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• avcodec_encode_video2 coding gets H264 video frames, sent through live555 services, VLC playback, unable to display

  2 mars 2018, par donghui.R

  avcodec_encode_video2 encoding to get AVPacket H264 video frames, live555 RTSP stream service sent, client VLC play, can not be displayed. But the direct preservation of AVPacket H264 video frames is H264 files, which can be played with VLC, but it is very fast. Do not know if I need to deal with H264 video frames more closely ??

• How to make video created with FFMPEG compatible to vlc media player as well

  4 mars 2020, par Junaid Farooq

  I am making a mp4 video while using this command from downloaded jpegs, everything is working fine but the video is not being played in VLC but in Media Player, default one of Ubuntu.

  ffmpeg -y -framerate 6 -i #{path}%d.jpg -i #{evercam_logo} -filter_complex '[1]scale=iw/2:-1[wm];[0][wm]overlay=x=main_w-overlay_w-10:y=main_h-overlay_h-10' -pix_fmt yuv420p -c:v h264_nvenc -preset slow -bufsize 1000k #{path}#{id}.mp4

  I have tried multiple formats but the results are same. what Am I missing here ? any help would be wonderful thank you.

• Random PIPELINE_ERROR_DECODE : video decoder reinitialization failed on Chromium HTML5 video tag

  9 janvier 2024, par Hello World

  System

  


  Running an Expo React Native app, with a <webview></webview> component that loads a NextJS app with an HTML5 <video></video> tag. The system with issues is running the app on Android 9.0 with WebView implementation set to Android System WebView 84.0. The system without issues is running the app on Android 10.0 with WebView implementation set to Android System WebView 120.0.

  


  Details

  


  Video files being played by the <video></video> element are previously transcoded by the following fluent-ffmpeg node package :

  


  import ffmpeg from 'fluent-ffmpeg'

ffmpeg(rawVideoFileUrl)
  .videoCodec('libx264')
  .audioCodec('aac')
  .outputOption('-strict experimental')
  .outputOption('-movflags frag_keyframe+faststart')
  .format('mp4')


  


  My knowledge on video transcoding is very limited, but I have to do the transcoding to guarantee that the files are compatible to be played by my NextJS web app. In my research, my findings pointed to these FFMPEG command line arguments for my purpose.

  


  For the aforementioned WebView version, H.264 with AAC, should be compatible, yet playback is not stable. Many times it will play just fine, but other times I receive the error :

  


  PIPELINE_ERROR_DECODE: video decoder reinitialization failed


  


  If I refresh the web app, it works again. That leads me to believe it is somehow memory related, maybe caused by incompatibility.

  


  I'm not sure whether video decoder reinitialization failed produced by the HTML5 <video></video> tag is a problem of transcoding or not, as the videos play fine most of the time and only produces that error in the console some of the times, unexpectedly.

  


  Question

  


  Is there something that I can do to the fluent-ffmpeg command to make the video files more widely compatible, including the WebView 84.0 system too, or is the issue somewhere else ?

  


  In this case, updating WebView is not an option.