poorer quality in avs than in dgindex

[=mikk=]

hello!

i just noticed that playing an avs with only "mpeg2source("file.d2v")" give´s me an different(poorer) image than playing the linked vobs directly or the preview in dgindex.
the difference isn´t that much but its noticable - before i noticed that its none of my settings i tried for hours to find the cause.

the differences are hard to describe, if needed i could offer screenshots.
but perhaps someone has an idea without this - perhaps this is normal? i would have thought that avs output should be the same as dgindex shows - but perhaps thats wrong. or its something on my system but i have no idea.

regards
Mikk

[neuron2]

You didn't say how you viewed the AVS script.

Here's one possibility: DGIndex upsamples to RGB for display and does it honoring the progressive_frame flag. An AVS script however will pass the native color space of the source unless you explicitly convert it. VirtualDub converts to RGB for display but always uses progressive upsampling, and that can cause artifacts if the video is sampled as interlaced.

Another possibility is the Video/YUV->RGB option. It is honored for display within DGIndex but not when serving via an AVS script.

If you'd like to post an unprocessed VOB fragment I'll be happy to diagnose it for you. You can use ChopperXP to cut it.

[Terranigma]

That makes no sense what so ever. Sounds like a "DirectDraw Overlay" problem. Maybe you're trying to view the .d2v with dgindex open as well? You could download AvsP (http://avisynth.org/qwerpoi/) and see if your dgindex file's still showing worse quality than the source.

[Retsam]

Yeah you could load the avs into virtualdub as well and see what it looks like. I doubt its lower quality, that wouldnt make sense, unless youre running some commands in the avs file to do so.