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Old 27 Apr 2003, 07:23 PM   #1
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Default 2 Rips. Very differant quality. But Why?

I look at one rip ive done. Megadeth Rude Awakening. And one which I download sometime ago. Its a movie called The Dish. The Dish looks ALOT better than my rip. I right click on the files on the desktop and heres what I get

Megadeth Rude Awakening/The Dish

Image
Width-640/608
height-352/320

Audio
Duration 1:38:24/1:37:18
Bitrate-123kps/143kps
Format-MPEG layer3/MPEG layer3

Video
Frame rate-25 fps/25fps
data rate- 129kps/121kps
video sample size- 24bit24bit
video compression- Divx Codec/DivxMPEG4 v3

The only real diff I can see is the last line..

Im used gordian knot latest release to do all my work. Ohh and they are both the same size (~700mb)

Last edited by MarkH; 27 Apr 2003 at 08:24 PM
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Old 27 Apr 2003, 11:07 PM   #2
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what is the difference?

be a little more precise otherwise it's guesswork for us.

the downlaoded version has divx3 and yours is what?

what settings did you use?
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Old 27 Apr 2003, 11:20 PM   #3
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Mmkay, well, sorry

I used divx 5.02, the one with gknot. I used exactly the settings as per the guide found on digital ferret

http://www.digitalferret.com/section...owcontent&id=5

The one I downloaded is really crisp looking, while mine is kinda blocky.

I'm kinda new to all this, so..

I'll use the guide in yor siggy anyway

Last edited by MarkH; 27 Apr 2003 at 11:22 PM
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Old 28 Apr 2003, 12:58 AM   #4
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You have to know how to set the settings in GK just right. I mean one thing could throw something off. Maybe check out what you had your settings to if you saved them in GK. Possibly something you forgot to change and left it default made it look bad.
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Old 28 Apr 2003, 10:07 AM   #5
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Quote:
I used exactly the settings as per the guide found on digital ferret
i read the very beginning of this guide and i must say you should better stay away from it!

in the audio part there are mistkaes which clearly indicate the author is not sufficicently familiar with the business.

when one extracts audio with a DEMUXING option, it is absolutely nonsense to **10. Click on ’48 - > 44.1KHz’ and select ‘Off’.** or to **11. Click on ''Normalization'' and drag the slider that appears to 100%** since DEMUXING always extracts the present audio streams as they are - this process never changes anything in the audio stream itself.


concerning video: for one cd rips you might rather use a resolution like 576 x XXX than 640 or bigger. that of course also depends very much on the length, aspect ratio and type of the material you are going to transcode.

download latest gk version 028 which has LANCZOS resizer build in (best resizer i have used and i now used it for all conversion no matter if its 1,2 or even 3cds [lotr-special extended edtion] as it is very sharp and still compresses the material very well)

even more important: for long film on 1 cd a noise-filter like convolution3d might be useful, as it smoothes your picture a little bit and thus removes macroblocks.

i am not sure if the NOISE filters in the latest gk 028 version make use of convoltuion3d or any other de-noiser.

i use DVX for month now and that tool offers easy access to lanczos as well as convoltion3d (with the noise filter options).

and last but not least: use OGG vorbis at lower bitrates than mp3 (it is much better than mp3 that's why you could use values as low as 60-80 kbps where mp3 would sound really crappy). this way you will save bitrate for the video and therefor improve your video stream.
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Old 28 Apr 2003, 06:37 PM   #6
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Ok so I was going through your guide and found the problem as to why my rip looked bad, but i dont now how to fix it

On step 3.9 of your guide you talk of the Bits/(pixel*frame) section. You say the figures next to the load button should be between 65% and 45%. Mine is highlighted in red with a value of ~24%. I can get this to around 65% but thats only when I half the resolution to around 320 width

I'll use vorbis for my audio once i get good visual first

Thanks for your help so far aswell. Now, f olny i knew how to add attachments it may make it easier

Last edited by MarkH; 28 Apr 2003 at 06:57 PM
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Old 28 Apr 2003, 09:04 PM   #7
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Quote:
Mine is highlighted in red with a value of ~24%
you seem to convert a VERY long title to ONE cd, arent you?

why dont you go for 2 cds?
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Old 28 Apr 2003, 09:17 PM   #8
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yeah 98 minutes should be a 2 CD project
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Old 28 Apr 2003, 09:38 PM   #9
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stupid me

i forgot about the data you provided in your initial posting.

well ~100 should fit on ONE CD with decent quality.
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Old 28 Apr 2003, 09:47 PM   #10
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Quote:
Originally posted by SKD_Tech
yeah 98 minutes should be a 2 CD project
No.

A 98 minute video will allow for sufficient bitrate with 1CD at 850+ kBit/s. When the video play length exceeds 2 hours, using 2CDs then is highly recommended.
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Old 29 Apr 2003, 12:50 AM   #11
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Well there are opinions about stuff like that. Personally I like to make a 2 CD project if it is around 100 minutes so I can get great quality but I see what you are saying
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Old 29 Apr 2003, 01:01 AM   #12
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Okay then, I'll do the test thingy again with a two cd.

I'd still like to know how to the one i downloaded is excellent quliaty at only a few minutes shorter. Any Ideas?
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Old 29 Apr 2003, 01:24 AM   #13
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Maybe the movie you downloaded was very dark. I mean divx always (well almost.... )produces better quality when the film is dark (not much light, not much action etc.). If the movie you try to encode has a lot of action on it or is very bright the results will not be perfect. On the other hand maybe the movie you try to encode has a lot of "noice". try encoding again using the option pre processing source at light or normal (on divx options) do not use strong or the movie will loose a lot of detail.
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Old 1 May 2003, 03:38 AM   #14
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Okay heres the scrrenshot of gknot.
Attached Thumbnails
2 Rips. Very differant quality. But Why?-gknot.jpg  
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Old 1 May 2003, 05:46 AM   #15
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your Bits/(pixel*frames)

is REALLY LOW! You much make your movie a much smaller resolution
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