Recherche avancée

Sur d’autres sites (2776)

• Anomalie #3388 (Fermé) : Cache partie privée

  6 novembre 2015, par marcimat ☺☮☯♫

  Ok, sur conseil adapté de b_b, plutôt que ajaxReload, forcer le post du formulaire sans ajax.
  Appliqué par r22503

• 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.

• Glitchy mp4 File saved with Matplotlib Animation via ffmpeg

  9 janvier 2024, par Jacob Ivanov

  I am attempting to save an .mp4 file using matplotlib.animation to output some simulation results. The relevent section is as follows :

  


  ANI = FuncAnimation(fig, update, init_func = lambda : None, frames = range(0, 21300, 50))
ANI.save("[removed]/anim/v6 256 unforced 0.02.mp4", dpi = 600, fps = 30, writer = 'ffmpeg')


  


  However, it appears that there is some issue in the produced .mp4 file, as when I use macOS Quicktime to view the file, it pauses on certain frames, and restarts later on. It appears to consistently pause on the same frame a few seconds in. In order to check if Quicktime was the problem, I opened some random .mp4 files I found in a family group chat, and did not have this issue.

  


  I also tried viewing this .mp4 file with VLC, which had no issue, and played without any glitches. The Slack media viewer built into the app pauses similar to Quicktime.

  


  The following are all relevant versions :

  


  

  • macOS : 14.2.1 (23C71)

  


  • Python : 3.10.9 via Homebrew

  


  • Matplotlib : 3.6.2

  


  • ffmpeg : 6.1.1

  


  


  If it would help, I can also provide the .mp4 file itself, but I'm not quite sure how to upload it. I will be happy to provide any additional information as well.

  


  Unfortunately, I'm not very familiar with video rendering, but I would appreciate any help anyone could provide. Thank you in advance !