Bitrate only 2700 on 24 Season 2 Disc 2 with RC4

[maxse]

HI guys. As you imght have seen form my other thread I am backing up 24. I just finished backing up 24 Season 2 Disc 2 and the bitrate is only 2700, whereas Disc 1 was 3200. Any1 have any ideas as to why this is happening? I am assuming that it is longer, but if thats the highest the bitrate could go could any1 recocmend some sort of filter or how to even use them? I have tried both procoder 2.0 and CCE 2.66 and both came out pretty crappy. Thanks everyone for your help

[a63548]

Here are some screenshots from my 6 pass CCE encode of 24 Season 2 Disc 2. I'm posting these for you to compare to your encode. How much different does yours look? Also, when you used CCE, how many passes did you use? The bitrate for me fluctuates from around 2.5Mbps to 3.5Mbps.

Click the thumbnails for a lossless PNG
http://a63548.net/24/1-thumb.jpg (http://a63548.net/24/1.png) http://a63548.net/24/2-thumb.jpg (http://a63548.net/24/2.png) http://a63548.net/24/3-thumb.jpg (http://a63548.net/24/3.png) http://a63548.net/24/4-thumb.jpg (http://a63548.net/24/4.png)

Also, here is a 10mb .vob file which I cut from episode one of disc 2. When cutting it, the quality is left the same as it was from my encode.

SAMPLE.VOB (http://a63548.net/24/SAMPLE.VOB)

Hope this helps a little.

[Fishman0919]

A filter is not going to help... filters are for poor quality sources and 24 is a pretty good source. Try CCE SP with a diff matrix... QLB 1.2 or DDogg's Bach1 are good for mid to low bitrates.

Edit - Interlaced material (like season disc... 24 ,CSI and so on...) is not CCE's strong point but I have always got good results with QLB 1.2 and 2 or 3 passes... any more passes then that is a waste. Also you can try to lowering the VBR_Bias (maybe 10 or 15) to give CCE a little more room to play with ( the lower the number the big the swing from high to low bitrate cce can use).

[maxse]

Thanks guys. I have no iea about matrices though. a63548 I think we pretty much have the same output. I am playing mine throguh S-Video on SDTV, do you see any pixelation. Sometimes I in dark scenes... I also dia 4-pass CCE. Do you think it would improve quality if I did an extra two passes? Also did DVD-RB give u a 2.7 avg bitrate?

[spuddog]

You could seperate the episodes and re-author into multiple disks. I sometimes do this to maintain the bitrate(quality).

[a63548]

Thanks guys. I have no iea about matrices though. a63548 I think we pretty much have the same output. I am playing mine throguh S-Video on SDTV, do you see any pixelation. Sometimes I in dark scenes... I also dia 4-pass CCE. Do you think it would improve quality if I did an extra two passes? Also did DVD-RB give u a 2.7 avg bitrate?
I can't remember if Rebuilder gave me 2.7 avg bitrate. I did them a few months ago. Sometimes I can see a little pixelation in seens on my computer running it at 1280 by 1024, but on TV I can't see any. I don't really know if two extra passes would help.

[Fishman0919]

Thanks guys. I have no iea about matrices though. a63548 I think we pretty much have the same output. I am playing mine throguh S-Video on SDTV, do you see any pixelation. Sometimes I in dark scenes... I also dia 4-pass CCE. Do you think it would improve quality if I did an extra two passes? Also did DVD-RB give u a 2.7 avg bitrate?

ah.. I wrote this awhile back... please don't take it the wrong way as I do not mean it to be mean http://forum.doom9.org/showthread.php?p=653207#post653207

hope this helps

[maxse]

thanks guys. I actually just did disc 6 using CCE ,and on the scenes where the camera is moving in the dark over the City, with the lights in the buildings on at night, the whole screen kin of fflickers or something creating sort of a strobe effect and its very uncomfortable. Is this to be expected with something this long on a DVD5?

[spammeh]

it's kinda grainy looking but still looks good imo, I compressed a dvd9 very recently with DVD-RB and HC.

Reduction Level for DVD-5: 47.6%
- Overall Bitrate : 2,616/2,093Kbs
- Space for Video : 3,219,056KB
- HIGH/LOW/TYPICAL Bitrates: 8,360/600/2,093 Kbs

Really quite nasty looking, a lot of blocks and smearing - i wish it would look more grainy instead :(

[manono]

Hi-

the whole screen kind of flickers or something creating sort of a strobe effect and its very uncomfortable.

On what are you viewing that? A software player on the computer, perhaps? That show was shot on film, edited on video, and encoded interlaced. What that means is that you have 3 good clean frames followed by 2 blurry blended frames when viewed on something like PowerDVD. That's what creates the "strobing". Find that section (or any place where there's movement), advance a frame at a time, and you'll see what I mean. You'll also get the same effect if viewing on an HDTV using a flag reading player. You shouldn't notice it when viewing on a standard interlaced TV set, unless you did something stupid like deinterlace it.

Those things should be IVTC'd. Not only will you get rid of the strobing, but you'll get much better quality by encoding 23.976fps, rather than 29.97fps as you're doing now. You'll have to do it manually, that is, outside of DVD-RB.

Edit later: I just had a look at that Vob file from a63548. It's progressive 23.976fps, so I guess that 24 is one series that isn't hard telecined. If yours is the same, maxse, then I guess the strobing you see is from something else, and I was wrong about what's causing it.

[OvERaCiD23]

That actually looks very good for a bitrate of only 2700. The grain looks pretty typical too, nothing to worry about. And as others said, 6 passes is a waste. 3 or 4 are the most you should do.