Obtention d'erreurs étranges dans ffmpeg lors de la recherche, "POC co-localisés non disponibles", "mmco: unref short failure"

Question

J'ai vu d'autres personnes avoir le problème mais je n'ai pas vu de solution. Si j'essaye de chercher avec ffmpeg, j'obtiens des erreurs et la vidéo qui en résulte se fige à une image au début avant de bouger. Même si j'ouvre la vidéo dans VLC, je ne peux pas chercher à ce point exact lorsque le problème se produit. Il semble que la vidéo soit corrompue d'une manière ou d'une autre, mais la lecture est correcte, peut-elle être corrigée?

Si je change le format de conteneur de l'entrée de ts en mp4, l'erreur ne se produit pas mais au lieu du cadre figé, j'ai un écran noir.

Commande complète et sortie:

$ ffmpeg -ss 5.5 -i video.ts -to 10 -avoid_negative_ts make_zero -vcodec libx264 -crf 23 -acodec copy output.ts

ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple LLVM version 10.0.1 (clang-1001.0.46.4)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.3_1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-11.0.2.jdk/Contents/Home/include/darwin' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
  libavutil      56. 22.100 / 56. 22.100
  libavcodec     58. 35.100 / 58. 35.100
  libavformat    58. 20.100 / 58. 20.100
  libavdevice    58.  5.100 / 58.  5.100
  libavfilter     7. 40.101 /  7. 40.101
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  3.100 /  5.  3.100
  libswresample   3.  3.100 /  3.  3.100
  libpostproc    55.  3.100 / 55.  3.100
Input #0, mpegts, from 'video.ts':
  Duration: 00:32:50.07, start: 1.407811, bitrate: 2227 kb/s
  Program 1 
    Metadata:
      service_name    : Service01
      service_provider: FFmpeg
    Stream #0:0[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 117 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[h264 @ 0x7fa933003c00] co located POCs unavailable
[h264 @ 0x7fa933001800] mmco: unref short failure
[h264 @ 0x7fa931800000] co located POCs unavailable
[h264 @ 0x7fa933003c00] mmco: unref short failure
[libx264 @ 0x7fa932801000] using SAR=1/1
[libx264 @ 0x7fa932801000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7fa932801000] profile High, level 3.1
Output #0, mpegts, to 'output.ts':
  Metadata:
    encoder         : Lavf58.20.100
    Stream #0:0: Video: h264 (libx264), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 90k tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.35.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Stream #0:1: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 117 kb/s
frame=  236 fps= 38 q=-1.0 Lsize=    2974kB time=00:00:09.98 bitrate=2439.3kbits/s speed=1.62x    
video:2559kB audio:165kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 9.200110%
[libx264 @ 0x7fa932801000] frame I:4     Avg QP:20.49  size: 56038
[libx264 @ 0x7fa932801000] frame P:115   Avg QP:22.34  size: 15286
[libx264 @ 0x7fa932801000] frame B:117   Avg QP:24.56  size:  5452
[libx264 @ 0x7fa932801000] consecutive B-frames: 18.2% 44.1%  8.9% 28.8%
[libx264 @ 0x7fa932801000] mb I  I16..4: 26.5% 32.9% 40.6%
[libx264 @ 0x7fa932801000] mb P  I16..4:  7.4% 12.8%  3.4%  P16..4: 30.6%  8.0%  4.0%  0.0%  0.0%    skip:33.8%
[libx264 @ 0x7fa932801000] mb B  I16..4:  1.5%  2.3%  1.1%  B16..8: 20.9%  4.1%  0.6%  direct: 3.1%  skip:66.4%  L0:38.0% L1:58.6% BI: 3.4%
[libx264 @ 0x7fa932801000] 8x8 transform intra:50.8% inter:63.0%
[libx264 @ 0x7fa932801000] coded y,uvDC,uvAC intra: 40.3% 71.6% 31.3% inter: 9.5% 21.8% 1.4%
[libx264 @ 0x7fa932801000] i16 v,h,dc,p: 42% 35% 15%  8%
[libx264 @ 0x7fa932801000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 25% 27%  4%  3%  3%  5%  3%  6%
[libx264 @ 0x7fa932801000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 27% 15%  6%  6%  5%  7%  5%  6%
[libx264 @ 0x7fa932801000] i8c dc,h,v,p: 42% 28% 22%  8%
[libx264 @ 0x7fa932801000] Weighted P-Frames: Y:4.3% UV:4.3%
[libx264 @ 0x7fa932801000] ref P L0: 74.0% 13.6%  9.5%  2.9%  0.1%
[libx264 @ 0x7fa932801000] ref B L0: 85.0% 13.2%  1.8%
[libx264 @ 0x7fa932801000] ref B L1: 98.3%  1.7%
[libx264 @ 0x7fa932801000] kb/s:2220.26

Answer 1

Résolu ... d'abord:

ffmpeg -i video.ts -c copy video.mp4

puis au lieu de:

ffmpeg -ss 5.5 -i video.mp4 -to 10 -avoid_negative_ts make_zero -vcodec libx264 -crf 23 -acodec copy output.ts

tu fais:

ffmpeg -ss 5.5 -i video.mp4 -ss 0 -to 10 -avoid_negative_ts make_zero -vcodec libx264 -crf 23 -acodec copy output.ts