I have converted a grainy video of low quality to dvd video with Aone Movie DVD maker to 9400kbps and this removed almost all the grain from the video and then i reconverted to dvd with 9800kbps quality with Womble EasyDVD and this removed 95%
of the grain and fixed the video when the rule is that it does not clean grain by conversion to dvd. Why is cleaned? Can i clean it more? What else can i do? Only the text in videos are still very grainy when the image is very clean.
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Thread: Problem. Grainy video.
Last edited by Baldrick; 21st Oct 2013 at 13:51. Reason: New title.
Post a short sample or screenshot and we might help with some better filters.
And PLEASE don't just use problem as thread title. I have adjusted it this time.
I uploaded the video.
The bitrate is very low, only 2 mbps, also the aspect ratio is bad. Looks like a 4x3 video stretched to widescreen (16x9)
Is this what you intended?
Perhaps you should post the source instead.
This is not what i intended. The conversion dvd maker said i convert avi to 9800 mbps and i have choosed 16.9. I have uploaded the source video.
The source doesn't look too bad for a typical low quality downloaded SD clip. The sound quality is poor because
the bit-rate is so low. When you mention grain, are you referring to the resulting DVD attempt? Perhaps encode
with a constant bitrate of about 8.5 mbps, or try variable bitrate (the HCenc encoder, for example) at about 7 mbps.
Your "9800" bitrate is something from the file header, perhaps related to a theoretical maximum. Since your
average is so low (~2 mbps) it doesn't have much meaning. Perhaps give AVStoDVD a try.
Regarding the aspect ratio, it is a 4x3 clip. To encode it to a DVD without picture distortion, either make a
4x3 DVD or pillarbox @ 16x9 it, giving black bars on either side of the picture.
Some of the more creative resizing and aspect ratio distortion I've seen in at least a week. Watching those blended frames from incorrectly deinterlacing pulldown video is apparently a hoot for some folks nowadays. But we've seen worse.
What is supposed to be the intended final output? PC-only?Our inventions are wont to be pretty toys, which distract our attention from serious things. They are but improved means to an unimproved end. -- Henry David Thoreau
I have to agree -- g.avi doesn't have much grain. Blocky artifacts and DCT ringing -- yes, if you don't use a deblocker and deringer. And the VOB file has an average bitrate around 2000 kbps, not 9800. I suspect the bitrate you selected was the maximum bitrate and you picked a "4 hour per DVD" mode in the MPEG 2 encoder (~2000 kbps). And that made the video worse.
The mkv link is from "g.avi" in post #7. Working with low bitrate/undersized/blended stuff is a chore, but the kids were too cute too ignore. Most of the compression block noise and ringing are fixed, but there's not enough video data in the source to hit it with more filters. Did what I could, but finally got tired and had to move on. There's still a little banding, though, and motion is fuzzy. I gave up trying to unblend.
g_avi_PAL25p.mkv (PAL 25p 720x576 4:3, ~102 MB, 3min 22sec) http://www.mediafire.com/download/45qzz2lrg27z9xf/g_avi_PAL25p.mkv
Last edited by sanlyn; 1st Nov 2013 at 22:09.Our inventions are wont to be pretty toys, which distract our attention from serious things. They are but improved means to an unimproved end. -- Henry David Thoreau