https://bugs.winehq.org/show_bug.cgi?id=22533
--- Comment #8 from Gethyn ThomasQuail xylem2020@gmail.com --- Hello all, I believe I have found the library that causes this bug. One of the VB related libraries (comdlg32.dll) seems to have something unimplemented relating to AVI playback. When you copy this library from a trusted Windows install, place it in the same folder as hl.exe, and add it to the library list as "Native" in winecfg, the AVIs behave exactly as they do on Windows. In fact, Wine normally plays AVIs through the menu that should not actually play and this fixes that. Many modders, and even Valve, used junk AVIs to not have an animated title but Wine plays them through the menu when it shouldn't. I do not know more than that, so I hope someone who knows what their doing can fix this bug.