Microsoft Dtv Dvd Video Decoder
Let's say we have an MPEG-4/H.264 file. The file has framerate of 5 fps and keyframes (I-frame) every 10 seconds, i.e.
Microsoft MPEG-2 Video Decoder. In the registry, the friendly name of this filter is 'Microsoft DTV-DVD Video Decoder'. Filter Information; Filter Interfaces. Mar 21, 2017 Discussion Applications using directshow crash after Windows update KB4013429 - Microsoft DTV-DVD Video Decoder.
0s, 10s, 20s, 30s etc. Finally, we want to play a segment from 22s to 35s inside the file. (The numbers here are chosen for the clarity of the example). The Demux I am using figures out that the decoder downstream needs the I-frame at 20.0s to be able to decode the B/P-frames at 22.0, 22.2, 22.4. 34.8 and 35.0s.
So, the Demux sends samples (frames) at 20.0, 20.2, 20.4. 24.8 marked as preroll (!!!) and samples at 25.0, 25.2. 35.0 as normal (non-preroll) samples. The Demux also flags the first sample (at 20.0s) as Discontinuity. This should be enough for the decoder to decode and display the segment from 22.0 to 35.0.
The Microsoft DTV-DVD video decoder does this. Well almost and a little more. Inspecting the communication between the decoder and the renderer, the following (now decoded) samples flow between the pins: 20.0, 22.2, 22.4, 22.6, 22.8. Obviously, the sample at 22.0 is missing. That's not end of the world. What is worse is that it sends the I-frame as the first sample! This can be distracting to the viewing end-user, because the picture 'jumps' between the first two frames.
I have control over the Demux; Is there a way to tell the decoder NOT to show the I-frame (at 20.0 in the example)? Did the Demux missed to set some flags? I'm pretty sure that this is a bug in the Microsoft decoder. In any case DVD playback is not in Windows 8, so it sounds like the Microsoft DTV-DVD video decoder is going to be withdrawn in Windows 8 (or at least will only work in Media Center).
Windows 10 Mpeg 2 Codec Download
There doesn't seem to be any clear information about what MPEG decoders and encoders that are in Windows 7 will not be generally available in Windows 8. I haven't checked the recent Windows 8 prerelease, so maybe if anyone has it installed they can check whether the Microsoft MPEG decoders and the MPEG-2 Encoder is present? I'm pretty sure that this is a bug in the Microsoft decoder. In any case DVD playback is not in Windows 8, so it sounds like the Microsoft DTV-DVD video decoder is going to be withdrawn in Windows 8 (or at least will only work in Media Center). There doesn't seem to be any clear information about what MPEG decoders and encoders that are in Windows 7 will not be generally available in Windows 8. I haven't checked the recent Windows 8 prerelease, so maybe if anyone has it installed they can check whether the Microsoft MPEG decoders and the MPEG-2 Encoder is present?
Thanks for the reply. Yes, it appears that the DVD capabilities (MPEG-2) will be gone from Win 8. Understandable, taking into account the licensing cost and implications. We've investigated the licensing options for MPEG 2 and 4, and it's a jungle and not quite user friendly. For example, it's not possible for us as 3rd party to license it in anyway and redistribute a decoder and encoder that may be used commercially.
The end-user (unless they are private person) will need to obtain their own license from MPEGLA. MPEG-4 Part 10 (AVC) is decently prices – I can’t say the same for MPEG-2; probably the same reason MPEG-2 decoding is not available on the Apple iPad and the reason Microsoft is removing it from future Windows versions. However, it would be nice if Microsoft provided a decoder and encoder (without bugs of course) that is freely available, but that required the end-user / developer to obtain license from MPEGLA to use it just my humble opinion. Yes, licensing third-party decoders can be quite complicated and expensive. Although the headline says that DVD playback is being removed, the issue is MPEG licensing costs are the issue so it's likely that MPEG-2 and H.264 video decoding (and maybe audio decoders) will be removed. I tried to install the current pre-release version of Windows 8 in VirtualBox but it fails with an error code that says that the CPU is not supported which is something to do with virtualization support, even though my CPU is capable - it seems that this is a frequent problem with the new version. C'mon guys, there must be someone here who has installed Windows 8 successfully - it only takes a couple of minutes to check what Microsoft decoders are present.
Microsoft Dtv Dvd Video Decoder Not Working
If they are still present then we still won't know what will happen in the final release, but if they are missing now then we can be pretty sure that they will not be available in the final release.