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• Node Webkit-Designing Media Player support all media codec(format)

  14 décembre 2015, par Vish

  I am working on product which classify any kind of media into movies, tv shows, videos, audio and images. Node webkit with angularjs and node is its base. Now I am trying to bring local playback, which enabled this classified media to play inside this desktop app. Have done lot of research, following are feasible solution to me :

  1. Getting ffmpegsumo.dll with all codec support, hence html <audio></audio> and <video></video> able to play all this videos.
  2. All unsupported video or audio to be converted into supporting codec format and steam it to <audio></audio> and <video></video> tag.
  3. Use some third party plugin to support like WebCherima .

  Option 1 and 2 are not looking feasible to me. For option 1, we have compile Chromium 41.0.2272.76 or nw.js v0.12.3 to update ffmpegsumo.dll with more codec. On other side Option 2 looking difficult to get good performance. I have learn few limitation of third party plugins.
  Please provide some insight ? Thanks !

• Using HW accelerate video encoding

  9 juin 2019, par RoboGil

  I am trying to get ffmpeg HW acceleration on an UpBoard .
  It uses an Atom x5 z8350 processor and Intel HD 400 GPU

  I have also followed this tutorial in order to compile ffmpeg with libmfx enabled.

  $ ffmpeg -encoders | grep qsv
  
  ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
  
    configuration: --enable-libmfx
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
   V..... h264_qsv             H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration) (codec h264)
  
   V..... hevc_qsv             HEVC (Intel Quick Sync Video acceleration) (codec hevc)
  
   V..... mjpeg_qsv            MJPEG (Intel Quick Sync Video acceleration) (codec mjpeg)
  
   V..... mpeg2_qsv            MPEG-2 video (Intel Quick Sync Video acceleration) (codec mpeg2video)

  However, when trying to encode I video I am getting :

  $ ffmpeg -i in.mp4 -c:v h264_qsv -global_quality 10 -look_ahead 1 out.mp4
  
  
  
  
  
  ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.11) 20160609
  
    configuration: --enable-libmfx
  
    libavutil      56. 22.100 / 56. 22.100
  
    libavcodec     58. 35.100 / 58. 35.100
  
    libavformat    58. 20.100 / 58. 20.100
  
    libavdevice    58.  5.100 / 58.  5.100
  
    libavfilter     7. 40.101 /  7. 40.101
  
    libswscale      5.  3.100 /  5.  3.100
  
    libswresample   3.  3.100 /  3.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2019-06-04T19:06:40.000000Z
  
    Duration: 00:04:03.07, start: 0.000000, bitrate: 408 kb/s
  
      Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x360 [SAR 1:1 DAR 16:9], 310 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        creation_time   : 2019-06-04T19:06:40.000000Z
  
        handler_name    : ISO Media file produced by Google Inc. Created on: 06/04/2019.
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 95 kb/s (default)
  
      Metadata:
  
        creation_time   : 2019-06-04T19:06:40.000000Z
  
        handler_name    : ISO Media file produced by Google Inc. Created on: 06/04/2019.
  
  File 'out.mp4' already exists. Overwrite ? [y/N] y
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_qsv))
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  
  
  
  
  [h264_qsv @ 0x3b30a00] Error initializing an internal MFX session: unsupported (-3)
  
  Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
  
  Conversion failed!

  What am I missing ?

  Thank you very much !

• ffmpeg - stream image and audio input

  30 octobre 2017, par Chad

  Goal

  Using a Raspberry Pi, stream audio in and use a static image as the video input thru ffmpeg over RTMP to a Cloud video provider (DaCast in this instance)

  Setup

  • Raspberry Pi 3 Model B
  • USB Audio Device (Sabrent USB External Stereo Sound Adapter)
  • Ubuntu MATE 16.04.2 (Xenial)
  • ffmpeg version 3.2-2+rpi1 xenial1.7 (I can post what is configured with the build, if needed)

  Question

  So far, I have figured out the right setting to stream the Raspberry Pi Camera v2 with the audio in. But can’t seem to get it right to replace the video input with a static image. This is that command :

  ffmpeg -f alsa -ac 1 -i plughw:1,0 -f v4l2 -s 1920x1080 -r 30 -input_format h264 -i /dev/video0 -vcodec copy -preset veryfast -r 15 -g 30 -b:v 64k -ar 44100 -threads 6 -b:a 96k -bufsize 3000k -f flv rtmp://streaming_server_url

  How can I replace the video input and replace with an image (or short video with no audio) ?