SOLVED VC-1 issues (VC1) (1 Viewer)

[hoborg]

Re: VC-1 issues (VC1)

Right now there is no way how to play VC-1i at correct speed with DxVA on using DirectShow at last until someone write open source decoder for it to add it in to FFMpeg. VC-1 is really bad codec comparing to h.264, too many problems...

 

[tourettes]

Re: VC-1 issues (VC1)

Right now there is no way how to play VC-1i at correct speed with DxVA on using DirectShow at last until someone write open source decoder for it to add it in to FFMpeg. VC-1 is really bad codec comparing to h.264, too many problems...

VC-1 is not that much different from H264 (quality wise) if I remember correctly they are both based on teh same specs, the problem comes with bad codecs.

Too bad that there are quire many BD releases that have VC-1i (interlaced content is better for fast moving content like sports etc.).

 

[domb]

Re: VC-1 issues (VC1)

I've traced the problem to this...

Playback of VC-1 video inside M2TS container stutters or gives wrong framerate
A:

This is a known problem with the "EVR Custom Pres." renderer in MPC-HC in combination with the Gabest MPEG splitter.

There are several solutions/workarounds:

* Set Haali as preferred source filter for M2TS files. You can do that with the Codec Tweak Tool.
* Select a different video renderer in MPC-HC options. Recommended alternative renderers are: EVR Sync, EVR, Haali, and System Default.
* Temporarily enable the option called "Frame Time Correction" in Media Player Classic. You can do that through: View -> Renderer Settings -> Presentation -> Frame Time Correction.
Tip: you can toggle this option on/off by pressing the C button.

I imagine if we could change the renderer of MediaPortal from EVR Custom Pres then this would be solved? I can succesfully playback .m2ts files with Haali spliter but as the Blu-ray plug-in cannot use that it doesn't help much!

EDIT

Chaning to VMR still means juddering VC-1. I can only assume the usning plain EVR instead of EVR Custom Pres might help but I have no idea of the differences or if thats even possible with MediaPortal. Perhaps not?

 

[tourettes]

Re: VC-1 issues (VC1)

I imagine if we could change the renderer of MediaPortal from EVR Custom Pres then this would be solved? I can succesfully playback .m2ts files with Haali spliter but as the Blu-ray plug-in cannot use that it doesn't help much!

You simply cannot change the EVR renderer used in MP. You need first implement lot of stuff to be able to do so. Also EVR Custom in MPC-HC has nothing in common with the MP's EVR presenter that shares the same name.

Temporarily enable the option called "Frame Time Correction" in Media Player Classic. You can do that through: View -> Renderer Settings -> Presentation -> Frame Time Correction.

This is just an ugly workaround for the actual issue. It will "guess" the timestamps for video frames.

A proper way to fix the issue is to fix the source filter to handle VC1 timestamps.

 

[domb]

Re: VC-1 issues (VC1)

Well I don't know about renderers in any way so I don't know how easy it is to change them... just a suggestion.

The other thing I thought was maybe Gabests MPEG Source filter could read the playlists, then Haali play them, but I'm guessing Haali can't playback playlists.

 

[Kotik]

Re: VC-1 issues (VC1)

Currently the only way to have VC-1i is using win XP and VMR9.

 

[hoborg]

Re: VC-1 issues (VC1)

Currently the only way to have VC-1i is using win XP and VMR9.

? Why?

 

[Kotik]

Re: VC-1 issues (VC1)

Cause under windows XP you can block Microsoft DMO codec and force PDVD codec to be used instead. This way you will get DXVA and smooth playback of all the VC-1i material.

You cannot do the same under windows 7.

 

[SiLenTYL]

Re: VC-1 issues (VC1)

but in XP u cannot use the MS DTV Video decoder which is the only way i get perfect mpeg2 tv digital playback as no other codec has anywhere near as good quality, smoothness and its basically perfect for any mpeg2

its only available in win 7 ...

lol

 

[hoborg]

Re: VC-1 issues (VC1)

Cause under windows XP you can block Microsoft DMO codec and force PDVD codec to be used instead. This way you will get DXVA and smooth playback of all the VC-1i material.

You cannot do the same under windows 7.

Well, that is not true, you can do the same in Win7. But this wont help. PDVD decoder wont connect becouse it use different CLSID for media.

BTW, i am now testing new SAF and bad timestamps for VC-1 seems to be fixed. I have only two VC-1i samples, both had problems but now playing fine.