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• Video encoder & segmenter for HLS VoD poor quality

  10 juillet 2017, par Murilo

  I am trying to encode and segment video for HLS on demand(VoD).
  I am using the following code for such :

  ffmpeg -i 20170706_174314.mp4 -c 24 \
  
          -vcodec libx264 -acodec aac -ac 1 -strict -2 -b:v 128k \
  
          -profile:v baseline -maxrate 400k -bufsize 1835k \
  
          -hls_time 10 -hls_playlist_type vod -vsync 1 \
  
          video_chunks/index1.m3u8 \
  
          -c 24 -vcodec libx264 -acodec aac -ac 1 -strict -2 -b:v 128k \
  
          -profile:v baseline -maxrate 700k -bufsize 1835k \
  
          -hls_time 10 -hls_playlist_type vod -vsync 1 \
  
          video_chunks/index2.m3u8

  I tried this other code also just for segmenting but had the same exactly problem :

  ffmpeg -i 20170706_174314.mp4 \
  
  -c:a libmp3lame -ar 48000 -ab 64k  -c:v libx264 -b:v 128k -flags \ 
  
  -global_header -map 0 -f segment \
  
  -segment_list video_chunks/test.m3u8 -segment_time 10 -segment_format mpegts \
  
  video_chunks/segment_%05d.ts

  Later on I create another playlist with bandwidth separators to call on the two other playlists generated with the code above.

  This code was working great on some videos but yesterday I recorded a video with my Samsung J7 Prime phone to test since the videos will be generated by phone and this video was poorly encoded. The quality sucks and some parts of the video turned Black&White.

  Another thing I noticed on this video is that the following message kept appearing in loop until the end of the encoding&segmenting process.

  Past duration X too large

  Where X is a decimal really close to

  0.675316

  The link to the video is below :

  Dropbox Link

  My FFmpeg version :

  ffmpeg --version
  
  ffmpeg version N-86482-gbc40674 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 7.1.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 66.100 / 55. 66.100
  
    libavcodec     57. 99.100 / 57. 99.100
  
    libavformat    57. 73.100 / 57. 73.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 92.100 /  6. 92.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100

  SO : Windows 10

  EDIT1 : Link to the output
  If you see the output it might be worth saying I am also seeing the message

  VBV underflow(Frame X, -Y bits)

• Could not get audio( libopus ) stream from ffserver via rtp

  7 juillet 2017, par Кирилл Казаков

  I need to get the rtp stream with the next codecs vp8,opus.
  I get a stream from a camera (h264, aac), then I send to ffmpeg,then I send it to the ffserver and from there I want to receive a stream in the format rtp.
  Video (VP8) without audio i successfully get, but stream video with audio ( any codecs ( aac, vorbis, opus ) ) not work.

  ffmpeg command :

   ./ffmpeg -thread_queue_size 512 -rtsp_transport tcp -i rtsp://ip:port/stream -analyzeduration 0 -threads 2 http://localhost:4000/feed1.ffm

  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
  
  
  
      # Video settings
  
      VideoCodec libvpx
  
      VideoSize 720x576
  
      VideoFrameRate 25
  
      VideoBitRate 512
  
      AVOptionVideo maxrate 2000
  
      VideoQMin 4
  
      VideoQMax 50
  
      VideoBufferSize 4000
  
  
  
      AVOptionVideo cpu-used 3
  
      AVOptionVideo crf 33
  
      AVOptionVideo quality realtime
  
      AVOptionVideo flags +global_header
  
      #PreRoll 0
  
      #StartSendOnKey
  
  
  
      # Audio settings
  
      #AudioCodec aac
  
      #AudioCodec libopus
  
      #Strict -2
  
      AudioBitRate 128
  
      AudioChannels 2
  
      AudioSampleRate 48k
  
      AVOptionAudio flags +global_header
  
  
  
      ACL allow localhost
  
  </stream>

  And without video (only audio) - not worked

  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
  
  
  
      # Video settings
  
      NoVideo
  
  
  
      # Audio settings
  
      #AudioCodec aac
  
      #AudioCodec libopus
  
      #Strict -2
  
      AudioBitRate 128
  
      AudioChannels 2
  
      AudioSampleRate 48k
  
      AVOptionAudio flags +global_header
  
  
  
      ACL allow localhost
  
  </stream>

  I try to connect to my stream via vlc, but i see error in vlc ( if audio libopus) core error: could not identify codec, if audio codec (e.g. aac ) - live555 error: no data received in 10s, aborting .

  ffserver info build :

  ffserver 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

  ffmpeg info 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

  What a problem ? Any idea ?
  .

• Overlay Image on moving object in Video

  5 juillet 2017, par Karandeep Atwal

  I am using FFmpeg to overlay image/emoji on video by this command -

  "-i "+inputfilePath+" -filter_complex "+"[0][1]overlay=enable='between(t,"+startTime+","+endTime+")'[v1]"+" -map [v0] -map 0:a "+OutputfilePath;  

  But above command only overlay image over video and stays still.

  In Instagram and Snapchat there is New pin feature . I want exactly same ,eg blur on moving faces or as in below videos -

  

  Here is link.

  Is it possible via FFmpeg ?

  I think someone with OPENCV or Argumented Reality knowledge can help in this .