Unable to capture past 352x288 in vdub with AIW

[BluDChyLD]

I've been trying to do some vhs capturing and for some reason I can't select a res over 352x288 to capture with. I've also tried avi_io and digitalvcr with the same problem.

I want to capture 720x480 res with mjpeg or hufyuv and reencode to divx, what program can I use for that? I read that maybe this bottleneck was caused by the drivers but I can capture in a higher res in MMC with no problem but only in a 16.9 aspect ratio.
Any advice appreciated,
BluDChyLD

[J_p]

Have you tried 'set custom format'(shift+f) option in VirtualDub.
Some ATI driver versions didn't allow me to choose higher resolutions from 'Format' -option in VDub.
Set custom format allowed higher resolutions and it also worked nice.

[bb]

@BluDChyLD:
I'm confused about your resolution suggestions, because 352x288 is a typical PAL res, whereas 720x480 is for NTSC. :confused:

For PAL use either 352x288 or 720x576 (or better 768x576).
For NTSC use either 320x240 or 720x480.

bb

[BluDChyLD]

oh right, i'm new to vhs capturing at when browsing through a few threads there was a lot of mention of capturing with a 480 horizontal res, I just assumed it was the norm. Didn't think about pal and ntsc :)

[bb]

480 _horizontal_ res is fine if you go for SVCD. You can capture 480x576 (PAL), and you don't need to resize.

But beware: The vertical resolution MUST be either 576 (PAL) or 480 (NTSC) for the higher resolutions, because otherwise you won't be able to deinterlace properly. Only if you use the quarter resolutions (XXXx288 PAL, XXXx240 NTSC) you don't need to deinterlace, because one field will be dropped, and thus there won't be combing artefacts.
If your target is SVCD or DVD you can leave the video interlaced (because MPEG-2 supports that), but you'll still need the fixed vertical resolutions (576 PAL/ 480 NTSC). Personally I prefer to deinterlace even for MPEG-2 because of the better quality.
You can play with the horizontal resolution as there's no fixed number of lines like for the vertical res. For best quality it's recommended to use the maximum possible (like 768), because resizing to a lower resolution later will also lower the noise.

bb