SVHS PAL AVI cropping/resize/filters suggestion
1 Attachment(s)
Hello everyone, I am looking for help to decide which values I have to set to "size" convert my SVHS-AVI PAL video files in preparation to MKV/H.264 conversion thru MeGUI interface to X.264.
My target player is Smart TV player (or Android box tv or PC) and I would like to see these files as 16:9. Source files are SVHS-AVI PAL, 720x576, 5:4, interlaced, 25FPS, acquired with VirtualDub/HuffYUV (no filters), color space YUY2, audio is PCM (48kHz, 16bits, 2 channels). Here MediaInfo for the sample.avi I attached: Quote:
This is AVS when I have chosen ITU 16:9: Code:
AVISource("D:\TEMP\SVHS\1991Ago19-Set6 Kenia (5di5),1995Apr1 Alessia 1° volta in piscina (2di4)\cap.avi", audio=false).AssumeFPS(25,1) |
Your script has logic errors, and it won't work anyway. No one can advise about filters without a sample of your original video. You can edit a short sample in VirtualDub and save it as YUY2, and can post in this forum.
Your main question about resize was already answered: http://www.digitalfaq.com/forum/vide...html#post49117 |
Hi Sanlyn, thanks for explanation about crop and resize. About sample I uploaded it in my first post, should I reload it again ? Many thanks in advance for further help on filters to be applied.
Please le me know |
Quote:
:smack: It's a well detailed capture but looks over sharpened, which gives the impression of excessive aliasing and interlace combing. These can be addressed with different filters. Another problem is that the luma levels are illegal and exceed the preferred YUV range of y=16-235 at both extremes. Apparently highlight clipping occurred during capture, so some bright details can't be recovered. It's too late now for another capture, anyway, if the tape is gone. Some of these problems can be fixed to improve the video. However, I note that your script called for the UnDot filter, which I assume was to clean the occasional horizontal streaks (dropouts). UnDot won't fix those streaks. There is some downward red chroma shift, and about 8 discolored pixels along the right border (I don't think most viewers will notice the right border. Fixing it would be tricky and destructive of detail, which would likely be more noticeable) By the way, your video really is a display aspect ratio (DAR) of 4:3, or 1.33333:1. However the actual image proportions are 1.37:1, which looks like the older "academy" classic film ratio that many cameras used. Of course you can't use 1.37:1 for the DAR. Because of cropping and restoring borders, you should encode a[Et DAR 4:3 to get the correct image proportions. It's not possible for a 4:3 image to fill a 16:9 screen without distorting the image. [EDIT] and the number of unusable pixels along the bottom is 20, not 18. I'm attending to family matters at the moment, but later I can post some filter and script ideas and provide a sample. Sorry for the delay. |
Hi Sanlyn,
really thanks for your support, all I am getting is a very high consulting suggestion. I do not think you have to be sorry........ :) I really appreciate. |
2 Attachment(s)
Below is a script I used to resolve the noise and other problems discussed earlier in your sample avi. The result of the Avisynth script and filters used for aliasing, excessive interlace combing, chroma noise, horizontal dropout streaks, illegal video levels, etc., is attached as "Sample_filtered.mp4". The mp4 is encoded for 4:3 DAR. Unused image pixels were cropped and the original, unaltered image is centered in the frame.
Avisynth script: Code:
Import("Drive:\path\to\Avisynth\plugins\RemoveDirtMC.avs") #<- change path to match your system. I don't use MEGUI. The mp4 was encoded with TMPGenc Mastering Works. |
Site design, images and content © 2002-2024 The Digital FAQ, www.digitalFAQ.com
Forum Software by vBulletin · Copyright © 2024 Jelsoft Enterprises Ltd.