results of 352x480 rather jerky

[mscott]

I captured a vhs tape with virtual dub using a format of 352x480. Then when I edit it I reduce it to 352x240 for VCD compliance. With the applied filters I get a very acceptable level of quality. However, after running it through tmpegenc, I play it back via power dvd. The result is very jerky(lots of stutter) in motion sequences. When I capture at 352x240, quality suffers(picture looks like a vhs dub to another vhs tape) but motion is very smooth. Is there a setting somewhere within virtual dub or tmpegenc which can smooth the jerky motion when capturing at 352x480.

Mscott

[therick]

with 480 you have captured both of the interlaces fields...use the "deinterlace" filter in TMPEG or Vdub.

[mscott]

TheRick
thanks for your suggestion regarding deinterlacing. During the editing phase in Virtual dub I used the Smart Deinterlace filter. the jerkiness did not go away. One idea I had was that if my hard drive is not fast enough for the streaming video, then this could cause jerkiness or pausing of the video. Problem here is that I don't seem to have this problem when encoding at 352x240 vs 352x480. Any further suggestions would be appreciated. i am running out of ideas.
mscott

[vhelp]

why don't you just try the DeInterlace filter instead of the dum (i mean) smart one?

and set to (o) BLEND !!

[bbb]

I read that the VirtualDub (smart and regular) deinterlace filter is not a true de-interlacer. Regardless, I usually never touch deinterlacing until Tmpgenc.

Typically, I use blend deinterlace in Tmpgenc. It slows down the encoding process but I always have good smooth results.

Just make sure you get the correct field order. (Try both field orders to find the one that playback is smooth. Sometimes, if your source is digital, both field orders are smooth and are acceptable.)

How fast is your computer? Most Pentium II (including AMD K2s) class 300 MHz or higher computers should have no trouble playing 352x480 encodes. Pentium I class computers probably can't handle that resolution unless you got the Pentium 233MHz cpu and an ATI video card.

[mscott]

bbb,
Thanks for the response. To answer your question, I have a pentium III 800 with 256meg of ram and the ATI all in wonder card with 32 meg of ram. I don't think this should be the issue unless someone sold me an XT by mistake (kidding).

vhelp,
I guess from your reply you impression of the Smart(?) deinterlace filter is far from positive. I will keep this in mind.

thanks to both of you for your input I will try your suggestions tonight and get back to you...

mscott