Recherche avancée

Sur d’autres sites (8190)

• build : Do not add -g to HOSTCFLAGS

  12 décembre 2013, par Diego Biurrun

  build : Do not add -g to HOSTCFLAGS
  The flag is not unconditionally added to CFLAGS either and the
  
  programs built on the host do not get habitually fed to a debugger.
  

  • [DH] configure

• FFPROBE get start-time of audio only

  13 février 2023, par Marcus

  I am using this to get the start time of the video and audio :

  


  ffprobe -show_entries stream=start_time -i https://www.website.com/video.mp4


  


  And the response I get is :

  


      ffprobe version 4.3.1 Copyright (c) 2007-2020 the FFmpeg developers
      built with Apple clang version 12.0.0 (clang-1200.0.32.28)
      configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_9 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --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-libsoxr --enable-videotoolbox --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack
      libavutil      56. 51.100 / 56. 51.100
      libavcodec     58. 91.100 / 58. 91.100
      libavformat    58. 45.100 / 58. 45.100
      libavdevice    58. 10.100 / 58. 10.100
      libavfilter     7. 85.100 /  7. 85.100
      libavresample   4.  0.  0 /  4.  0.  0
      libswscale      5.  7.100 /  5.  7.100
      libswresample   3.  7.100 /  3.  7.100
      libpostproc    55.  7.100 / 55.  7.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://www.website.com/video.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2avc1mp41
        encoder         : Lavf58.76.100
      Duration: 00:03:14.85, start: 0.000000, bitrate: 4488 kb/s
        Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 4418 kb/s, 24 fps, 24 tbr, 90k tbn, 48 tbc (default)
        Metadata:
          handler_name    : VideoHandler
        Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
        Metadata:
          handler_name    : SoundHandler
[STREAM]
start_time=0.000000
[/STREAM]
[STREAM]
start_time=9.892993
[/STREAM]


  


  How can I get only the second stream, which is the audio, and without all the extra info ?

  


  So the response would just be :

  


  


  start_time=9.892993

  


  


• ffmpeg - error message "Invalid data found when processing input" when trying to convert a video file but video is playable

  1er septembre 2020, par Rotem

  I'm using ffmpeg version

  


  ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.8)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1_1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include/darwin -fno-stack-check' --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-libvidstab --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-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100


  


  When I try to process this video using this command

  


  ffmpeg -i IMG_0029.mp4 -y newvideo2.mp4


  


  I get this output

  


  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8a1f008200] could not find corresponding trex (id 1)
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8a1f008200] could not find corresponding track id 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8a1f008200] trun track id unknown, no tfhd was found
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f8a1f008200] error reading header
IMG_0029.mp4: Invalid data found when processing input


  


  I don't understand what is the problem as the video is playable.

  


  Would appreciate any help.