Log in

View Full Version : Deblocker/Denoiser for Recoding using Avisynth


LOGiC
20th February 2007, 07:29
@all,

I am quite new to Avisynth, just made my first steps. I used an Avisynth Script to load a demuxed .vc1 file from one of my backupped HD-DVD's to Procoder for recoding it to MPEG2. But even if I use a very high bitrate and a two pass recoding with mastering quality, it seems that some blocking is introduced in faster scenes. Especially a lot of grain is there, even if in my opinion, the source does not have too much grain. For me as a newbie, are there good chances to use a deblocker / degrainer directly in the .avs script which I use to recode the .vc1 or do other things instead of "directshowsource" have no effect when loading into Procoder ?

If I can use some things, could you please provide me which ones could be senseful for me and give me a hint how they are exactly used ?

Thank you very much in advance for your kind help.

Regards

Mug Funky
20th February 2007, 12:19
VC1 is far more efficient than MPEG-2 (and h.264 is a shade more efficient than VC1).

so you'll have to either choose a more efficient codec, or resize the movie to SDTV size before re-encoding.

LOGiC
20th February 2007, 12:40
@Mug

thank you for your reply. Is there any better chance using WMV 1080p for recoding ? If you are using WM9 Avanced Profile it should be a bit closer to VC-1. I also tried loading the avisynth script to a trial version of the Mainconcept H264 Encoder, it is accepted, but Mainconcept is very expensive and hardly affordable.

Thanks again.

Manao
20th February 2007, 13:04
It's slightly offtopic but :(and h.264 is a shade more efficient than VC1).No. CABAC alone is already 10% free bitrate, and 10% isn't "a shade more".

LOGiC
20th February 2007, 13:23
@Manao,

sorry for asking so stupid, my english is not the best, what exactly are you saying with this ? I am trying to understand everything to get the best possible solution for my backups.

Thank you.