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Thread: internal player displays video sideways for portrait-mode mp4 (rotation=90 ignored?)

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    Default internal player displays video sideways for portrait-mode mp4 (rotation=90 ignored?)

    Running IrfanView v4.53 with the Video option set to "internal player", and using the LAV Filters v0.74.1 with all default settings. Video clips are played inside IrfanView's main window, as expected, however MP4 clips shot in portrait mode get played sideways i.e. rotated 90 degrees counterclockwise.

    Looking at one such file (copied from an Android phone, if that matters), the MP4 metadata shows width=1920, height=1080 and rotation=90. Those look right, but it appears that the playback in IrfanView ignores the rotation= value and displays the video sideways, instead. The same MP4 file plays in the correct orientation using MPC-HC configured to use the exact same LAV Filters. Both MPC-HC and IrfanView work the same between Win7 and Win10 i.e. MPC-HC plays the clip upright on both OSs, while IrfanView plays it sideways.

    Here's hoping this glitch can be fixed in a future build, and thanks again.

    Liviu

    P.S. FWIW this reminded me of a similarly-looking bug in MPC-HC which was fixed back in their v1.7.11 (https://trac.mpc-hc.org/wiki/Changelog/1.7.11) "fixed: ticket #2202, automatically rotate MP4/MOV/FLV files when the rotation info is available". The discussion around that ticket is at https://trac.mpc-hc.org/ticket/2202 and seems to point to the handling of the rotation flag in the metadata. I don't know if the two issues are in fact related at the code level, but I'll leave the links here in case any of that might be relevant to IrfanView.

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    After following up with Irfan directly, his reply was essentially "can't fix / won't fix". Disappointing as it may be, this closes the case.

  3. #3
    Moderator Enterprise User Bhikkhu Pesala's Avatar
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    Thanks for the feedback.

  4. #4

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    I have the exact same problem. I have been using Irfanview for more than a decade. Great tool, love it! But why can't this video auto rotate issue be solved??

  5. #5
    Moderator Enterprise User Bhikkhu Pesala's Avatar
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    Quote Originally Posted by kaja69 View Post
    I have the exact same problem. I have been using Irfanview for more than a decade. Great tool, love it! But why can't this video auto rotate issue be solved??
    As noted above, Irfan Skiljan said that he cannot or will not fix it. Often that means that the bug is in the file or in the application that produced it. Not something, over which, he has any control.

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