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• ffmpeg cut flv but resulting video cannot be processed on youtube

  20 avril 2017, par user1017674

  I am using a simple ffmpeg command to cut some videos.

  The command i ran is

  ffmpeg -i test.flv -ss 0 -to 60 -c copy output.flv

  The output.flv turns out is not processable on youtube, but I am able to play this file locally using a random flv player that I downloaded.

  This is the log when cutting the video.

  The original file test.flv can be found here.
  https://drive.google.com/open?id=0B5eHJIAbpaIYaW95ZlFTMTUzNGc

  The output file output.flv can be found here.
  https://drive.google.com/open?id=0B5eHJIAbpaIYejk5dGJTOEo1UU0

  ./ffmpeg -i test.flv -ss 0 -to 60 -c copy diablo.flv
  
  ffmpeg version 3.3 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with llvm-gcc 4.2.1 (LLVM build 2336.11.00)
  
    configuration: --prefix=/Volumes/Ramdisk/sw --enable-gpl --enable-pthreads --enable-version3 --enable-libspeex --enable-libvpx --disable-decoder=libvpx --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libx264 --enable-avfilter --enable-libopencore_amrwb --enable-libopencore_amrnb --enable-filters --enable-libgsm --enable-libvidstab --enable-libx265 --disable-doc --arch=x86_64 --enable-runtime-cpudetect
  
    libavutil      55. 58.100 / 55. 58.100
  
    libavcodec     57. 89.100 / 57. 89.100
  
    libavformat    57. 71.100 / 57. 71.100
  
    libavdevice    57.  6.100 / 57.  6.100
  
    libavfilter     6. 82.100 /  6. 82.100
  
    libswscale      4.  6.100 /  4.  6.100
  
    libswresample   2.  7.100 /  2.  7.100
  
    libpostproc    54.  5.100 / 54.  5.100
  
  Input #0, flv, from 'test.flv':
  
    Metadata:
  
      creator         : Coded
  
      metadatacreator : Yet Another Metadata Injector for FLV - Version 1.9
  
      hasKeyframes    : true
  
      hasVideo        : true
  
      hasAudio        : true
  
      hasMetadata     : true
  
      canSeekToEnd    : true
  
      datasize        : 69602014
  
      videosize       : 63600961
  
      audiosize       : 5917165
  
      lasttimestamp   : 292
  
      lastkeyframetimestamp: 292
  
      lastkeyframelocation: 69603218
  
    Duration: 00:04:51.68, start: 0.080000, bitrate: 1909 kb/s
  
      Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x720, 1742 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc
  
      Stream #0:1: Audio: aac (LC), 48000 Hz, stereo, fltp, 158 kb/s
  
  Output #0, flv, to 'diablo.flv':
  
    Metadata:
  
      creator         : Coded
  
      metadatacreator : Yet Another Metadata Injector for FLV - Version 1.9
  
      hasKeyframes    : true
  
      hasVideo        : true
  
      hasAudio        : true
  
      hasMetadata     : true
  
      canSeekToEnd    : true
  
      datasize        : 69602014
  
      videosize       : 63600961
  
      audiosize       : 5917165
  
      lasttimestamp   : 292
  
      lastkeyframetimestamp: 292
  
      lastkeyframelocation: 69603218
  
      encoder         : Lavf57.71.100
  
      Stream #0:0: Video: h264 (High) ([7][0][0][0] / 0x0007), yuv420p(progressive), 1280x720, q=2-31, 1742 kb/s, 25 fps, 25 tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 158 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame= 1252 fps=0.0 q=-1.0 Lsize=   12074kB time=00:00:59.98 bitrate=1648.8kbits/s speed=1.21e+03x    
  
  video:10849kB audio:1153kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.598021%

• ffmpeg created video receiving error message on Youtube

  1er février 2023, par David Ruan

  I am using this command to generate a video with a cover page and an audio.

  


  ffmpeg -loop 1 -r 1 -i c :/temp/coverImage.jpeg -i C :/temp/out/input.mp3 -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -c:a copy -shortest -c:v libx264 C :/temp/VideoOut/output.mp4

  


  But the generated video got an error message from Youtube after it is uploaded.

  


  "Your video has an unsupported aspect ratio"

  


  Any idea how to solve this issue ?

  


• FFMPEG YouTube Live Too Fast

  6 avril 2017, par Liam Martens

  So I am streaming video and audio to YouTube as follows

  THE CONTEXT

  1. First I convert a graphic GIF to an MP4 file

  ffmpeg -f gif -i graphic.gif -c:v libx264 -pix_fmt yuv420p -vf scale=1280:-1 temp.mp4

  2. Then I overlay a PNG with text over the MP4

  ffmpeg -i temp.mp4 -i overlay.png -filter_complex "overlay=10:10" '.$graphicsPath.'/graphic.mp4

  3. Then I start the stream the video and combine it with audio using following code (sources.txt is just a concat list *)

  ffmpeg -f concat -i sources.txt -i music.mp3 \
  
      -c:v libx264 -c:a aac -shortest -deinterlace \
  
      -pix_fmt yuv420p -preset '.$encoding.' -r 30 -g 60 -b:v 2500k \
  
      -acodec libmp3lame -ar 44100 -threads 6 -qscale 3 -b:a 712000 \
  
      -maxrate 800k -bufsize 1400k \
  
      -f flv rtmp://a.rtmp.youtube.com/live2/KEY

  4. After the stream ends, the code starts over again with a new song to mimic a 247 stream.

  THE ISSUE

  So the issue I am having is that it appears to be streaming too fast. It’s like the opposite of buffering issues where the buffer is way too long (as in a full song buffered by the time the first one has finished if you open the stream)

  Does anyone know how I could throttle the output ? I have tried with maxrate and bufsize but no real result.

  * sources.txt example
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  and so on