A mix bag of questions...

[iwod]

I was going to post it to some member of the forum but decided it was too much for him to answer. So i will post it here...

Ainme Encoding....


After reading a bit more i understand things abit more... but still a lot of question unanswered.

What is Post processing?? It is like having a Divx file and then apply a filter ( like the asharp filter ) when playing??

If yes, then Real does post processing... to my understanding that is why Real is good at Anime. However, one of the disadvantage of real as some other people say is that it can not be edited afterward because of post processing..... why is that??

I have a laptop with PII366Mhz and 128mb ram, i could just about watch RV9 video, could this spec watch Divx/Xvid Movie with asharp filter??

WHich one could compress better? Divx/Xvid or RV9 with better quality?? ( Assuming the Divx/Xivd is played with asharp filter.

Let Put quality level for all three codec to the same... which will produce smaller file size?? And by how much?? Can you give an example??

And last thing that doesn't relate to anime encoding. Why does Every body uses Gordian Knot?? They said it produces the best quality because it uses the best tools on the market and combines it with a interface. But surely SmartRipper is no longer the best and DVD Decrypter is now king according to Doom9. So Gordian Knot no longer incorate all the bets programs! Why use it?? Why not just use individual programs?? What special features are there in Gordian?

Acording to my understanding. ( Please correct me if i am wrong ) The reason why there is DVD Decrypter is because DVD is being copy protected ( In a sense... or what you call a scrambled ) and DVD Decrypter with copy the content to our harddive, breaking the protection. But on the FAQ/Glossary Doom9 stated that Descrambling does know every key to the scrambled code. So would the quality of the DVD being ripped be not the same as original??

After We Store the Whole DVD content on our HD with DVD Decrypter. We use DVD2AVI to convert it to a AVI file for later to convert it to what ever format.. be it Xvid or Rv9...
Are there any other competiting tools that rival DVD2AVI or come close to??


( I am sorry for asking so much dup question is becuase i can't even afford a computer... I am using a P133.. but my next computer will be a P4 ^_^ )

[karloz1]

I don't use any other codecs (xvid, RV9, wmp..) so I can't answer questions relating to those.

What is Post processing?? It is like having a Divx file and then apply a filter ( like the asharp filter ) when playing??

Yeah, it smooths out edges. Digital video has pixels and Post Processing uses your graphics card to smooth out the pixels. I don't know how Real Player does it, or if it does...sorry.


I have a laptop with PII366Mhz and 128mb ram, i could just about watch RV9 video, could this spec watch Divx/Xvid Movie with asharp filter??

Maybe, you should try it. I had a PII 233 that wouldn't play them, but maybe with a little more speed it might.


And last thing that doesn't relate to anime encoding. Why does Every body uses Gordian Knot?? They said it produces the best quality because it uses the best tools on the market and combines it with a interface. But surely SmartRipper is no longer the best and DVD Decrypter is now king according to Doom9. So Gordian Knot no longer incorate all the bets programs! Why use it?? Why not just use individual programs?? What special features are there in Gordian?

Acording to my understanding. ( Please correct me if i am wrong ) The reason why there is DVD Decrypter is because DVD is being copy protected ( In a sense... or what you call a scrambled ) and DVD Decrypter with copy the content to our harddive, breaking the protection. But on the FAQ/Glossary Doom9 stated that Descrambling does know every key to the scrambled code. So would the quality of the DVD being ripped be not the same as original??

Gordion Knot will tell you which resolution to use for the filesize you want that would look the best. It really does make a difference, and I recommend everybody should use it. As far as DVD Ripping the "quality" of the video that is copied to the hard drive will look the same no matter what ripper you use. The protection only keeps the DVD from being copied, once the key is found and the file is copied, you can't tell the difference from which program you used to copy it.

After We Store the Whole DVD content on our HD with DVD Decrypter. We use DVD2AVI to convert it to a AVI file for later to convert it to what ever format.. be it Xvid or Rv9...
Are there any other competiting tools that rival DVD2AVI or come close to??

Not for Divx 5 and Gordion Knot, AFAIK.


Hope I helped a little.

[Neo Neko]

Originally posted by iwod
What is Post processing?? It is like having a Divx file and then apply a filter ( like the asharp filter ) when playing??

Yes

Originally posted by iwod
[B]If yes, then Real does post processing... to my understanding that is why Real is good at Anime. However, one of the disadvantage of real as some other people say is that it can not be edited afterward because of post processing..... why is that??

It can not be edited because of the proprietary file format. Not because of the post processing.

Originally posted by iwod
[B]I have a laptop with PII366Mhz and 128mb ram, i could just about watch RV9 video, could this spec watch Divx/Xvid Movie with asharp filter??

At 320x240 or so yes just barely.

Originally posted by iwod
[B]WHich one could compress better? Divx/Xvid or RV9 with better quality?? ( Assuming the Divx/Xivd is played with asharp filter.

It depends on the source. RV9 can do better on alot of em. But your system is not close to being in the right class to play em back smooth. Then there are some that Divx5 and especially Xvid can do better on. They require a bit less CPU.

Originally posted by iwod
[B]Let Put quality level for all three codec to the same... which will produce smaller file size?? And by how much?? Can you give an example??

Unfortuantly no. Quality is 100% subjective. Everyone has a different oppinion. If we use lower bitrates RV9 will often win with it's heavy post processing which you can't use. At medium-low, medium, and above bitrates MPEG4 does better. So RV9 is good for low bitrate. But it does not scale up as well.

Originally posted by iwod
[B]And last thing that doesn't relate to anime encoding. Why does Every body uses Gordian Knot?? They said it produces the best quality because it uses the best tools on the market and combines it with a interface. But surely SmartRipper is no longer the best and DVD Decrypter is now king according to Doom9. So Gordian Knot no longer incorate all the bets programs! Why use it?? Why not just use individual programs?? What special features are there in Gordian?

At the time it was the best ripper. Things change. But just because the GUI supports it does not mean you have to use it. Use whatever program you like to rip it. The quality that gordian knot can deliver comes from several programs and a few built in tools. If you are still using SBC, Divx4, and even Divx5 it has a good bitrate calculator. It will also help you resize while preserving propper aspect ratio. And it will auto crop out the black borders on many movies for you as well. For SBC/Xvid it can edit and optimise your stats file. It also gives you the compressability tests if you like. The rest of the quality and speed comes from Avisynth and Virtualdub. Gordian Knot can automate the process. In fact I use Gordian Knot. But I only use it to set up AVS scripts to use in Virtualdub.

Originally posted by iwod
[B]Acording to my understanding. ( Please correct me if i am wrong ) The reason why there is DVD Decrypter is because DVD is being copy protected ( In a sense... or what you call a scrambled ) and DVD Decrypter with copy the content to our harddive, breaking the protection. But on the FAQ/Glossary Doom9 stated that Descrambling does know every key to the scrambled code. So would the quality of the DVD being ripped be not the same as original??

Yes the quality should be the same. Your DVD player does the same thing on the fly while you are watching.

Originally posted by iwod
[B]After We Store the Whole DVD content on our HD with DVD Decrypter. We use DVD2AVI to convert it to a AVI file for later to convert it to what ever format.. be it Xvid or Rv9...
Are there any other competiting tools that rival DVD2AVI or come close to??

I use DVD2AVI but only to set up frameserving. Outside of that it is Virtualdub and Avisynth all the way. Perhaps once Nic releases his DVD2AVI version DVD2AVI might be usable for real encoding.


Originally posted by iwod
[B]( I am sorry for asking so much dup question is becuase i can't even afford a computer... I am using a P133.. but my next computer will be a P4 ^_^ )

If you are having trouble affording one you should check out the Anthlon Xp systems. The P4s are nice but over priced. If you are on a budget you could afford a faster better Anthlon system than a P4 one. Also the 64bit systems will be hitting soon. Perhaps it will be better to wait for the Anthlon 64 systems.

[iwod]

Thanks for all your answers...... which solve me a lot of questions.... BTW, NEo KEO...are you the divx master in divx.com??

[iwod]

Just another question.

Post processing is playing a file with a filter, i.e that there nothing done to the file itself just when it output the image it goes through a filter... ( sounds like avisyth.... are they the same ?? )

That means the "real" real media file may not look good but the filter inside Real Player mades it look good.

Then how can we compare the Orginal or "real" real media files against a Mp4 ( Divx/xvid ) file.

Often Anime compresion are done when Divx and Xvid does not have a filter . What that means is the Key to better quality Anime does not lay mostly in the file inself but in the filter.

So when comparing anime, shouldn't we compare RV9 with a the best filter on Divx / Xvid. ( ok i know you would say there is no best filter but how about a good filter and most people agree it is a good filter?? )

Am i right in saying that??