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• FFMPEG on Android java application

  11 juillet 2015, par Kim T

  I’m prototyping a Hybrid app using Cordova : https://cordova.apache.org. Also using this plugin : https://github.com/jbavari/cordova-plugin-video-editor

  The plugin renders a video into new formats using FFMPEG. The specific piece of code which does this is here :

  https://github.com/jbavari/cordova-plugin-video-editor/blob/master/src/android/VideoEditor.java

  al.add("ffmpeg");
  
  al.add("-i");
  
  al.add(videoSrcPath);
  
  String[] ffmpegCommand = al.toArray(new String[al.size()]);
  
  vk.run(ffmpegCommand, workFolder, appContext);
  
  Log.d(TAG, Arrays.toString(ffmpegCommand));

  When logged out in Android Studio with variables it is :

  [ffmpeg, -y, -i, /storage/emulated/0/DCIM/Camera/20150709_172753.mp4, -strict, experimental, -s, 320x320, -r, 24, -vcodec, libx264, -preset, ultrafast, -b, 2097152, -ac, 1, -ar, 22050, -t, 2.0, /storage/emulated/0/Movies/HelloWorld/VID_render-1436477283566.mp4]

  This is working perfectly.

  I want to modify this command to allow multiple videos, and other options. Here is an FFMPEG terminal command i’ve tested on my machine working :

  ./ffmpeg -i a.mp4 -i b.mp4 -filter_complex "[0:0] [0:1] [1:0] [1:1] concat=n=2:v=1:a=1 [v] [a]" -map "[v]" -map "[a]" -loglevel debug -strict -2 output.mp4

  I’ve attempted to modify the java code but this fails :

  al.add("ffmpeg");
  
  al.add("-i");
  
  al.add(videoSrcPath); 
  
  al.add("-i");
  
  al.add(videoSrcPath2);
  
  al.add("-filter_complex");
  
  al.add("[0:0] [0:1] [1:0] [1:1] concat=n=2:v=1:a=1 [v] [a]");
  
  al.add("-map");
  
  al.add("[v]");
  
  al.add("-map");
  
  al.add("[a]");
  
  al.add("-strict");
  
  al.add("-2");

  This is the failing command when logged out with variables :

  [ffmpeg, -y, -i, /storage/emulated/0/DCIM/Camera/20150709_175137.mp4, -i, /storage/emulated/0/Movies/HelloWorld/20150709_234321.mp4, -filter_complex, [0:0] [0:1] [1:0] [1:1] concat=n=2:v=1:a=1 [v] [a], -map, [v], -map, [a], -strict, -2, experimental, -s, 320x320, -r, 24, -vcodec, libx264, -preset, ultrafast, -b, 2097152, -ac, 1, -ar, 22050, -t, 2.0, /storage/emulated/0/Movies/HelloWorld/VID_render-1436478706526.mp4]

  I try to use the logging feature of FFMPEG, I can’t get it to return back to the Java Log, which really restricts what I can debug :(

  al.add("-loglevel");
  
  al.add("debug");

  Any help would be greatly appreciated !

• Revision 74ded4863e : Enable conditional skip path in rd_pick_intra_sby_mode These speed-up features

  4 décembre 2014, par Jingning Han

  Changed Paths :
   Modify /vp9/encoder/vp9_rdopt.c

  
   Modify /vp9/encoder/vp9_speed_features.c

  
  
  Enable conditional skip path in rd_pick_intra_sby_mode

  These speed-up features for key frame coding are only turned on
  in the settings of hybrid non-RD and RD mode decision. It provides
  about 20% speed-up to the hybrid key frame coding at the expense
  of certain compression performance loss. For vidyo1, the key frame
  coding statistics are changed
  9838F, 35.020 dB, 61677 us -> 9920F, 34.834 dB, 47556 us

  Overall rtc set compression performance is down by -0.257%.

  Change-Id : I0025447fda26bb7855e982955642b5f55d71b51f

• FFMPEG - How to record multiple RTMP streams into multiple files

  11 juillet 2014, par user3146313

  I tried the following, but it does not work.

  ffmpeg -i rtmp://83.229.210.89/RAZTV/BTVraztv1 -map 0 -b:v 900k -vcodec libx264 -acodec aac -b:a 256k -strict -2 -t 3600 /media/TV_1T_3T_6/ffmpegtest/ort.mp4 -i rtmp://mirtv.cdnvideo.ru/mirtv-live/mirtv600.sdp -map 1 -b:v 900k -vcodec libx4 -acodec aac -b:a 256k -strict -2 -t 3600 /media/TV_1T_3T_6/ffmpegtest/mir.mp4 -i rtmp://chanson.cdnvideo.ru/chanson-live/shansontv.sdp -map 2 -b:v 900k -vcodec libx264 -acodec aac -b:a 256k -strict -2 -t 3600 /media/TV_1T_3T_6/ffmpegtest/shansontv.mp4 -i rtmp://83.229.210.89:1935/TROTV/BTVtro0 -map 3 -b:v 900k -vcodec libx264 -acodec aac -b:a 256k -strict -2 -t 3600 /media/TV_1T_3T_6/ffmpegtest/tro.mp4

  Looks like it hangs on a second stream and no movement. S.O.S. Please help.
  I have 4 stream URLs. I want them to be recording together at the same time.

  With one ffmpeg command:
  
  I want: rtmp://83.229.210.89/RAZTV/BTVraztv1 to record into file: /media/TV_1T_3T_6/ffmpegtest/ort.mp4
  
  
  
  I want: rtmp://mirtv.cdnvideo.ru/mirtv-live/mirtv600.sdp to record into file: /media/TV_1T_3T_6/ffmpegtest/mir.mp4 
  
  
  
  I want: rtmp://chanson.cdnvideo.ru/chanson-live/shansontv.sdp to record into file: /media/TV_1T_3T_6/ffmpegtest/shansontv.mp4
  
  
  
  I want: rtmp://83.229.210.89:1935/TROTV/BTVtro0  to record into file: /media/TV_1T_3T_6/ffmpegtest/tro.mp4 

  The log that I get right now is :

  ffmpeg version 2.2.4 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jul  6 2014 21:42:17 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab --enable-libvpx --enable-libmp3lame
  
    libavutil      52. 66.100 / 52. 66.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  2.100 /  4.  2.100
  
    libswscale      2.  5.102 /  2.  5.102
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [flv @ 0x24981c0] Stream discovered after head already parsed
  
  Input #0, flv, from 'rtmp://83.229.210.89/RAZTV/BTVraztv1':
  
    Metadata:
  
      Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
  
      displayWidth    : 720
  
      displayHeight   : 576
  
      fps             : 25
  
      profile         : 
  
      level           : 
  
    Duration: 00:00:00.00, start: 1826.816000, bitrate: N/A
  
      Stream #0:0: Video: h264 (High), yuv420p, 720x576 [SAR 64:45 DAR 16:9], 699 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc
  
      Stream #0:1: Audio: aac, 48000 Hz, stereo, fltp, 128 kb/s
  
      Stream #0:2: Data: none
  
  [flv @ 0x261c7e0] Stream discovered after head already parsed
  
  [flv @ 0x261c7e0] negative cts, previous timestamps might be wrong
  
      Last message repeated 8 times
  
  Input #1, flv, from 'rtmp://mirtv.cdnvideo.ru/mirtv-live/mirtv600.sdp':
  
    Metadata:
  
      author          : 
  
      copyright       : 
  
      description     : 
  
      keywords        : 
  
      rating          : 
  
      title           : 
  
      presetname      : Custom
  
      creationdate    : Fri Jul 11 03:34:37 2014
  
                      : 
  
      videodevice     : AVerMedia Hybrid TV Video Capture
  
      avclevel        : 30
  
      avcprofile      : 66
  
      videokeyframe_frequency: 5
  
      audiodevice     : ?8=. 2E>4 (#AB@>9AB2> A ?>445@6
  
      audiochannels   : 1
  
      audioinputvolume: 100
  
    Duration: N/A, start: 0.000000, bitrate: 1038 kb/s
  
      Stream #1:0: Video: h264 (Baseline), yuv420p(tv), 720x576 [SAR 1:1 DAR 5:4], 972 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc
  
      Stream #1:1: Audio: mp3, 44100 Hz, mono, s16p, 65 kb/s
  
      Stream #1:2: Data: none