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• Merge commit 'd31f46e1999fab31be46f0cbce0546a5aa49fe48'

  5 mai 2017, par Clément Bœsch

  Merge commit 'd31f46e1999fab31be46f0cbce0546a5aa49fe48'
  * commit 'd31f46e1999fab31be46f0cbce0546a5aa49fe48' :
  
    cmdutils : update copyright year to 2017
  This commit is a noop, see d800d48fc67208819c2a4ae5eb214ca5e3ad7e82
  Merged-by : Clément Bœsch <cboesch@gopro.com>
  

• VLC - Could someone assist me into improving latency in streaming to web based app ?

  19 janvier 2017, par zyeek

  I have been looking for solutions in which I can stream an IP camera’s stream to HTML 5. Currently as is it doesn’t support RTSP so easily.

  I am trying to be able to view the camera’s stream as live as possible. I was hoping someone could help me achieve that. I have been playing with it to get something workable, but at the moment I get a 5s delay stream. It is smooth, but wish to get it hopefully within <1-2s delay if possible.

  My current setup goes from taking my IP camera’s stream in RTSP and converting it to a webm and streaming it to a url, which then I plan on using that to put else where in a web app.

  ---

  What I would like to achieve

  Use a protocol that has low latency with audio was well. Webm was used as test, but I can’t seem to get other commands to get the proper stream to be going.

  I would like to use DASH, but from reading FFMPEG currently doesn’t support it. I was thinking maybe RTMP would be good enough for now, being both low latency and HTTP 5 compatible. I am just unable to figure out how to get FFMPEG to transcode the RTSP to RTMP.

  ---

  SETUP :

  I am using ffserver and ffmpeg. Overall scope : trying to pull IP camera stream and put it on a web app.

  Framework I am use is Meteor JS. So, I am trying to few plugins or outside complex setups as I want to be able to deploy this Meteor app on mobile devices as well. So, I want to stay within the boundaries of what HTML 5 can support.

  My current ffserver setup is ffserver.conf (this was taking from bunch of different place :

  HTTPPort 8090                      # Port to bind the server to
  
  HTTPBindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 10000             # Maximum bandwidth per client
  
                                 # set this high enough to exceed stream bitrate
  
  CustomLog -
  
  
  
  <feed>
  
       File /tmp/feed.ffm
  
       FileMaxSize 100K
  
       ACL allow 127.0.0.1
  
  </feed>
  
  
  
  
  
  <stream>
  
       Format webm
  
       Feed feed.ffm
  
       NoAudio
  
       VideoCodec libvpx
  
       VideoFrameRate 24
  
       VideoBitRate 1024
  
       VideoSize 480x270
  
       VideoBufferSize 1024
  
       AVOptionVideo flags +global_header
  
       StartSendOnKey
  
  </stream>
  
  
  
  <stream>            # Server status URL
  
     Format status
  
     # Only allow local people to get the status
  
     ACL allow localhost
  
  </stream>
  
  
  
  <redirect>    # Just an URL redirect for index
  
     # Redirect index.html to the appropriate site
  
     URL url/
  
  </redirect>

  Works normally :

  ffserver version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
  
    libavutil      55. 34.100 / 55. 34.100
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.100 / 57. 56.100
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  /etc/ffserver.conf:27: Setting default value for video bit rate tolerance = 256000. Use NoDefaults to disable it.
  
  /etc/ffserver.conf:27: Setting default value for video rate control equation = tex^qComp. Use NoDefaults to disable it.
  
  /etc/ffserver.conf:27: Setting default value for video max rate = 2048000. Use NoDefaults to disable it.
  
  Wed Jan 18 17:04:30 2017 FFserver started.

  Now I give life to the feed with ffmpeg. Command I use :

  ffmpeg -vsync 2 -i rtsp://admin:password@192.168.2.165:88/videoMain -map 0 http://localhost:8090/feed.ffm

  which gives the result :

  ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
  
    libavutil      55. 34.100 / 55. 34.100
  
    libavcodec     57. 64.101 / 57. 64.101
  
    libavformat    57. 56.100 / 57. 56.100
  
    libavdevice    57.  1.100 / 57.  1.100
  
    libavfilter     6. 65.100 /  6. 65.100
  
    libavresample   3.  1.  0 /  3.  1.  0
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  Guessed Channel Layout for Input Stream #0.1 : mono
  
  Input #0, rtsp, from 'rtsp://admin:password@192.168.2.165:88/videoMain':
  
    Metadata:
  
      title           : IP Camera Video
  
      comment         : videoMain
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1280x720, 90k tbr, 90k tbn, 180k tbc
  
      Stream #0:1: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
  
  [libvpx @ 0x7fd58184a600] v1.6.0
  
  Output #0, ffm, to 'http://localhost:8090/feed.ffm':
  
    Metadata:
  
      title           : IP Camera Video
  
      comment         : videoMain
  
      creation_time   : now
  
      encoder         : Lavf57.56.100
  
      Stream #0:0: Video: vp8 (libvpx), yuv420p, 480x270, q=-1--1, 1024 kb/s, 90k fps, 1000k tbn, 24 tbc
  
      Metadata:
  
        encoder         : Lavc57.64.101 libvpx
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 8388608 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> vp8 (libvpx))
  
  Press [q] to stop, [?] for help
  
  [rtsp @ 0x7fd581000000] max delay reached. need to consume packet
  
  [rtsp @ 0x7fd581000000] RTP: missed 5 packets
  
  [h264 @ 0x7fd5818ae800] Increasing reorder buffer to 1
  
  frame=  139 fps= 18 q=0.0 Lsize=     440kB time=00:00:09.25 bitrate= 389.7kbits/s speed=1.19x    
  
  video:429kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.663893%

• android ffmpeg concatenate multiple m4a files

  19 janvier 2017, par margie

  I need help in concatenating audio files in android using ffmpeg

  My source of audio files is from recording result (container .m4a, encoder aac).
  When I concat them using ffmpeg, the result file length(duration) is only of the 1st file.

  ie. FileA length = 1:00, FileB length = 0:14. Expected FileResult length = 1:14, but actual result is 1:00).

  I also tried the command I used in desktop ffmpeg and it give the same result.

  This is my command :

   [-i, 
  
  concat:storage/emulated/0/Music/Recordings/REC_20170119_162023.m4a|/storage/emulated/0/Music/Recordings/REC_20170119_162042.m4a, 
  
  -c, 
  
  copy, 
  
  /storage/emulated/0/Music/Recordings/REC_20170119_162047.m4a]

  and the ffmpeg result is :

  D/FFmpeg: onSuccess: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
          built with gcc 4.8 (GCC)
  
          configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
          libavutil      55. 17.103 / 55. 17.103
  
          libavcodec     57. 24.102 / 57. 24.102
  
          libavformat    57. 25.100 / 57. 25.100
  
          libavdevice    57.  0.101 / 57.  0.101
  
          libavfilter     6. 31.100 /  6. 31.100
  
          libswscale      4.  0.100 /  4.  0.100
  
          libswresample   2.  0.101 /  2.  0.101
  
          libpostproc    54.  0.100 / 54.  0.100
  
        [mov,mp4,m4a,3gp,3g2,mj2 @ 0xf58d7000] Found duplicated MOOV Atom. Skipped it
  
        Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'concat:/storage/emulated/0/Music/Recordings/REC_20170119_162023.m4a|/storage/emulated/0/Music/Recordings/REC_20170119_162042.m4a':
  
          Metadata:
  
            com.android.version: 6.0
  
            major_brand     : mp42
  
            minor_version   : 0
  
            creation_time   : 2017-01-19 09:20:30
  
            compatible_brands: isommp42
  
          Duration: 00:00:07.18, start: 0.000000, bitrate: 21 kb/s
  
            Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 10 kb/s (default)
  
            Metadata:
  
              creation_time   : 2017-01-19 09:20:30
  
              handler_name    : SoundHandle
  
        Output #0, ipod, to '/storage/emulated/0/Music/Recordings/REC_20170119_162047.m4a':
  
          Metadata:
  
            com.android.version: 6.0
  
            major_brand     : mp42
  
            minor_version   : 0
  
            compatible_brands: isommp42
  
            encoder         : Lavf57.25.100
  
            Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, 10 kb/s (default)
  
            Metadata:
  
              creation_time   : 2017-01-19 09:20:30
  
              handler_name    : SoundHandle
  
        Stream mapping:
  
          Stream #0:0 -> #0:0 (copy)
  
        Press [q] to stop, [?] for help
  
        size=      11kB time=00:00:07.17 bitrate=  13.1kbits/s speed= 230x    
  
        video:0kB audio:10kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 20.181986%

  also tried this command, but still give the same result

  [-y, -i, /storage/emulated/0/Music/Recordings/REC_20170119_165440.m4a, -i, /storage/emulated/0/Music/Recordings/REC_20170119_165445.m4a, -acodec, aac, /storage/emulated/0/Music/Recordings/REC_20170119_165448.m4a]