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Sur d’autres sites (8714)

  • Avoid using the term "file" and prefer "url" in some docs and comments

    5 décembre 2016, par Michael Niedermayer
    Avoid using the term "file" and prefer "url" in some docs and comments

    This should make it less ambigous that these are URLs
    

    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] doc/ffmpeg.texi
    • [DH] doc/ffplay.texi
    • [DH] doc/ffprobe.texi
    • [DH] ffmpeg_opt.c

  • avcodec/pafvideo : Check input space for decode_0() before slow operations

    29 avril 2019, par Michael Niedermayer
    avcodec/pafvideo : Check input space for decode_0() before slow operations

    Fixes : Timeout (11sec -> 2sec)
    
Fixes : 14403/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PAF_VIDEO_fuzzer-5697465698746368
    

    Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/pafvideo.c

  • Why seek on ts file is so slow ?

    2 juillet 2015, par skipper

    I am dealing with a ts file, following is ffprobe output :

    ffprobe version N-45589-gb6a0b8b-   http://johnvansickle.com/ffmpeg/    Copyright (c) 2007-2014 the FFmpeg developers
    
  built on Aug 28 2014 02:30:32 with gcc 4.8 (Debian 4.8.3-9)
    
  configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --disable-ffserver --enable-libass --enable-gnutls --cc=gcc-4.8
    
  libavutil      54.  7.100 / 54.  7.100
    
  libavcodec     56.  0.101 / 56.  0.101
    
  libavformat    56.  3.100 / 56.  3.100
    
  libavdevice    56.  0.100 / 56.  0.100
    
  libavfilter     5.  0.103 /  5.  0.103
    
  libswscale      3.  0.100 /  3.  0.100
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  0.100 / 53.  0.100
    
[hevc @ 0x298b4a0] No start code is found.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] No start code is found.
    
    Last message repeated 2 times
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] No start code is found.
    
    Last message repeated 7 times
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] No start code is found.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[hevc @ 0x298b4a0] PPS id out of range: 0
    
[hevc @ 0x298b4a0] Error parsing NAL unit #2.
    
[mpegts @ 0x2987560] decoding for stream 0 failed
    
[mpegts @ 0x2987560] Could not find codec parameters for stream 0 (Video: hevc ([36][0][0][0] / 0x0024)): unspecified size
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Input #0, mpegts, from 'mp4box-jlsj-4k.ts':
    
  Duration: 00:02:15.00, start: 0.001111, bitrate: 31116 kb/s
    
  Program 1
    
    Stream #0:0[0x65]: Video: hevc ([36][0][0][0] / 0x0024), 25 tbr, 90k tbn, 90k tbc
    
    Stream #0:1[0x66]: Audio: eac3, 48000 Hz, 5.1(side), fltp, 448 kb/s

    The problem I’m having is that seeking on this file is extremely slow, it took more than 1 minute to complete seek operation.

    This ts file is 500MB in size, has 2,793,052 ts packets, 2,750,469 video packets, 137 video packets with random_acces_indicator.
    What’s the possible reason for the slow seek ? Why is ffmpeg reporting these errors ? What do I need to do for the analysis ?

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