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• Solid FFMPEG in background worker fails on user pc

  17 février 2015, par jon783

  I’m using Solid FFPEG to rip out individual frames from a video, I’m using this to ’play’ the video (so it rips out each frame). I’m using a background worker to keep the UI responsive. Running on my PC I have no problems, but on the test PC it will not display the frames, I get the below error from the background workers RunWorkerCompleted method.

  System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'CAVEditLib.ICAVConverter'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{59C19DEF-02ED-44CD-BFD8-2FD09DBDC9F9}' failed due to the following error: Error loading type library/DLL. (Exception from HRESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY)) at System.StubHelpers.StubHelpers.GetCOMIPFromRCW(Object objSrc, IntPtr pCPCMD, IntPtr& ppTarget, Boolean& pfNeedsRelease)
  
     at CAVEditLib.ICAVConverter.get_AVPrope()
  
     at RoutePlotter.VideoManager.UpdateAllFrames(Decimal frontNumericValue, Decimal backNumericValue, Decimal leftNumericValue, Decimal rightNumericValue)
  
     at RoutePlotter.MainForm.backgroundWorker_DoWork(Object sender, DoWorkEventArgs e)
  
     at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)
  
     at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)

  The cavEditLib.dll file seems to be registered on the Test PC, but the background worker won’t work.

  Thanks fro any help.

• libavformat : Improve ff_configure_buffers_for_index for excessive deltas

  21 mars 2023, par Martin Storsjö

  libavformat : Improve ff_configure_buffers_for_index for excessive deltas
  Previously, the ff_configure_buffers_for_index function had
  
  upper sanity limits of 16 MB (1<<24) for buffer_size and
  
  8 MB (1<<23) for short_seek_threshold.
  However, if the index contained entries with a much larger
  
  delta, setting pos_delta to a value larger than the sanity
  
  limit, we would end up not increasing the buffer size at all.
  Instead, ignore the individual deltas that are excessive, but
  
  increase the buffer size based on the deltas that are below the
  
  sanity limit.
  Only count deltas that are below 1<<23, 8 MB ; pos_delta gets doubled
  
  before setting the buffer size - this matches the previous maximum
  
  buffer size of 1<<24, 16 MB.
  This can happen e.g. with a mov file with some tracks containing
  
  some samples that belong in the start of the file, at the end of
  
  the mdat, while the rest of the file is mostly reasonably interleaved ;
  
  previously those samples caused the maximum pos_delta to skyrocket,
  
  skipping any buffer size enlargement.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] libavformat/seek.c

• lavf : Remove codec_tag from dashenc and smoothstreamingenc

  30 juin 2017, par Martin Storsjö

  lavf : Remove codec_tag from dashenc and smoothstreamingenc
  Currently, the tags enforced and set on the segmenter muxer level
  
  mismatch what the mp4/ismv muxer uses (since 713efb2c0d013).
  Skip the codec_tag altogether here, to let the user (try to) set
  
  whichever codec/tag is preferred ; the individual chained muxer will
  
  reject invalid codecs anyway.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/dashenc.c
  • [DBH] libavformat/smoothstreamingenc.c