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easyfab
20th October 2002, 10:27
Is there an optimized Lanczosresize filter for VB ?

I have one from kazuhiro Mogi but it's a very slow one compared of the AVS lanczosresize.
My goal is to use it for TV capture (720*576 or 480*576 -> 480*360 or better 512*384 encode in Mjpeg and with denoise filter).I want to encode this way because after many tests i found it's the better way.
The lanczosresize deinterlaced the video, keep it sharpen and autorized a good compressibility.
For the moment with blend, bicubicresize(0.75) 480*360 and denoise 1.0 at 2 i never lost a frame during the capture but with lanczosresize and without blend and denoise a can only encode at ~21fps.
Sorry for my poor english, and if someone has a clue it would be my savior.

Suiryc
21st October 2002, 15:06
Don't know if it will help you but you can have a look at this thread (http://forum.doom9.org/showthread.php?s=&threadid=33290).
(It links to the Lanczos3 Filter Resize that works with AVISynth and VirtualDub)

easyfab
21st October 2002, 17:37
Thanks Suiryc, but it's the same that I have.
It's amazing the speed increase with avs. With the same filter (nic's lanczoseresize3), the same file and the same codec :
VB + lanczocsresize 496*372 -> 512*384 : 42s
VB + avs lanczocsresize 496*372 -> 512*384 : 34s

Conclusion: It would be great to have VB with yuv direct capture and not pass through rgb when enabling filters.