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View Full Version : Why use AviSynth if using TMPGEnc?


FireW0lf
8th January 2006, 17:35
Hi all

I have started converting my avi's back to DVD format so that I can sit more comfortably in my lounge and watch them

I found AVI2DVD right here on Doom9, but it seems a bit ropey :eek: - possibly due to some glitches in the original encoding?

Anyway, I was deciding to do it manually, stage by stage (or knock up a quick VBScript to do most of it for me)

BUT..... As to the question in the title - basically what I am asking is, which is better - resize/letterbox via AviSynth, or directly in TMPGEnc?

From everybody I know who does stuff with videos, they all without exception swear by TMPGEnc for its quality/speed

Seems if TMPGEnc does the resize/letterbox internally, why send it a script telling it exactly the same thing? Is there any merit in doing it this way?

Abond
9th January 2006, 10:33
TMPG resizing - slow and soft (it uses bilinear)
Avisynth resizing - fast and sharp (Lanczos)
TMPG require RGB24 input. If you do not use avisynth the conversion from YV12 to RGB24 would be made with the codec of the avi or TMPG itself - lossy
Avisynth conversion - good

FireW0lf
9th January 2006, 19:20
Thanks for that - AviSynth for resize, TMPG for format convertion - sounds good to me

Ash123
26th January 2006, 18:58
How faster, on a 3Ghz machine, are we talking?