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Thread: Playing WEBM in IrfanView

  1. #11

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    Quote Originally Posted by Sinbios View Post
    I found a workaround that at least works for me.

    Launch IrfanView and open any video file. The video will be blank. Pause it and leave it open.

    Now launch another instance of IrfanView and open the video you want to play, it will play normally.

    I think maybe the first instance takes up some broken video pathway, and the second falls back to some alternate pathway that works fine.

    Bhikkhu Pesala, would appreciate if you could share this information in https://irfanview-forum.de/showthread.php?t=11689 and relay it to Irfan if possible, maybe it will help identify the issue.
    this is still an issue and opening a 2nd instance in fact fixed it, I never had this issue until recently and I think a certain windows update or nvidia driver may have caused it. I tried fresh installs of irfanview 32/64 bit and reinstalling all my drivers and trying various different codec packs, only opening a 2nd instance of irfanview managed to fix the black screen with audio issue (happens when viewing any video format: mp4, avi, webm, etc). If anyone found an alternative fix pls share

  2. #12
    Power User j7n's Avatar
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    IrfanView 4.51
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    Maybe there is an incompatibility with the hardware accelerated YUV upsampling, and converting the picture to RGB32 in the decoder could be a workaround. Make sure the video decoder is either Ffdshow or LAV Filters, and uncheck all other codes for output except RGB32 (no yv12, no yuy2). Simpler codecs don't have such an option. This used to solve blocking reds and inability to have multiple videos open simultaneously in full contrast in older systems. Only the first video would get the good pathwау w/acceleration. I don't have Windows 10 and I'm only guessing.

  3. #13
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    Excuse the bump but have anyone found a solution other than opening two instances workaround? I recently did a fresh install of Windows 10 and found the need to replace the built in image viewer and the only issue so far has been playing webms. I've installed k-lite codec pack and tinkered with the rendering in irfanview options but so far I've had to rely on video players to play webms. Tried everything mentioned to the best of my ability but can't get it to work in current year either, is it the same for everyone else?

  4. #14

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    Same here. In fact, i had to stop using irfanview ages ago because of this problem, in hopes that in newer versions (this was about one year ago) things will be fixed. What is my surprise that one year later, things are exactly the same and nothing was fixed. Is this problem even being investigated? or should we forget about irfanview for good? seriously guys... i loved the fact that i could make a slideshow with video files really quick, but a) i got tired of having to open two instances and do the quick workaroud just to play a quick video file and b) this "fix" doesnt work when making a slideshow because the program blocks the instance.
    Last edited by tantalus; 06.05.2020 at 01:47 AM.

  5. #15
    Moderator Enterprise User Bhikkhu Pesala's Avatar
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    As noted in this other thread it is not a bug in IrfanView.

    Quote Originally Posted by Irfan Skiljan
    Sorry, video problems are NEVER IrfanView problems

    IrfanView sends the file to Windows, Windows looks for the codec and starts it => the codec does everything.
    => IrfanView has no idea what happens.

    This is either a problem in Win10 update or in the MP4 codec.
    Please use another video player like VLC.

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