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View Full Version : SAR and SD MPEG-2 Playback


TinTime
22nd August 2010, 16:04
Is there any way to play back an MPEG-2 video stream and amend the SAR on the way?

For example, if I play standard PAL widescreen video (720x576, 16x9 DAR) with Zoom Player / ffdshow / madVR, then the SAR passed to madVR is 64x45. I've just whiled away an hour or so trying to get ffdshow to do otherwise.

Are there any decoders that would make it possible to set the SAR to (what I consider to be :)) the correct value of 16x11? Or some setting in ffdshow that I missed?

TinTime
22nd August 2010, 17:06
Argh. Of course I've now found that this question has been posted before (http://forum.doom9.org/showthread.php?t=152526) in the Newbies forum, and I'd even posted a reply there :o

Anyway, after more fiddling I've found a solution.

When playing back in Zoom Player with the stream muxed to mkv...
Haali splitter -> ffdshow -> madVR
...the container AR is not respected but...
Haali splitter -> MS MPEG-2 Video Decoder -> ffdshow (just to convert NV12 to YV12) -> madVR
...does respect the container AR.

So now I'm happy.

EDIT
I've now got a full solution for DVDs too using ffdshow - see this post (http://forum.doom9.org/showthread.php?p=1429082#post1429082).