106.100 / 58.106.100
   libavformat    58. 58.100 / 58. 58.100
   libavdevice    58. 11.102 / 58. 11.102
   libavfilter     7. 87.100 /  7. 87.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 [mpegts @ 0x7fffd71f7700] Failed to open codec in
 avformat_find_stream_info
     Last message repeated 1 times
 [NULL @ 0x7fffd72422c0] ignoring invalid SAR: 40/33
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 15
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 16
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 17
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 18
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 19
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 20
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 21
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 22
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 23
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 24
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 25
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 26
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 27
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd71f7700] Could not find codec parameters for stream 28
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 Input #0, mpegts, from 'pipe:':
   Duration: N/A, start: 4198.000000, bitrate: N/A
   Program 1
     Stream #0:0[0x1011]: Video: vc1 (Advanced) (VC-1 / 0x312D4356),
 yuv420p(bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps,
 23.98 tbr, 90k tbn, 47.95 tbc
     Stream #0:1[0x1100]: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086),
 48000 Hz, 5.1(side), s16p
     Stream #0:2[0x1101]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:3[0x1102]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:4[0x1103]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:5[0x1104]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:6[0x1105]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:7[0x1106]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:8[0x1107]: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086),
 48000 Hz, 5.1(side), s16p
     Stream #0:9[0x1108]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:10[0x1109]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:11[0x110a]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:12[0x110b]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:13[0x110c]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:14[0x110d]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:15[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:16[0x1201]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:17[0x1202]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:18[0x1203]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:19[0x1204]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:20[0x1205]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:21[0x1206]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:22[0x1207]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:23[0x1208]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:24[0x1209]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:25[0x120a]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:26[0x120b]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:27[0x120c]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:28[0x120d]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:29[0x120e]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:30[0x120f]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:31[0x1210]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:32[0x1211]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:33[0x1212]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:34[0x1a00]: Audio: dts (DTS Express) ([162][0][0][0] /
 0x00A2), 48000 Hz, stereo, fltp, 187 kb/s
     Stream #0:35[0x1b00]: Video: vc1 (Advanced) (VC-1 / 0x312D4356),
 yuv420p(smpte170m/smpte170m/unknown, progressive), 720x480 [SAR 40:33 DAR
 20:11], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
 Output #0, sup, to 'eng_test_wrong.sup':
   Metadata:
     encoder         : Lavf58.58.100
     Stream #0:0: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
 Stream mapping:
   Stream #0:15 -> #0:0 (copy)
 size=      44kB time=00:00:02.85 bitrate= 127.4kbits/s speed=0.843x
 video:0kB audio:0kB subtitle:44kB other streams:0kB global headers:0kB
 muxing overhead: 0.286400%
 }}}

 {{{
 % ffmpeg -i test.m2ts -y -c copy -map i:0x1200 "eng_test_good.sup"
 ffmpeg version N-99352-gd8ce8e8 Copyright (c) 2000-2020 the FFmpeg
 developers
   built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
   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 --extra-
 libs='-lpthread -lm' --bindir=/home/rapperskull/bin --enable-gpl --enable-
 gnutls --enable-libaom --enable-libass --enable-libfdk-aac --enable-
 libfreetype --enable-libmp3lame --enable-libopus --enable-libsvtav1
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
 --enable-nonfree
   libavutil      56. 59.100 / 56. 59.100
   libavcodec     58.106.100 / 58.106.100
   libavformat    58. 58.100 / 58. 58.100
   libavdevice    58. 11.102 / 58. 11.102
   libavfilter     7. 87.100 /  7. 87.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 [mpegts @ 0x7fffb9f94700] Failed to open codec in
 avformat_find_stream_info
     Last message repeated 1 times
 [NULL @ 0x7fffb9fdd200] ignoring invalid SAR: 40/33
 [mpegts @ 0x7fffb9f94700] start time for stream 15 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 16 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 17 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 18 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 19 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 20 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 21 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 22 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 23 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 24 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 25 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 26 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 27 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] start time for stream 28 is not set in
 estimate_timings_from_pts
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 1, dts = 385432800).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 2, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 3, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 4, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 5, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 6, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 7, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 8, dts = 385432800).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 9, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 10, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 11, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 12, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 13, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 14, dts = 385443360).
 [mpegts @ 0x7fffb9f94700] PES packet size mismatch
 [mpegts @ 0x7fffb9f94700] Packet corrupt (stream = 34, dts = 385438560).
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 15
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 16
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 17
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 18
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 19
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 20
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 21
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 22
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 23
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 24
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 25
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 26
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 27
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffb9f94700] Could not find codec parameters for stream 28
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 Input #0, mpegts, from 'test.m2ts':
   Duration: 00:01:25.42, start: 4198.000000, bitrate: 34372 kb/s
   Program 1
     Stream #0:0[0x1011]: Video: vc1 (Advanced) (VC-1 / 0x312D4356),
 yuv420p(bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps,
 23.98 tbr, 90k tbn, 47.95 tbc
     Stream #0:1[0x1100]: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086),
 48000 Hz, 5.1(side), s16p
     Stream #0:2[0x1101]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:3[0x1102]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:4[0x1103]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:5[0x1104]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:6[0x1105]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:7[0x1106]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:8[0x1107]: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086),
 48000 Hz, 5.1(side), s16p
     Stream #0:9[0x1108]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:10[0x1109]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:11[0x110a]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:12[0x110b]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:13[0x110c]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:14[0x110d]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:15[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:16[0x1201]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:17[0x1202]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:18[0x1203]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:19[0x1204]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:20[0x1205]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:21[0x1206]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:22[0x1207]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:23[0x1208]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:24[0x1209]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:25[0x120a]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:26[0x120b]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:27[0x120c]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:28[0x120d]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:29[0x120e]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:30[0x120f]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:31[0x1210]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:32[0x1211]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:33[0x1212]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:34[0x1a00]: Audio: dts (DTS Express) ([162][0][0][0] /
 0x00A2), 48000 Hz, stereo, fltp, 187 kb/s
     Stream #0:35[0x1b00]: Video: vc1 (Advanced) (VC-1 / 0x312D4356),
 yuv420p(smpte170m/smpte170m/unknown, progressive), 720x480 [SAR 40:33 DAR
 20:11], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
 Output #0, sup, to 'eng_test_good.sup':
   Metadata:
     encoder         : Lavf58.58.100
     Stream #0:0: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
 Stream mapping:
   Stream #0:15 -> #0:0 (copy)
 Press [q] to stop, [?] for help
 size=      44kB time=00:01:21.60 bitrate=   4.5kbits/s speed=10.2x
 video:0kB audio:0kB subtitle:44kB other streams:0kB global headers:0kB
 muxing overhead: 0.286400%
 }}}

 {{{
 % cat test.m2ts | ffmpeg -i - -y -c copy -map i:0x1011 -f vc1 /dev/null -c
 copy -map i:0x1200 "eng_test.sup"
 ffmpeg version N-99352-gd8ce8e8 Copyright (c) 2000-2020 the FFmpeg
 developers
   built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
   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 --extra-
 libs='-lpthread -lm' --bindir=/home/rapperskull/bin --enable-gpl --enable-
 gnutls --enable-libaom --enable-libass --enable-libfdk-aac --enable-
 libfreetype --enable-libmp3lame --enable-libopus --enable-libsvtav1
 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265
 --enable-nonfree
   libavutil      56. 59.100 / 56. 59.100
   libavcodec     58.106.100 / 58.106.100
   libavformat    58. 58.100 / 58. 58.100
   libavdevice    58. 11.102 / 58. 11.102
   libavfilter     7. 87.100 /  7. 87.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 [mpegts @ 0x7fffd0a96880] Failed to open codec in
 avformat_find_stream_info
     Last message repeated 1 times
 [NULL @ 0x7fffd0ae1440] ignoring invalid SAR: 40/33
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 15
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 16
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 17
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 18
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 19
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 20
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 21
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 22
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 23
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 24
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 25
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 26
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 27
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 [mpegts @ 0x7fffd0a96880] Could not find codec parameters for stream 28
 (Subtitle: hdmv_pgs_subtitle (pgssub) ([144][0][0][0] / 0x0090)):
 unspecified size
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 Input #0, mpegts, from 'pipe:':
   Duration: N/A, start: 4198.000000, bitrate: N/A
   Program 1
     Stream #0:0[0x1011]: Video: vc1 (Advanced) (VC-1 / 0x312D4356),
 yuv420p(bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps,
 23.98 tbr, 90k tbn, 47.95 tbc
     Stream #0:1[0x1100]: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086),
 48000 Hz, 5.1(side), s16p
     Stream #0:2[0x1101]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:3[0x1102]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:4[0x1103]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:5[0x1104]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:6[0x1105]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:7[0x1106]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:8[0x1107]: Audio: dts (DTS-HD MA) ([134][0][0][0] / 0x0086),
 48000 Hz, 5.1(side), s16p
     Stream #0:9[0x1108]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:10[0x1109]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:11[0x110a]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:12[0x110b]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:13[0x110c]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:14[0x110d]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
 5.1(side), fltp, 448 kb/s
     Stream #0:15[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:16[0x1201]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:17[0x1202]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:18[0x1203]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:19[0x1204]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:20[0x1205]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:21[0x1206]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:22[0x1207]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:23[0x1208]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:24[0x1209]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:25[0x120a]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:26[0x120b]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:27[0x120c]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:28[0x120d]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090)
     Stream #0:29[0x120e]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:30[0x120f]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:31[0x1210]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:32[0x1211]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:33[0x1212]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] /
 0x0090), 1920x1080
     Stream #0:34[0x1a00]: Audio: dts (DTS Express) ([162][0][0][0] /
 0x00A2), 48000 Hz, stereo, fltp, 187 kb/s
     Stream #0:35[0x1b00]: Video: vc1 (Advanced) (VC-1 / 0x312D4356),
 yuv420p(smpte170m/smpte170m/unknown, progressive), 720x480 [SAR 40:33 DAR
 20:11], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
 Output #0, vc1, to '/dev/null':
   Metadata:
     encoder         : Lavf58.58.100
     Stream #0:0: Video: vc1 (Advanced) (VC-1 / 0x312D4356), yuv420p(bt709,
 progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr,
 23.98 tbn, 23.98 tbc
 Output #1, sup, to 'eng_test.sup':
   Metadata:
     encoder         : Lavf58.58.100
     Stream #1:0: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
 Stream mapping:
   Stream #0:0 -> #0:0 (copy)
   Stream #0:15 -> #1:0 (copy)
 frame= 2046 fps=595 q=-1.0 Lsize=  231308kB time=00:01:25.29
 bitrate=22215.9kbits/s speed=24.8x
 video:231308kB audio:0kB subtitle:44kB other streams:0kB global
 headers:0kB muxing overhead: unknown
 }}}

 I truncated the m2ts file to include the first two captions, but I don't
 know how to post it, since it's still 350 MB.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8908>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


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