I have problems when I play wmv files in Windows 7. I can't get dolby or DTS through SPDIF on my sony reciever. MKV however works fine. . On the same computer I had a Vista installed and had no problems playing WMV files with AC3 and DTS. I used ffdshow and ac3filter in line with media player classic. Now in Windows 7 I installed the same applications and wmv does not come with AC3 or DTS. I spent days now testing, installing different codecs . Are there more people experiencing this problem? I use the x64 windows 7 ultimate. Thanks for the help.
WMV files have 5.1 WMA streams, which can't be passed through, not unless you're AV-Reciever supports WMA. Mine for example doesn't so I only get a stereo signal send to my AVR. MKV however have real AC3/DTS streams which can be passed through to the reciever. Please check your WMV files, because your problem looks like the audio stream is a WMA stream. You can, however, search net net on how to use ffdshow to to convert the WMA stream and to a digital AC3 stream and pass that through. The problem itself is not related to windows 7, as it is the stream which is causing the problem. Get G-Spot to check the WMV file, otherwise try Win7Codecs and MPC-HC and try to convert the stream. All assuming the stream is WMA (I haven't seen a WMV file without a WMA stream for audio, don't know if it's even possible to put another stream then WMA into a WMV file).
tried to change some settings but still the same. If i play a .mmv(hd) file it refuses to use ffdshow or ac3filter. Even if you set it to use. If you disable the audio switcher it outputs nothing. In vista it plays without problem with the standard settings. I can not believe its has nothing to do with windows 7 Keep testing ps: it seems that WM9/VC-1 : uses the Microsoft decoder. but i am unable to change that.
ps: problem is: ac3Filter does not start when playing wmv files. In vista ac3filter starts en decodes it and past it trough spdif. Checked all the settings one by one, same software same settings. So i am 100% sure the problem is w7. use realtek hd drivers.
I'm so glad to see someone else is having the exact problem as I am. I have posted in a few forums, but I get no feedback like no one else has this problem, or they just don't know why it does what it does. My Sony A/V receiver outputs surround sound for all my moves, but no audio for my HD WMV's, and heres the kicker, worked fine in VISTA. Went to Windows 7, my Blu-Ray movies that I converted to WMV, will not play any audio. If I unselect the little tab in the sound settings of my Realtek HDMI setting called 'Custom' to enable AC3, DTS, etc click this box will require a restart. If I disabled this, everything works, but everything is in stereo, and if you watch movies you have to have surround sound. So that box has to be checked, but why checking that box disables your HD WMVs audio is a mystery when it worked fine in Vista. Also if you noticed, maybe different for your setup, but I use HDMI all the way through, to receiver from there to LCD. Under the Realtek Digital S/PDIF in the sound setting instead of the Realtek HDMI Tab, that when testing and playing the 3 supported formats, the first 2 I believe are Digital Sound, and DTS worked great, but WMA wouldn't. Now in Windows 7, I can't get any audio to play when testing any of those under the S/PDIF audio settings. I even hooked a optical cable, and nothing. And no I don't want to go back to Vista, there has to be a way to get this resolved. Please tell me you’re on to something, or have found a solution... Mike
That all makes sense, and I would almost give up trying to resolve the issue after reading this, but then you got to ask yourself, well how did it work in VISTA? Must be a Windows 7 or even Realtek drive issue.