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  • Write webcam video with avconv

    31 juillet 2012, par Jones

    Have problem to write video avi with avconv

    I try using

    avconv -v debug -f video4linux2 -i /dev/video1 frontal.avi

    but video not correct. I see this line [video4linux2 @ 0x8100b00] The v4l2 frame is 8160 bytes, but 614400 bytes are expected and I don't identify options to correct this.

    Output of debug

    avconv version 0.8.3-4:0.8.3-0ubuntu0.12.04.1, Copyright (c) 2000-2012 the Libav developers
    
  built on Jun 12 2012 16:37:58 with gcc 4.6.3
    
  configuration: --extra-version='4:0.8.3-0ubuntu0.12.04.1' --arch=i386 --prefix=/usr --libdir=/usr/lib/i386-linux-gnu --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --enable-runtime-cpudetect --enable-libfreetype --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i386-linux-gnu/i686/cmov --cpu=i686 --enable-shared --disable-static
    
  libavutil    51. 22. 1 / 51. 22. 1
    
  libavcodec   53. 35. 0 / 53. 35. 0
    
  libavformat  53. 21. 0 / 53. 21. 0
    
  libavdevice  53.  2. 0 / 53.  2. 0
    
  libavfilter   2. 15. 0 /  2. 15. 0
    
  libswscale    2.  1. 0 /  2.  1. 0
    
  libpostproc  52.  0. 0 / 52.  0. 0
    
[video4linux2 @ 0x8100b00] [3]Capabilities: 4000001
    
[video4linux2 @ 0x8100b00] Querying the device for the current frame size
    
[video4linux2 @ 0x8100b00] Setting frame size to 640x480
    
[video4linux2 @ 0x8100b00] The V4L2 driver set input_id: 0, input: Camera 1
    
[video4linux2 @ 0x8100b00] The v4l2 frame is 8160 bytes, but 614400 bytes are expected
    
[rawvideo @ 0x8102920] err{or,}_recognition separate: 1; 1
    
[rawvideo @ 0x8102920] err{or,}_recognition combined: 1; 1
    
[video4linux2 @ 0x8100b00] Estimating duration from bitrate, this may be inaccurate
    
Input #0, video4linux2, from '/dev/video1':
    
  Duration: N/A, bitrate: 147456 kb/s
    
    Stream #0.0, 0, 1/1000000: Video: rawvideo, yuyv422, 640x480, 1/30, 147456 k
    
File 'frontal.avi' already exists. Overwrite ? [y/N] y
    
Incompatible pixel format 'yuyv422' for codec 'mpeg4', auto-selecting format 'yu
    
[buffer @ 0x81020c0] w:640 h:480 pixfmt:yuyv422
    
[avsink @ 0x81022a0] auto-inserting filter 'auto-inserted scaler 0' between the
    
[scale @ 0x81026e0] w:640 h:480 fmt:yuyv422 -> w:640 h:480 fmt:yuv420p flags:0x4
    
[mpeg4 @ 0x81019a0] err{or,}_recognition separate: 1; 1
    
[mpeg4 @ 0x81019a0] err{or,}_recognition combined: 1; 1
    
[mpeg4 @ 0x81019a0] detected 1 logical cores
    
[mpeg4 @ 0x81019a0] Unsupported bit depth: 0
    
[rawvideo @ 0x8102920] err{or,}_recognition separate: 1; 1
    
[rawvideo @ 0x8102920] err{or,}_recognition combined: 1; 1
    
Output #0, avi, to 'frontal.avi':
    
  Metadata:
    
    ISFT            : Lavf53.21.0
    
    Stream #0.0, 0, 1/30: Video: mpeg4, yuv420p, 640x480, 1/30, q=2-31, 200 kb/s

  • VLC command line : RTSP to mp4 file (video + audio)

    8 février 2016, par Dmitriy Gerashenko

    Win 7 x64.

    When I watch this link in VLC player all is fine :

    rtsp ://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov

    When I try to capture link to file and to display :

    • There is video without sound on display.
    • Created file is not playable.

    Command :

    vlc.exe -vvv "rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov" --sout="#transcode{venc=ffmpeg,vcodec=mp4v,vfilter=canvas{width=800,height=600},aenc=ffmpeg{strict=-2},acodec=mp4a}:duplicate{dst=display,dst=standard{access=file,mux=mp4,dst=video.mp4}"

    There are some errors in log, for example : MPEG4GenericRTPSource Warning: Unknown or unsupported "mode": AAC-hbr. Is it cause of my problems ? How to solve my issue ?

    Complete log (from VLCJ) :

    cd C:\Users\gda\Documents\NetBeansProjects\Video; "JAVA_HOME=C:\\Program Files (x86)\\Java\\jdk1.8.0_71" cmd /c "\"\"C:\\Users\\gda\\AppData\\Roaming\\NetBeans\\8.0.2\\maven\\bin\\mvn.bat\" -Dexec.args=\"-classpath %classpath ru.cherezweb.app.video.Video\" -Dexec.executable=\"C:\\Program Files (x86)\\Java\\jdk1.8.0_71\\bin\\java.exe\" -Dmaven.ext.class.path=C:\\Users\\gda\\AppData\\Roaming\\NetBeans\\8.0.2\\maven-nblib\\netbeans-eventspy.jar -Dfile.encoding=UTF-8 process-classes org.codehaus.mojo:exec-maven-plugin:1.2.1:exec\""
    
Scanning for projects...
    

    
------------------------------------------------------------------------
    
Building Video 1.0-SNAPSHOT
    
------------------------------------------------------------------------
    

    
--- maven-resources-plugin:2.5:resources (default-resources) @ Video ---
    
[debug] execute contextualize
    
Using 'UTF-8' encoding to copy filtered resources.
    
skip non existing resourceDirectory C:\Users\gda\Documents\NetBeansProjects\Video\src\main\resources
    

    
--- maven-compiler-plugin:2.3.2:compile (default-compile) @ Video ---
    
Nothing to compile - all classes are up to date
    

    
--- exec-maven-plugin:1.2.1:exec (default-cli) @ Video ---
    
20:37:29.097 [main] INFO  uk.co.caprica.vlcj.Info - vlcj: 3.10.1
    
20:37:29.101 [main] INFO  uk.co.caprica.vlcj.Info - java: 1.8.0_71 Oracle Corporation
    
20:37:29.101 [main] INFO  uk.co.caprica.vlcj.Info - java home: C:\Program Files (x86)\Java\jdk1.8.0_71\jre
    
20:37:29.101 [main] INFO  uk.co.caprica.vlcj.Info - os: Windows 10 10.0 x86
    
20:37:29.103 [main] DEBUG u.c.c.vlcj.discovery.NativeDiscovery - discover()
    
20:37:29.103 [main] DEBUG u.c.c.vlcj.discovery.NativeDiscovery - jnaLibraryPath=null
    
20:37:29.103 [main] DEBUG u.c.c.vlcj.discovery.NativeDiscovery - discoveryStrategy=uk.co.caprica.vlcj.discovery.linux.DefaultLinuxNativeDiscoveryStrategy@176c05c
    
20:37:29.104 [main] DEBUG u.c.c.vlcj.discovery.NativeDiscovery - supported=false
    
20:37:29.104 [main] DEBUG u.c.c.vlcj.discovery.NativeDiscovery - discoveryStrategy=uk.co.caprica.vlcj.discovery.windows.DefaultWindowsNativeDiscoveryStrategy@1eb6432
    
20:37:29.104 [main] DEBUG u.c.c.vlcj.discovery.NativeDiscovery - supported=true
    
20:37:29.104 [main] DEBUG u.c.c.v.d.AbstractNativeDiscoveryStrategy - discover()
    
20:37:29.105 [main] DEBUG u.c.c.v.r.windows.WindowsRuntimeUtil - getVlcInstallDir()
    
20:37:29.430 [main] DEBUG u.c.c.v.d.AbstractNativeDiscoveryStrategy - directoryNames=[C:\Program Files (x86)\VideoLAN\VLC, C:\Users\gda\Documents\NetBeansProjects\Video, C:\Program Files\Broadcom\Broadcom 802.11 Network Adapter, C:\Program Files (x86)\Intel\iCLS Client\, C:\Program Files\Intel\iCLS Client\, C:\PROGRAMDATA\ORACLE\JAVA\JAVAPATH, C:\Windows\SYSTEM32, C:\Windows, C:\Windows\SYSTEM32\WBEM, C:\Windows\SYSTEM32\WINDOWSPOWERSHELL\V1.0\, C:\PROGRAM FILES\INTEL\INTEL(R) MANAGEMENT ENGINE COMPONENTS\DAL, C:\PROGRAM FILES\INTEL\INTEL(R) MANAGEMENT ENGINE COMPONENTS\IPT, C:\PROGRAM FILES (X86)\INTEL\INTEL(R) MANAGEMENT ENGINE COMPONENTS\DAL, C:\PROGRAM FILES (X86)\INTEL\INTEL(R) MANAGEMENT ENGINE COMPONENTS\IPT, C:\Program Files\Intel\Intel(R) Management Engine Components\DAL, C:\Program Files\Intel\Intel(R) Management Engine Components\IPT, C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL, C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT, C:\Program Files\WIDCOMM\Bluetooth Software\, C:\Program Files\WIDCOMM\Bluetooth Software\syswow64, C:\Program Files\TortoiseSVN\bin, C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common, C:\Program Files\OpenVPN\bin, C:\WINDOWS\system32, C:\WINDOWS, C:\WINDOWS\System32\Wbem, C:\WINDOWS\System32\WindowsPowerShell\v1.0\, C:\Program Files\TortoiseGit\bin, C:\Program Files (x86)\Skype\Phone\]
    
20:37:29.430 [main] DEBUG u.c.c.v.d.AbstractNativeDiscoveryStrategy - directoryName=C:\Program Files (x86)\VideoLAN\VLC
    
20:37:29.430 [main] DEBUG u.c.c.v.d.AbstractNativeDiscoveryStrategy - Matched 'libvlc.dll' in 'C:\Program Files (x86)\VideoLAN\VLC'
    
20:37:29.430 [main] DEBUG u.c.c.v.d.AbstractNativeDiscoveryStrategy - Matched 'libvlccore.dll' in 'C:\Program Files (x86)\VideoLAN\VLC'
    
20:37:29.430 [main] DEBUG u.c.c.v.d.AbstractNativeDiscoveryStrategy - Matched all required files
    
20:37:29.430 [main] DEBUG u.c.c.v.d.AbstractNativeDiscoveryStrategy - result=C:\Program Files (x86)\VideoLAN\VLC
    
20:37:29.430 [main] DEBUG u.c.c.vlcj.discovery.NativeDiscovery - path=C:\Program Files (x86)\VideoLAN\VLC
    
20:37:29.431 [main] INFO  u.c.c.vlcj.discovery.NativeDiscovery - Discovery found libvlc at 'C:\Program Files (x86)\VideoLAN\VLC'
    
true
    
2.2.1 Terry Pratchett (Weatherwax)
    
20:37:29.490 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - initX=null
    
20:37:29.494 [main] INFO  u.c.c.vlcj.binding.LibVlcFactory - vlc: 2.2.1 Terry Pratchett (Weatherwax), changeset 2.2.1-0-ga425c42
    
20:37:29.494 [main] INFO  u.c.c.vlcj.binding.LibVlcFactory - libvlc: C:\Program Files (x86)\VideoLAN\VLC\libvlc.dll
    
20:37:29.494 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - MediaPlayerFactory(libvlc=Proxy interface to Native Library ,libvlcArgs=[])
    
20:37:29.494 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - jna.library.path=null
    
20:37:29.494 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - VLC_PLUGIN_PATH=null
    
20:37:29.529 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - instance=native@0x1195650 (uk.co.caprica.vlcj.binding.internal.libvlc_instance_t@1195650)
    
20:37:29.529 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - equalizerAvailable=true
    
20:37:29.529 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - createEqualizerBandFrequencies()
    
20:37:29.529 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - numBands=10
    
20:37:29.530 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - result=[31.25, 62.5, 125.0, 250.0, 500.0, 1000.0, 2000.0, 4000.0, 8000.0, 16000.0]
    
20:37:29.530 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - createEqualizerPresetNames()
    
20:37:29.530 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - numPresets=18
    
20:37:29.530 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - result=[Flat, Classical, Club, Dance, Full bass, Full bass and treble, Full treble, Headphones, Large Hall, Live, Party, Pop, Reggae, Rock, Ska, Soft, Soft rock, Techno]
    
20:37:29.530 [main] DEBUG u.c.c.vlcj.player.MediaPlayerFactory - newHeadlessMediaPlayer()
    
20:37:29.538 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - DefaultMediaPlayer(libvlc=Proxy interface to Native Library , instance=native@0x1195650 (uk.co.caprica.vlcj.binding.internal.libvlc_instance_t@1195650))
    
20:37:29.538 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - createInstance()
    
20:37:29.543 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - mediaPlayerInstance=native@0x16853ac4 (uk.co.caprica.vlcj.binding.internal.libvlc_media_player_t@16853ac4)
    
20:37:29.544 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - mediaPlayerEventManager=native@0x16878818 (uk.co.caprica.vlcj.binding.internal.libvlc_event_manager_t@16878818)
    
20:37:29.544 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - registerEventListener()
    
20:37:29.546 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerMediaChanged
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerNothingSpecial
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerOpening
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerBuffering
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerPlaying
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.567 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerPaused
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerStopped
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerForward
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerBackward
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerEndReached
    
20:37:29.568 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerEncounteredError
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerTimeChanged
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerPositionChanged
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerSeekableChanged
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerPausableChanged
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerTitleChanged
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.569 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerSnapshotTaken
    
20:37:29.570 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.570 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerLengthChanged
    
20:37:29.570 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.570 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerVout
    
20:37:29.570 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.570 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaPlayerScrambledChanged
    
20:37:29.570 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.572 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - playMedia(mrl=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov,mediaOptions=[:sout=#transcode{venc=ffmpeg,vcodec=mp4v,vfilter=canvas{width=800,height=600},aenc=ffmpeg{strict=-2},acodec=mp4a}:duplicate{dst=display,dst=standard{access=file,mux=mp4,dst=yahoo.m4v}}])
    
20:37:29.573 [main] DEBUG u.c.c.v.player.MediaResourceLocator - encodeMrl(mrl=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov)
    
20:37:29.573 [main] DEBUG u.c.c.v.player.MediaResourceLocator - MRL does not contain any Unicode characters
    
20:37:29.573 [main] DEBUG u.c.c.v.player.MediaResourceLocator - result=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov
    
20:37:29.574 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - playMedia(media=SimpleMedia[mrl=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov,mediaOptions=[Ljava.lang.String;@17c74e5])
    
20:37:29.574 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - prepareMedia(media=SimpleMedia[mrl=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov,mediaOptions=[Ljava.lang.String;@17c74e5])
    
20:37:29.574 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - setMedia(media=SimpleMedia[mrl=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov,mediaOptions=[Ljava.lang.String;@17c74e5])
    
20:37:29.574 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - createMediaInstance(media=SimpleMedia[mrl=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov,mediaOptions=[Ljava.lang.String;@17c74e5])
    
20:37:29.574 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - Treating mrl as a location
    
20:37:29.574 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - mediaInstance=native@0x16876500 (uk.co.caprica.vlcj.binding.internal.libvlc_media_t@16876500)
    
20:37:29.574 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - mediaOption=:sout=#transcode{venc=ffmpeg,vcodec=mp4v,vfilter=canvas{width=800,height=600},aenc=ffmpeg{strict=-2},acodec=mp4a}:duplicate{dst=display,dst=standard{access=file,mux=mp4,dst=yahoo.m4v}}
    
20:37:29.575 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - registerMediaEventListener()
    
20:37:29.575 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaMetaChanged
    
20:37:29.575 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.575 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaSubItemAdded
    
20:37:29.575 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaDurationChanged
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaParsedChanged
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaFreed
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaStateChanged
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - event=libvlc_MediaSubItemTreeAdded
    
20:37:29.576 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=0
    
20:37:29.585 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - mrl(mediaInstance=native@0x16876500 (uk.co.caprica.vlcj.binding.internal.libvlc_media_t@16876500))
    
20:37:29.587 [pool-2-thread-1] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - mediaChanged(mediaPlayer=uk.co.caprica.vlcj.player.headless.DefaultHeadlessMediaPlayer@1727f27,media=native@0x16876500 (uk.co.caprica.vlcj.binding.internal.libvlc_media_t@16876500),mrl=rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov)
    
20:37:29.588 [pool-2-thread-1] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - Raising event for new media
    
20:37:29.588 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - result=true
    
20:37:29.588 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - play()
    
20:37:29.593 [main] DEBUG u.c.c.vlcj.player.DefaultMediaPlayer - after play
    
MPEG4GenericRTPSource Warning: Unknown or unsupported "mode": AAC-hbr
    
[1682c9cc] core input error: ES_OUT_RESET_PCR called
    
[16f79744] core decoder error: cannot continue streaming due to errors
    
[1682c9cc] core input error: ES_OUT_RESET_PCR called
    
[h264 @ 1702ba80] decode_slice_header error
    
[h264 @ 1702ba80] decode_slice_header error
    
[16828134] stream_out_transcode stream out: input interval 41666 (base 2)
    
[16828134] stream_out_transcode stream out: output interval 41666 (base 1)

  • Decode audio using libavcodec and play using libAO ?

    21 mars 2012, par Ashika Umanga Umagiliya

    I use following code snippet to decode audio files (tested with MP3,WAV,WMV).

    But when it plays the audio , it just gives static sounds and crashes time to time.
    Any hints on what i am doing wrong here ?

    #include 
    
#include 
    
#include 
    
#include 
    

    

    
extern "C" {
    
#include "libavutil/mathematics.h"
    
#include "libavformat/avformat.h"
    
#include "libswscale/swscale.h"
    
#include <ao></ao>ao.h>
    

    
}
    

    
void die(const char *msg)
    
{
    
    fprintf(stderr,"%s\n",msg);
    
    exit(1);
    
}
    

    
int main(int argc, char **argv)
    
{
    

    
    const char* input_filename=argv[1];
    

    
    //avcodec_register_all();
    
    av_register_all();
    
    //av_ini
    

    
    AVFormatContext* container=avformat_alloc_context();
    
    if(avformat_open_input(&amp;container,input_filename,NULL,NULL)&lt;0){
    
        die("Could not open file");
    
    }
    

    
    if(av_find_stream_info(container)&lt;0){
    
        die("Could not find file info");
    
    }
    
    av_dump_format(container,0,input_filename,false);
    

    
    int stream_id=-1;
    
    int i;
    
    for(i=0;inb_streams;i++){
    
        if(container->streams[i]->codec->codec_type==AVMEDIA_TYPE_AUDIO){
    
            stream_id=i;
    
            break;
    
        }
    
    }
    
    if(stream_id==-1){
    
        die("Could not find Audio Stream");
    
    }
    

    
    AVDictionary *metadata=container->metadata;
    

    
    AVCodecContext *ctx=container->streams[stream_id]->codec;
    
    AVCodec *codec=avcodec_find_decoder(ctx->codec_id);
    

    
    if(codec==NULL){
    
        die("cannot find codec!");
    
    }
    

    
    if(avcodec_open(ctx,codec)&lt;0){
    
        die("Codec cannot be found");
    
    }
    

    
    //ctx=avcodec_alloc_context3(codec);
    

    
    //initialize AO lib
    
    ao_initialize();
    

    
    int driver=ao_default_driver_id();
    

    
    ao_sample_format sformat;
    
    sformat.bits=16;
    
    sformat.channels=2;
    
    sformat.rate=44100;
    
    sformat.byte_format=AO_FMT_NATIVE;
    
    sformat.matrix=0;
    

    
    ao_device *adevice=ao_open_live(driver,&amp;sformat,NULL);
    
    //end of init AO LIB
    

    
    AVPacket packet;
    
    av_init_packet(&amp;packet);
    

    
    AVFrame *frame=avcodec_alloc_frame();
    

    
    int buffer_size=AVCODEC_MAX_AUDIO_FRAME_SIZE;
    
    uint8_t buffer[buffer_size];
    
    packet.data=buffer;
    
    packet.size =buffer_size;
    

    

    

    
    int len;
    
    int frameFinished=0;
    
    while(av_read_frame(container,&amp;packet)>=0)
    
    {
    

    
        if(packet.stream_index==stream_id){
    
            //printf("Audio Frame read  \n");
    
            int len=avcodec_decode_audio4(ctx,frame,&amp;frameFinished,&amp;packet);
    
            //frame->
    
            if(frameFinished){
    
                //printf("Finished reading Frame %d %d\n",packet.size,len);
    
                ao_play(adevice, (char*)frame->data, len);
    
            }
    

    
        }
    

    

    
    }
    

    
    av_close_input_file(container);
    
    ao_shutdown();
    
    return 0;
    
}

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