Problem. Grainy video.

[Marios14]

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.

[Baldrick]

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.

[Marios14]

I do not want to make a noise reduction as this removes fine details. I have posted an image. I cannot upload video from my hard disk as it asks for video url. Grain is not visible when it is a picture but you can zoom it.

[jagabo]

I cannot upload video from my hard disk as it asks for video url.

To upload a file use the "Upload Files/Manage Attachments" button below the Quick Reply box below. Not the Insert Video icon above the edit box.

[Marios14]

I uploaded the video.

[davexnet]

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.

[Marios14]

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.

[davexnet]

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.

[sanlyn]

What grain?

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?

[jagabo]

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.

[sanlyn]

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 720x480 4:3, ~102 MB, 3min 22 sec) http://www.mediafire.com/download/45qzz2lrg27z9xf/g_avi_PAL25p.mkv


[Attachment 20959 - Click to enlarge]

[Marios14]

What grain?

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?

I'm not an expert in video but i want to fix those old episodes from tv so i can watch them at full screen or tv converted in dvd format.

[davexnet]

Try AVStpDVD as was mentioned earlier. Since the source is 4x3, you'll have black bars at the side if
you watch on a wide screen (16x9) TV. (Unless you do some serious cropping or fudge the aspect ratio)