I was wondering if anyone here might relate to the following problem.
When I attempt to use current VLC 3.0.0 nightlies to play certain videos the main window does two things: it starts flickering (between what seems solid black or solid white and whatever it the window was showing before—such as a playlist—with no video—or audio—output); and it also grows (it gets a little bigger, then slightly smaller, and so on until it fills the screen). Sometimes I can stop playback; others I have to force-quit.
Steps to reproduce:
- Download a recent VLC nightly, starting with build 3.0.0-20170518-0445.
- Visit the Kodi samples page and download the first entry of section 3 (which links to <https://drive.google.com/file/d/0BwxFVk ... sp=sharing>.)
- Try and play the video.
Actual result: There is no video or audio; the VLC main window flickers and grows. It might be necessary to force-quit the application.
From my initial testing, affected videos showing the described behaviour are encoded using H.264, where the decoded format identified by VLC is "Planar 4:2:0 YUV)"; it does not happen for 10-bit encodes (format: "Planar 4:2:0 YUV 10-bit LE"). I have also experienced the flickering in ‘MPEG-4’ videos though in this case the window tries to shrink (perhaps simply because they are low-resolution 3GPP YouTube videos). Limitedly tested encodings which do not show the behaviour are VC-1, H.265, VP9, and ‘XVID’.
Building from source, the problem seems to rear its head with VLC revision 2.2.0-git-12552-g1664bf2d55 (commit 1664bf2d55d7239b54e87933ba75959a5bac4d77). Revision 2.2.0-git-12551-gc45ece9738 (the previous commit) seems to work fine.[*] Since the commit is OpenGL-related, perhaps not all Mac plaftforms experience it. My setup is the following:
MacBook Pro (Retina, Mid 2012) running macOS 10.12.5, which carries the following:
- CPU: Intel Core i7-3615QM
- Integrated graphics: Intel HD Graphics 4000 (Vendor, Device ID, Revision ID: 0x8086, 0x0166, 0x0009)
- Dedicated graphics: NVIDIA GeForce GT 650M (Vendor, Device ID, Revision ID: 0x10de, 0x0fd5, 0x00a2)
Thanks to anyone who can test and report whether they can reproduce or not the issue on their hardware and OS X version. Cheers.
[*] There are actually some problems with at least a couple of the sample videos from the Kodi page (the 1080i ones from section 3: [1, 2]) which have troble with the video and show it green, but that seems to have started earlier, with the 20170421-0445 3.0.0 nightly I believe, and might have already been fixed (though not as of nightly 3.0.0-20170517-0445).
