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• Concat two mp4 files with MP4Box error : Bad Parameter [on hold]

  6 février 2014, par user3279646

  I'm trying to concat two mp4 files. But I get an error : Bad Parameter

  Can someone help me with this problem ?

  I'm using de debian packages. On a previously version it worked fine. I moved from a old debian version to the new one and I also had to change the ffmpeg to avconv which I use to create these mp4 files. I also had to change the audio codec to '-acodec aac -strict experimental'

  Kind Regards,
  Marcel

      MP4Box -force-cat -cat conv1-1391608417314.mp4 -add conv1-1391608417345.mp4 -new output.mp4
  
      IsoMedia import - track ID 1 - Video (size 384 x 288)
  
      Error importing conv1-1391608417345.mp4: Bad Parameter

  ---

      MP4Box -info conv1-1391608417314.mp4
  
      Movie Info 
  
      Timescale 1000 - Duration 00:00:23.985
  
      Fragmented File no - 2 track(s)
  
      File Brand isom - version 512
  
      Created: UNKNOWN DATE
  
      File has root IOD (9 bytes)
  
      Scene PL 0xff - Graphics PL 0xff - OD PL 0xff
  
      Visual PL: Not part of MPEG-4 Visual profiles (0xfe)
  
      Audio PL: Not part of MPEG-4 audio profiles (0xfe)
  
      No streams included in root OD
  
  
  
      iTunes Info:
  
      Encoder Software: Lavf53.21.1
  
  
  
      Track # 1 Info - TrackID 1 - TimeScale 1000 - Duration 00:00:23.985
  
      Media Info: Language "Undetermined" - Type "vide:avc1" - 23988 samples
  
      Visual Track layout: x=0 y=0 width=384 height=288
  
      MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21
  
      AVC/H264 Video - Visual Size 384 x 288
  
      AVC Info: 1 SPS - 1 PPS - Profile High @ Level 4.2
  
      NAL Unit length bits: 32
  
      Self-synchronized
  
  
  
      Track # 2 Info - TrackID 2 - TimeScale 44100 - Duration 00:00:23.962
  
      Media Info: Language "Undetermined" - Type "soun:mp4a" - 1032 samples
  
      MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40
  
      MPEG-4 Audio MPEG-4 Audio AAC LC - 2 Channel(s) - SampleRate 44100
  
      Synchronized on stream 1
  
      Alternate Group ID 1

  ---

      MP4Box -version
  
      MP4Box - GPAC version 0.5.0-rev
  
      GPAC Copyright: (c) Jean Le Feuvre 2000-2005
  
      (c) ENST 2005-200X
  
      GPAC Configuration: --build=x86_64-linux-gnu --prefix=/usr --includedir=${prefix}/include --mandir=${prefix}/share/man --infodir=${prefix}/share/info --sysconfdir=/etc --localstatedir=/var --libdir=${prefix}/lib/x86_64-linux-gnu --libexecdir=${prefix}/lib/x86_64-linux-gnu --disable-maintainer-mode --disable-dependency-tracking --prefix=/usr --mandir=${prefix}/share/man --libdir=lib/x86_64-linux-gnu --extra-cflags='-Wall -fPIC -DPIC -I/usr/include/mozjs -DXP_UNIX' --enable-joystick --enable-debug --disable-ssl
  
      Features: GPAC_HAS_JPEG GPAC_HAS_PNG

• how to save h264 stream into .264 file

  6 mars 2015, par user3547405

  I’m using nginx-rtmp-module build hls server, when I play it on safari, it does not shows image,then i use this command ffmpeg -i rtmp://192.168.4.213/hls/testH264 -c copy -map 0 -f segment -segment_list playlist.m3u8 -segment_time 5 output%03d.ts, it shows missing picture in access unit with size 28184,so i think maybe the raw h264 stream has some problem,then i directly save the h264 stream into .264 file,but when i play the .264 file with vlc,the screen is fuzzy,help

• Reading video files with OpenCV VideoCapture

  3 avril 2014, par Dan Nixon

  I am having trouble being able top open any video files in OpenCV besides those encoded in MJPEG.

  I have installed OpenCV using this script (which should compile OpenCV with support for ffmpeg) and an testing using the sample provided here.

  When running with a h264 encoded video I get :

  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x123ed80] multiple edit list entries, a/v desync might occur, patch welcome
  
  [h264 @ 0x12465e0] A non-intra slice in an IDR NAL unit.
  
  [h264 @ 0x12465e0] decode_slice_header error
  
  Could not open the output video for write: test.mp4

  When running with an MPEG-2 encoded video I get :

  [mpegts @ 0x1e92d80] PES packet size mismatch
  
  [mpegts @ 0x1e92d80] PES packet size mismatch
  
  [mpegts @ 0x1e92d80] max_analyze_duration reached
  
  [mpegts @ 0x1e92d80] PES packet size mismatch
  
  Could not open the output video for write: test.mpeg

  I am running x64 Ubuntu 12.04.

  EDIT : I tried OpenCV 2.4.8 on a Ubuntu 13.10 x86 VM, ffmpeg works fine, however the sample code still fails, this time with the following error :

  [h264 @ 0x849ff40] A non-intra slice in an IDR NAL unit.
  
  [h264 @ 0x849ff40] decode_slice_header error
  
  Could not find encoder for codec id 28: Encoder not foundOpenCV Error: Unsupported format or combination of formats (Gstreamer Opencv backend doesn't support this codec acutally.) in CvVideoWriter_GStreamer::open, file /home/dan/Install-OpenCV/Ubuntu/2.4/OpenCV/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp, line 505
  
  terminate called after throwing an instance of 'cv::Exception'
  
    what():  /home/dan/Install-OpenCV/Ubuntu/2.4/OpenCV/opencv-2.4.8/modules/highgui/src/cap_gstreamer.cpp:505: error: (-210) Gstreamer Opencv backend doesn't support this codec acutally. in function CvVideoWriter_GStreamer::open