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• ffmpeg : getting video from http page streamed to youtube

  28 novembre 2014, par M-T-A

  I’m trying to configure ffmpeg to stream to youtube from ubuntu machine.

  I have my wifi camera streaming with format ’video/x-ms-asf’ on local http page.

  Then I use these commands in attempt to stream to youtube

  VBR="2500k" # Bitrate 
  
  FPS="20" # FPS 
  
  QUAL="medium" #ffmpeg quality
  
  YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2" # URL base
  
  
  
  SOURCE="http://192.168.9.XX/videostream.asf?user=admin&pwd=***" # Source of video
  
  KEY="KEY HERE" # youtube event key
  
  
  
  ffmpeg \
  
  -i "$SOURCE"  \
  
  -vcodec copy -pix_fmt yuv420p -preset $QUAL -r $FPS -g $(($FPS * 2)) -b:v $VBR \
  
   -ar 44100 -threads 6 -qscale 3 -b:a 712000 -bufsize 512k \
  
  -f flv "$YOUTUBE_URL/$KEY" 

  I get this output

  moha@moha:~/Desktop$ sh start_stream_xmas.sh 
  
  ffmpeg version git-2014-11-28-ea38e5a Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Nov 28 2014 11:06:47 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
  
    libavutil      54. 15.100 / 54. 15.100
  
    libavcodec     56. 13.100 / 56. 13.100
  
    libavformat    56. 15.101 / 56. 15.101
  
    libavdevice    56.  3.100 / 56.  3.100
  
    libavfilter     5.  2.103 /  5.  2.103
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [mjpeg @ 0xb0c0a60] ignoring invalid SAR: 0/0
  
  Guessed Channel Layout for  Input Stream #0.1 : mono
  
  Input #0, asf, from 'http://192.168.9.66/videostream.asf?user=admin&pwd=':
  
    Duration: N/A, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 640x480, 25 tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, 1 channels, s16p, 32 kb/s
  
  Please use -q:a or -q:v, -qscale is ambiguous
  
  Output #0, flv, to 'rtmp://a.rtmp.youtube.com/live2/createnetxmas.kpjg-5fdg-qp1c-4bvd':
  
    Metadata:
  
      encoder         : Lavf56.15.101
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p, 640x480, q=2-31, 2500 kb/s, 1k tbn, 20 tbc
  
      Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 44100 Hz, mono, s16p, 712 kb/s
  
      Metadata:
  
        encoder         : Lavc56.13.100 libmp3lame
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (adpcm_ima_wav (native) -> mp3 (libmp3lame))
  
  Press [q] to stop, [?] for help
  
  Multiple frames in a packet from stream 1
  
  frame=   12 fps=0.0 q=-1.0 size=     882kB time=00:00:06.34 bitrate=1138.6kbits/frame=   13 fps= 13 q=-1.0 size=     953kB time=00:00:06.83 bitrate=1142.0kbits/frame=   14 fps=9.1 q=-1.0 size=    1029kB time=00:00:07.30 bitrate=1153.5kbits/frame=   15 fps=7.3 q=-1.0 size=    1104kB time=00:00:07.77 bitrate=1162.7kbits/frame=   16 fps=6.1 q=-1.0 size=    1181kB time=00:00:08.42 bitrate=1148.4kbits/frame=   17 fps=5.3 q=-1.0 size=    1256kB time=00:00:09.07 bitrate=1133.4kbits/frame=   18 fps=4.8 q=-1.0 size=    1325kB time=00:00:09.70 bitrate=1119.0kbits/frame=   19 fps=4.4 q=-1.0 size=    1403kB time=00:00:10.19 bitrate=1127.3kbits/frame=   20 fps=4.1 q=-1.0 size=    1482kB time=00:00:10.66 bitrate=1138.3kbits/frame=   21 fps=3.9 q=-1.0 size=    1556kB time=00:00:11.31 bitrate=1126.0kbits/moha@moha:~/Desktop$ 

  Suddenly the streaming stops and the terminal hangs. I’m not sure why. Is it because the video has no audio in streaming ?

• FFmpegMediaPlayer : findLibrary returned null

  8 août 2015, par IceJOKER

  I use https://github.com/wseemann/FFmpegMediaPlayer in my applicaton, but some Adndroid device throw exception :

  java.lang.ExceptionInInitializerError
  
  at ru.mypackage.PlayService.initPlayer(PlayService.java:74)
  
  at ru.mypackage.PlayService.onCreate(PlayService.java:68)
  
  at android.app.ActivityThread.handleCreateService(ActivityThread.java:1949)
  
  at android.app.ActivityThread.access$2500(ActivityThread.java:117)
  
  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:989)
  
  at android.os.Handler.dispatchMessage(Handler.java:99)
  
  at android.os.Looper.loop(Looper.java:130)
  
  at android.app.ActivityThread.main(ActivityThread.java:3687)
  
  at java.lang.reflect.Method.invokeNative(Native Method)
  
  at java.lang.reflect.Method.invoke(Method.java:507)
  
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
  
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
  
  at dalvik.system.NativeStart.main(Native Method)
  
  Caused by: java.lang.UnsatisfiedLinkError: Couldn't load avutil: findLibrary returned null
  
  at java.lang.Runtime.loadLibrary(Runtime.java:429)
  
  at java.lang.System.loadLibrary(System.java:554)
  
  at wseemann.media.FFmpegMediaPlayer.<clinit>(FFmpegMediaPlayer.java:620)
  
  ... 13 more
  
  </clinit>

  My project :
  

  [![enter image description here][3]][3]

  Can somebody explain me what’s wrong there ?
  On my device and some other device the app working nice, but on some device (for example : Galaxy Ace (GT-S5830i) Android 2.3.3 - 2.3.7) it throw the exception.

  p.s. about "lib" prefix I understood ( http://developer.android.com/intl/ru/reference/java/lang/System.html#mapLibraryName(java.lang.String) )

• FFmpeg audio channel rematrix (5.1 to stereo)

  29 octobre 2014, par Flock Dawson

  I’ve got a (very large !) Apple ProRes 422 file with 16ch audio. To be able to use it on a less powerful computer, I’d like to convert it to a standard MP4 file (h264 video codec, stereo audio). The original file has 16 channels of audio, however, and FFmpeg gives an error when I try to convert it (’Rematrix is needed’). How do I do rematrixing of audio channels ? Are there additional steps needed ?

  This is the FFmpeg command I used :

  ffmpeg -y -i Capture0000.mov -vcodec libx264 -vb 2000k -pix_fmt yuv420p -coder 0 -profile:v baseline -acodec libfaac -ab 128k /tmp/out.mp4

  This is the FFmpeg output :

  ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers
  
        built on May  8 2014 14:17:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
        configuration: --prefix=/usr/local/ffmpeg_build --extra-cflags=-I/usr/local/ffmpeg_build/include --extra-ldflags=-L/usr/local/ffmpeg_build/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --enable-libxvid --enable-libfaac
  
        libavutil      52. 81.100 / 52. 81.100
  
        libavcodec     55. 60.103 / 55. 60.103
  
        libavformat    55. 37.102 / 55. 37.102
  
        libavdevice    55. 13.101 / 55. 13.101
  
        libavfilter     4.  5.100 /  4.  5.100
  
        libswscale      2.  6.100 /  2.  6.100
  
        libswresample   0. 18.100 /  0. 18.100
  
        libpostproc    52.  3.100 / 52.  3.100
  
      Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0000.mov':
  
        Metadata:
  
          creation_time   : 2014-08-17 18:30:31
  
        Duration: 01:01:22.52, start: 0.000000, bitrate: 202001 kb/s
  
          Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 183513 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)
  
          Metadata:
  
            creation_time   : 2014-08-17 18:30:31
  
            handler_name    : Apple Alias Data Handler
  
            encoder         : Apple ProRes 422 (HQ)
  
          Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s (default)
  
          Metadata:
  
            creation_time   : 2014-08-17 18:30:31
  
            handler_name    : Apple Alias Data Handler
  
      [auto-inserted resampler 0 @ 0x3943da0] [SWR @ 0x39441a0] Rematrix is needed between 16 channels and 5.1 but there is not enough information to do it
  
      [auto-inserted resampler 0 @ 0x3943da0] Failed to configure output pad on auto-inserted resampler 0
  
      Error opening filters!

  This is the FFprobe output :

  ffprobe version 2.2.git Copyright (c) 2007-2014 the FFmpeg developers
  
    built on May  8 2014 14:17:45 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --prefix=/usr/local/ffmpeg_build --extra-cflags=-I/usr/local/ffmpeg_build/include --extra-ldflags=-L/usr/local/ffmpeg_build/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-x11grab --enable-libxvid --enable-libfaac
  
    libavutil      52. 81.100 / 52. 81.100
  
    libavcodec     55. 60.103 / 55. 60.103
  
    libavformat    55. 37.102 / 55. 37.102
  
    libavdevice    55. 13.101 / 55. 13.101
  
    libavfilter     4.  5.100 /  4.  5.100
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0000.mov':
  
    Metadata:
  
      creation_time   : 2014-08-17 18:30:31
  
    Duration: 01:01:22.52, start: 0.000000, bitrate: 202001 kb/s
  
      Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 183513 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 2500 tbn, 2500 tbc (default)
  
      Metadata:
  
        creation_time   : 2014-08-17 18:30:31
  
        handler_name    : Apple Alias Data Handler
  
        encoder         : Apple ProRes 422 (HQ)
  
      Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s (default)
  
      Metadata:
  
        creation_time   : 2014-08-17 18:30:31
  
        handler_name    : Apple Alias Data Handler