How can I improve quality of this clip?

[Stanley_A]

I'm backing up a DVD. One of the clips of the DVD has horrible quality (that is the original quality, so after compression, it becomes much worse).
Original average bitrate of this particular clip is 2187 kbps. And it is interlaced.
What can I do to make the result not so unwatchable?
Filters? Which ones? How do I use them?

Thanks in advance.

http://img517.imageshack.us/img517/5313/image1hk9.png

http://img84.imageshack.us/img84/9183/image2kx0.png

[Guest]

What DVD is it? Title and region?

[Stanley_A]

It's the DVD that comes in the "Super Deluxe Edition" of the Joshua Tree (U2) released in 2007. It has the Paris 1987 concert, a documentary and four short videos. The concert looks "ok". But the documentary and music videos look like the images I posted. Those images are from the documentary. Region 1.

[Sophocles]

What's the run time of the entire disc?


Edit.

I'm guessing that you are backing up to a single layer disc, and that the movie has an LPCM uncompressed sound track which is crowding the disc for space.

[Stanley_A]

Yes, the only audio track is an uncompressed LPCM.
But the whole disc is only 6,14 GB.
The original quality of the documentary and videos (not the concert) is like the pictures I posted.

Runtime of the entire disc:
Concert: 01:25.55
Documentary: 0:48.01
Video 1: 00:04.47
Video 2: 00:07.38
Video 3: 00:04:46
Video 4: 00:05.42

[Stanley_A]

I'd like to achieve something like this:
http://forum.doom9.org/showthread.php?p=798485#post798485

But I don't have the slightest idea how to achieve it through DVDRB's filter editor. I've only used undot/fluxsmooth/deen. And nothing else.

[Sophocles]

es, the only audio track is an uncompressed LPCM.
But the whole disc is only 6,14 GB.


Yes but how large is that LPCM track? Part of the video quality issue (graininess) is due to the camera's used to video it at the time. It's probably an early tube, CMOS, or CCD camera, to analog tape, but the artifacts that I saw are likely from over compression. The LPCM track is so large that it's starving your video for space. My advice if you want to keep it in tact and looking at least as good as the orginal is to use a dual layer disc. I've done lots of music DVD's and an LPCM soundtrack is often an issue.

[fjhdavid]

give a try to fft3dfilter, this way:

FFT3DFilter(sigma=3,bt=3,bw=32,bh=32,ow=16,oh=16,plane=3)
FFT3DFilter(sigma=1.8,bt=3,bw=32,bh=32,ow=16,oh=16,sharpen=0.4,plane=0)

sigma for color (U,V planes) can be set higher than for Y plane (sigma=3 vs sigma=1.8) as color spatial resolution is lower than luma

you can play with sharpen from 0.3 to 1 (go from 0.3 to 0.7 if you upscale, but avoid above 0.7 as it starts to ring)

leave the other settings as they are (these are "almost the best", as bt=5 is far slower)

but remember (you will find the reasons on the net):

- do sharpen after resizing, so my advice would be to put these two lines at the end of the script (as denoising and sharpen are done in the same command even if sharpening is done AFTER denoising (look at fft3dfilter documentation))
- do upscale in "R,V,B" planes (this is the best) and if you use Lanczos do NOT use "taps" higher than 2 (to avoid ringing) (to use taps=4, give a try to Blackmanresize in avisynth 2.5.8 only)

tell us but you will be amazed by the results!