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• FFmpeg error when trying to stream file into it

  15 décembre 2015, par nadermx

  I’m trying to put a stream into a ffmpeg pipe.

  The issue I am having is that when I send the data to ffmpeg I get a error 127

  It also shows /bin/sh: 2: -acodec: not found

  Here is the console log I’m running via python

  from subprocess import Popen, PIPE
  
  from flask import Flask, stream_with_context, request, Response
  
  from signal import signal, SIGPIPE, SIG_DFL
  
  signal(SIGPIPE,SIG_DFL)
  
  
  
  def console(cmd, add_newlines=False):
  
      p = Popen(cmd, shell=True, stdout=PIPE)
  
      while True:
  
          data = p.stdout.read()
  
          if add_newlines:
  
              data += '\n'
  
          yield data
  
  
  
          p.poll();
  
          if isinstance(p.returncode, int):
  
              if p.returncode > 0:
  
                  # return code was non zero, an error?
  
                  print 'error:', p.returncode
  
  
  
              break
  
  
  
          sleep(2)

  And here is the actual route I am running the application in.

  @app.route('/large.mp3')
  
  def generate_large_mp3():
  
      url = 'https://www.youtube.com/watch?v=zGEiJ44K3Oo'
  
      result = ''.join(data.strip() for data in console('youtube-dl --simulate --get-url %s' % url))
  
      mp3 = console('sudo ffmpeg -i %s -acodec libmp3lame  -f mp3 -' % result, add_newlines=True)
  
  
  
      return Response(stream_with_context(mp3), mimetype='video/mp3')

  Here is the error output

  /bin/sh: 2: https://r13---sn-ab5l6nes.googlevideo.com/videoplayback?id=cc6122278e0adcea: not found
  
  /bin/sh: 2: -acodec: not found
  
  ffmpeg version git-2015-12-10-3652dd5 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
    configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-openssl --enable-nonfree --enable-version3 --enable-gnutls
  
    libavutil      55. 10.100 / 55. 10.100
  
    libavcodec     57. 17.100 / 57. 17.100
  
    libavformat    57. 19.100 / 57. 19.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 20.100 /  6. 20.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [https @ 0x384d0a0] HTTP error 403 Forbidden
  
  https://r13---sn-ab5l6nes.googlevideo.com/videoplayback?id=cc6122278e0adcea: Server returned 403 Forbidden (access denied)
  
  127.0.0.1 - - [15/Dec/2015 00:55:59] "GET /large.mp3 HTTP/1.1" 200 -
  
  error: 127

  I have tried many different urls and all of them end up with the same issue.
  I have also tried installing every dependency I have been able to find and still no luck

• blur an mp4 video for website background

  14 décembre 2015, par Mansi

  I am putting a video in the background of my web page. I want to blur the background for which I tried to put the following attribute in video tag :

   <video>
  
  </video>

  the video runs very slow due to blurring the background within HTML.
  So, now I am trying to blur the original video. I tried to use ffmpeg (here) :

  ffmpeg -i input.avi -vf "boxblur=enable='between(t,start,end)'" -codec:a copy output.avi

  But the filter used in ffmpeg seems to be deprecated. I have tried few filters of "avconv", but no filter seems to "blur" the video.
  Please let me know if there is any other command line tool which I can use for this purpose or even if I am missing any filter in ffmpeg or avconv.

  UPDATE : Console output for ffmpeg :

  ffmpeg -i output.mp4 -vf "boxblur=enable='between(t,0,15)'" -codec:a copy output1.mp4
  
  ffmpeg version 2.8.3 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --disable-yasm
  
    libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      creation_time   : 2015-04-08 13:38:10
  
      encoder         : Lavf54.20.4
  
    Duration: 00:00:29.40, start: 0.000000, bitrate: 1909 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1024x1024 [SAR 16:9 DAR 16:9], 1905 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-04-08 13:38:10
  
        handler_name    : VideoHandler
  
  [AVFilterGraph @ 0x1db5140] No such filter: 'boxblur'

• correctly encode .mov file for various browsers and devices

  7 décembre 2015, par khinester

  i have the following template, which uses node-blade that is similar to jade

  .show-for-medium-up
  
    -var poster_url = '//' + settings.cloudFrontDomain + '/images/poster/2015_2016.jpeg'
  
    .fullwidth
  
      .about-page
  
        video.video-js.vjs-default-skin.vjs-playing.vjs-big-play-centered(id="home" poster=poster_url)
  
          source(src="//#{settings.cloudFrontDomain}/assets/videos/home/winter_2015/SD_720.webm" type='video/webm')
  
          source(src="//#{settings.cloudFrontDomain}/assets/videos/home/winter_2015/SD_720.mp4" type='video/mp4')
  
          source(src="//#{settings.cloudFrontDomain}/assets/videos/home/winter_2015/SD_720.ogg" type='video/ogg')
  
          source(src="//#{settings.cloudFrontDomain}/assets/videos/home/winter_2015/SD_360.m4v" type='video/mp4')
  
      :javascript
  
        videojs("home", {
  
            preload: 'auto',
  
            autoplay: true,
  
            loop: true,
  
            fluid: true,
  
            aspectRatio: '16:9',
  
            controls: false
  
          });

  i have encoded the videos using ffmpeg using the following commands

   ffmpeg -i $s.mov -vcodec libvpx -acodec libvorbis -aq 5 -ac 2 -qmax 25 -b 614400 -s 1280x720 $s-SD_720.webm
  
   ffmpeg -i $s.mov -c:v libtheora -c:a libvorbis -q:v 6 -q:a 5 $s-SD_720.ogg
  
   ffmpeg -i $s.mov -vcodec h264 -acodec mp2 $s-SD_720.mp4

  the original video is

  ffprobe ../HD.mov 
  
  ffprobe version N-76639-g58d32c0 Copyright (c) 2007-2015 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
    configuration: --prefix=/home/khine/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/khine/ffmpeg_build/include --extra-ldflags=-L/home/khine/ffmpeg_build/lib --bindir=/home/khine/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  
    libavutil      55.  5.100 / 55.  5.100
  
    libavcodec     57. 15.100 / 57. 15.100
  
    libavformat    57. 14.100 / 57. 14.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 15.100 /  6. 15.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '../HD.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 537199360
  
      compatible_brands: qt  
  
      creation_time   : 2015-12-02 22:35:26
  
    Duration: 00:01:19.20, start: 0.000000, bitrate: 55745 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 55733 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 50 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-12-02 22:35:26
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : H.264
  
        timecode        : 00:03:02:19
  
      Stream #0:1(eng): Data: none (tmcd / 0x64636D74) (default)
  
      Metadata:
  
        creation_time   : 2015-12-02 23:44:32
  
        handler_name    : Apple Alias Data Handler
  
        timecode        : 00:03:02:19

  what is the correct way to reduce the size to use on the web and also for use on mobile devices without flash.

  any advice much appreciated