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PrayeR
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Posted: Tue Oct 28, 2003 1:38 am Post subject: compression in MPEG4 (xvid) |
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a member of the recently deceased Joined: Fri Jun 13, 2003 12:55 pm Posts: 1194
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guys, when u rip with Gordian knot u use compression?
and if u use, could u be so kind and answer on my question
it's usefull?
it's where u choose which resize filter, deinterlace options, noise.
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spudthedestroyer
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Posted: Tue Oct 28, 2003 1:47 am Post subject: |
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Site Admin Joined: Sat Nov 02, 2002 1:35 am Posts: 19754 Location: En España
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the only thing I see on that is compressability check, and of course you use that... if your referring to that, which I doubt, for the love of god, yes you do. Its vital as you need to test to see if your settings will yeild a good result and if you need to change the ratio, bitrate, audio settings etc. Apart from compressability test which is vital, I don't see any other "compress" option unless it's on some submenu I don't see.
Detailed guides on every step is available at:
http://gspot.doom9.org
Tells you what every option does and why you need to use it or not. They made the program and therefore give better answers than we possibly can do
_________________ Mouse nipple for the win! Trackpoint or death!
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PrayeR
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Posted: Tue Oct 28, 2003 1:51 am Post subject: |
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a member of the recently deceased Joined: Fri Jun 13, 2003 12:55 pm Posts: 1194
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yes. that compression.
ok, lazy lads, i will check doom9 by myself.
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spudthedestroyer
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Posted: Tue Oct 28, 2003 2:01 am Post subject: |
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Site Admin Joined: Sat Nov 02, 2002 1:35 am Posts: 19754 Location: En España
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Well it's not lazy it's just that us writing out exactly what you need to do would take a whole website and that's kinda pointless because that's exactly what gknot is
That's all, I can repeat exactly what my guide is but it's identical in everyway to that website
The compression test is complicated as it tests the compressability and returns a floating point number and percentage to indecate the quality of the movie and you must adjust your settings accordingly to match the compressability. Bitrates, resolutions, etc. are entirely encode specific and the only way to find the right settings for the rip is via a compressability test. That's what the feature does in essence, and therefore it;s vital to getting a good rip and getting a file meets the specs you enter
That and i'm too lazy to copy and paste doom9 here
_________________ Mouse nipple for the win! Trackpoint or death!
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PrayeR
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Posted: Tue Oct 28, 2003 2:04 am Post subject: |
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a member of the recently deceased Joined: Fri Jun 13, 2003 12:55 pm Posts: 1194
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ok, as i understand - it shows only limit of comression with that codec
so i wont be able to use any additional bitrate.
i just wonder, u guys release rips in high resolution with bitrate about 1000.
i make - 800-900 with low resolution... :-/
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spudthedestroyer
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Posted: Tue Oct 28, 2003 2:22 am Post subject: |
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Site Admin Joined: Sat Nov 02, 2002 1:35 am Posts: 19754 Location: En España
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bit rate is encode specific unfortuately, and even if you have a high bit rate it doesn't garantee good quality.
My advice is attempt to stay within the TDX guidelines. If you don't know them i'll post. My starting model for a rip is always, 128kb audio, and then scale the resolution to meet the number specified in gknot guides. 1.5 is it for a 1cd rip? I can't remember off hand (the number in the box at the bottom - very important ). Then do a compressability test, then refine the settings to ensure i have quality above 60% (preferably about 65-70%). How to achieve this is on gknot in detailed steps
_________________ Mouse nipple for the win! Trackpoint or death!
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PrayeR
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Posted: Tue Oct 28, 2003 2:27 am Post subject: |
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a member of the recently deceased Joined: Fri Jun 13, 2003 12:55 pm Posts: 1194
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ohgodnotanotherone
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Posted: Tue Oct 28, 2003 10:30 am Post subject: |
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The Devil, Probably Joined: Sun Apr 27, 2003 6:21 pm Posts: 1676
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ah, prayer....there's no magic solution.....
If you have pure interlaced NTSC content running over a 100 minutes, then yes get ready for a postage stamp.......
A progressive pal movie of only say 80 mins, well every idiot should be able to achieve bitrate of 1000+ , divx 3,4,5 or xvid....
Divx works great with b frames... Compressibility of 55 % will give a fine picture !
_________________ .....Extended holiday at the funny farm......
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spudthedestroyer
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Posted: Tue Oct 28, 2003 8:13 pm Post subject: |
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Site Admin Joined: Sat Nov 02, 2002 1:35 am Posts: 19754 Location: En España
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/me nudges ohgo
psst. xvid
"oh yes, Xvid works great with b frames"
_________________ Mouse nipple for the win! Trackpoint or death!
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monkeysmasher
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Posted: Wed Oct 29, 2003 9:23 am Post subject: |
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The Devil, Probably Joined: Sun Dec 08, 2002 3:07 am Posts: 2174 Location: I'm inside of you.
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just remeber to see if there is a red box in 'output resolition' on the resolution settingpage of gknot. make sure its not red, especially when u autocrop. i mostly do ntsc interlaced dvds, and every one has needed to correct the output size manually. if the box is red, it wont play, but still says it is encoding. hours of wasted time...
_________________ 'You - you monster! Why? Why in God's name do you do these horrible things??!'
'I thought it was obvious, you sillly girl. I'm a monster. I do monstrous things.'
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