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• ffmpeg - improving quality

  14 juillet 2017, par jdjmedia

  My current CMS uses ffmpeg to encode videos. The source is MP4 and output is MP4. Here is the current line it uses :

  [2017-07-13 09:00:11] Executing : export
  FFMPEG_DATADIR=/home/httpd/html/domain.com/public_html/cms_admin//includes/presets/ ; /usr/local/bin/ffmpeg -y -i
  "/home/httpd/html/domain.com/public_html/cms_admin//storage//J80KTXaG4aE8FLHF0NZVUDB7PDMR487Q.mp4"
  -i "/home/httpd/html/members.domain.com/public_html/content/upload/scene/1080p/hys_katya.mp4"
  -i "/home/httpd/html/domain.com/public_html/cms_admin//storage//CZ6JY641aXDYCLNC7UTBMMCJRFXABJ6U.mp4"
  -filter_complex ’[0:0] [0:1] [1:0] [1:1] [2:0] [2:1] concat=n=3:v=1:a=1 [v] [a]’ -map ’[v]’ -map ’[a]’ -sn -b:v 12000k
  -vcodec h264 -pix_fmt yuv420p -r 30 -acodec aac -strict experimental -ab 127k -ar 44100 -ac 2 -dn -vpre hq -movflags faststart -s 1920x1080 -aspect 16:9 -f mp4 -vprofile high

  I have noticed that the quality it not that great. Any recommendations on what flags I might be able to use to make the output higher quality ?

• Filter overlay has an unconnected output from ffmpeg to ffserver

  11 mars 2018, par Кирилл Казаков

  I try use filter_complex (overlay) with ffmpeg. Then sent ffm stream to ffserver, then i try get stream via rtp.
  If i sent stream to ffserver - i get next error

  Filter overlay has an unconnected output

  But if output stream from ffmpeg to file ( sample.mp4 ) - its ok, no errors .....

  FFmpeg build :

  ffmpeg version N-86676-g45dbb40cd1-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.1 (Debian 5.4.1-11) 20170519
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  
    libavutil      55. 67.100 / 55. 67.100
  
    libavcodec     57.100.102 / 57.100.102
  
    libavformat    57. 75.100 / 57. 75.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 94.100 /  6. 94.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Hyper fast Audio and Video encoder

  Command ffmpeg :

  ./ffmpeg -i bg.jpg -thread_queue_size 512 -rtsp_transport tcp -i rtsp://ip:port/main -an -filter_complex "\
  
  [1:v]chromakey=0x4d8b40:0.093:0.09[ckout];\
  
  [0:v][ckout]overlay[out]" -map "[out]" -f ffm http://localhost:4000/feed1.ffm

  Output ffmpeg :

  Input #1, rtsp, from 'rtsp://ip:port/main':
  
    Metadata:
  
      title           : ss
  
      comment         : pp
  
    Duration: N/A, start: 80516.603067, bitrate: N/A
  
    Program 1 
  
      Stream #1:1: Video: h264 (Baseline) ([27][0][0][0] / 0x001B), yuv420p(progressive), 720x576, 25 fps, 25 tbr, 90k tbn
  
      Stream #1:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 98 kb/s
  
  Filter overlay has an unconnected output

  ffserver config :

  HTTPPort 4000
  
  RTSPPort 1235
  
  
  
  RTSPBindAddress 0.0.0.0
  
  HTTPBindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 10000
  
  
  
  <feed>
  
          File /tmp/feed1.ffm
  
          FileMaxSize 1G
  
  
  
          ACL allow 127.0.0.1
  
          ACL allow localhost
  
  </feed>
  
  
  
  <stream>
  
      Feed feed1.ffm
  
      Format rtp
  
  </stream>
  
  
  
  <stream>
  
      Format status
  
  </stream>

  Why i see error if stream go to ffserver, but no errors if stream go to file ?

• Videoshow NPM module with ffmpeg

  5 juillet 2018, par JZG

  I’m trying to use videoshow to convert multiple images to video, I have tried to change my code multiple times but now as you can see this is basically the same as in the module’s description page. Still I am receiving the following error as stated below.

  videoshow(images)
  
      .save('video.mp4')
  
      .on('start', function (command) {
  
          console.log('ffmpeg process started:', command)
  
      })
  
      .on('error', function (err) {
  
          console.error('Error:', err)
  
      })
  
      .on('end', function (output) {
  
          console.log('Video created in:', output)
  
      })
  
  
  
  
  
  Error: Error: ffmpeg exited with code 1: Error reinitializing filters!
  
  Failed to inject frame into filter network: Invalid argument
  
  Error while processing the decoded data for stream #2:0
  
  Conversion failed!
  
  
  
  at ChildProcess.<anonymous> (C:\Users\xxxxxx\Documents\Visual Studio 2017\Projects\Frame\Frame\server-side\node_modules\fluent-ffmpeg\lib\processor.js:182:22)
  
  at emitTwo (events.js:106:13)
  
  at ChildProcess.emit (events.js:191:7)
  
  at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)
  
  </anonymous>