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• FFMPEG Android Camera Streaming to RTMP

  2 février 2017, par Omer Abbas

  I need help for streaming android Camera using FFMPEG to a RTMP Server. I have compiled FFMPEG for android as a shared library. Everything from FFMPGEG side is working perfectly fine. I have tried to stream a already existed video file to RTMP and its working great. Then i have used Camera and write rawvideo to a file and stream it to RTMP server while writing camera rawvideo to the file, It’s also working but the issue is file size keep increasing. I have read about MediaRecorder LocalSocket that can stream data to ffmpeg as Unix Domain name local socket. I have used MediaRecorder Sample source of android sample https://github.com/googlesamples/android-MediaRecorder modified MediaRecorder to use local socket

  receiver = new LocalSocket();
  
      try {
  
  
  
          localSocketServer = new LocalServerSocket("camera2rtsp");
  
  
  
          // FileDescriptor the Camera can send to
  
          sender = localSocketServer.accept();
  
          sender.setReceiveBufferSize(500000);
  
          sender.setSendBufferSize(500000);
  
  
  
      } catch (IOException e1) {
  
          e1.printStackTrace();
  
          super.onResume();
  
          finish();
  
          //return;
  
      }
  
  
  
      mMediaRecorder.setOutputFile(sender.getFileDescriptor());

  Tried to access this socket with ffmpeg command, But it’s failed with the error unix ://camera2rtsp : no directory or file found.

  ffmpeg -i unix ://camera2rtsp -vcodec libx264 -f flv rtmp ://server

  so i tried ParcelFileDescriptor pipe

  pipe = getPipe();
  
  ParcelFileDescriptor parcelWrite  = new ParcelFileDescriptor(pipe[1]);
  
  mMediaRecorder.setOutputFile(parcelWrite.getFileDescriptor());

  With command

  "ffmpeg -re -r 30 -f rawvideo -i pipe :"+ pipe[0].getfd() +" -vcodec libx264 -f flv rtmp ://server"

  But it also not working, Seems like ffmpeg trying to read empty pipe and giving a warning of Size of Stream#0:0

  Also MediaRecorder with setOutputFile as ParcelFileDescriptor is giving error "E/MediaRecorder : start failed : -2147483648" in Galaxy S7 but working in a motorolla Phone with Kitkat.

  I might have been using Pipe or Socket Incorrectly Please if someone have any idea or experience of using ffmpeg stream with android camera please help me.

  I have figured out that MediaRecorder encode in MP4 format which is not seekable or streamable format because of headers or meta data.

  So i read a tutorial http://www.oodlestechnologies.com/blogs/Stream-video-from-camera-preview-to-wowza-server-in-Android this tutorial shows we can write raw video to a file and can pass this file to ffmpeg. It’s working great, But the issue is file size it increasing. So now my question is can i pass camera raw video to ffmpeg with ParcelFileDescriptor Pipe or LocalSocket ?

  Code :

  File f = new  File(Environment.getExternalStorageDirectory()+"/test.data");
  
                      if(!f.exists()){
  
                          f.createNewFile();
  
                      }
  
  
  
                      OutputStream outStream = new FileOutputStream(write);
  
  
  
                      Camera.Parameters parameters = mCamera.getParameters();
  
                      int imageFormat = parameters.getPreviewFormat();
  
                      if (imageFormat == ImageFormat.NV21) {
  
                          Camera.Size previewSize = parameters.getPreviewSize();
  
                          int frameWidth = previewSize.width;
  
                          int frameHeight = previewSize.height;
  
  
  
                          Rect rect = new Rect(0, 0, frameWidth, frameHeight);
  
                          YuvImage img = new YuvImage(arg0, ImageFormat.NV21, frameWidth, frameHeight, null);
  
  
  
                          outStream.write(arg0);
  
                          outStream.flush();
  
  
  
                          //img.compressToJpeg(rect, 50, processIn);
  
                      }

• avconv : Saving MP4 is Taking Hours

  4 septembre 2015, par PeregrineStudios

  not entirely sure if I should post this on askubuntu or stackoverflow. Posted on askubuntu and not getting any answers. I’m hoping I can find an answer here.

  I’m setting up a website where users can upload videos and share them. I’m using avconv to reduce the video size and save it twice, once as an mp4 and again as a webm.

  Uploading a .MOV from a phone, the video conversion is quick and manageable.

  Uploading a .mp4 from a Samsung Galaxy S3, the video conversion to webm is also quick. But, the conversion to another mp4 takes FOREVER - literally hours. Why ? Is anyone able to shed light on the problem ?

  My avconv output is below.

  avconv -i /var/www/dev_jackpine/ottawa2017/temp_videos/37a949071acaee714dae829ca8df9b29.mp4 -c:v libx264 -vf transpose=1,transpose=1,transpose=1 -s 640x480 /var/www/dev_jackpine/ottawa2017/spinnies/test.mp4
  
  avconv version 0.8.17-4:0.8.17-0ubuntu0.12.04.1, Copyright (c) 2000-2014 the Libav developers
  
  built on Mar 16 2015 13:26:50 with gcc 4.6.3
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/var/www/dev_jackpine/ottawa2017/temp_videos/37a949071acaee714dae829ca8df9b29.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      creation_time   : 2015-09-04 15:08:21
  
  Duration: 00:00:07.76, start: 0.000000, bitrate: 11756 kb/s
  
  Stream #0.0(eng): Video: h264 (Constrained Baseline), yuv420p, 1280x720, 11967 kb/s, 29.81 fps, 90k tbr, 90k tbn, 180k tbc
  
  Metadata:
  
    creation_time   : 2015-09-04 15:08:21
  
  Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 119 kb/s
  
  Metadata:
  
    creation_time   : 2015-09-04 15:08:21
  
  File '/var/www/dev_jackpine/ottawa2017/spinnies/test.mp4' already exists. Overwrite ? [y/N] y
  
  [buffer @ 0xc3d580] w:1280 h:720 pixfmt:yuv420p
  
  [scale @ 0xc3dac0] w:1280 h:720 fmt:yuv420p -> w:640 h:480 fmt:yuv420p flags:0x4
  
  [transpose @ 0xc3e280] w:640 h:480 dir:1 -> w:480 h:640 rotation:clockwise vflip:0
  
  [transpose @ 0xc3e7c0] w:480 h:640 dir:1 -> w:640 h:480 rotation:clockwise vflip:0
  
  [transpose @ 0xc3ede0] w:640 h:480 dir:1 -> w:480 h:640 rotation:clockwise vflip:0
  
  [libx264 @ 0xc2b100] MB rate (108000000) > level limit (983040)
  
  [libx264 @ 0xc2b100] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2 AVX
  
  [libx264 @ 0xc2b100] profile Main, level 5.1
  
  [libx264 @ 0xc2b100] 264 - core 120 r2151 a3f4407 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=1 b_bias=0 direct=1 weightb=0 open_gop=1 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.25 aq=1:1.00
  
  Output #0, mp4, to '/var/www/dev_jackpine/ottawa2017/spinnies/test.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      creation_time   : 2015-09-04 15:08:21
  
      encoder         : Lavf53.21.1
  
      Stream #0.0(eng): Video: libx264, yuv420p, 480x640, q=-1--1, 180k tbn, 90k tbc
  
      Metadata:
  
        creation_time   : 2015-09-04 15:08:21
  
      Stream #0.1(eng): Audio: libvo_aacenc, 48000 Hz, stereo, s16, 200 kb/s
  
      Metadata:
  
        creation_time   : 2015-09-04 15:08:21
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
  
  Press ctrl-c to stop encoding

  Here’s an example frame output :

  frame=124398 fps=142 q=33.0 size=   16885kB time=1.38 bitrate=100110.2kbits/s dup=124356 drop=0

  I’ve had the process running the whole time I’ve been writing this question, and so far it’s done... 22 frames.

  What could be the problem ?

• lavc : Make AVPacket.duration int64, and deprecate convergence_duration

  26 septembre 2015, par wm4

  lavc : Make AVPacket.duration int64, and deprecate convergence_duration
  Note that convergence_duration had another meaning, one which was in
  
  practice never used. The only real use for it was a 64 bit replacement
  
  for the duration field. It’s better just to make duration 64 bits, and
  
  to get rid of it.
  Signed-off-by : Vittorio Giovara <vittorio.giovara@gmail.com>
  

  • [DBH] doc/APIchanges
  • [DBH] libavcodec/audio_frame_queue.c
  • [DBH] libavcodec/audio_frame_queue.h
  • [DBH] libavcodec/avcodec.h
  • [DBH] libavcodec/avpacket.c
  • [DBH] libavcodec/parser.c
  • [DBH] libavcodec/version.h
  • [DBH] libavformat/framecrcenc.c
  • [DBH] libavformat/matroskadec.c
  • [DBH] libavformat/matroskaenc.c
  • [DBH] libavformat/md5enc.c
  • [DBH] libavformat/mov.c
  • [DBH] libavformat/r3d.c
  • [DBH] libavformat/utils.c