you can also use nero recode. it has been out for quite some time with the h264 capabilities. i have been using it and it is amazing. it uses 50% cpu to play back a dvd encoded with it. but at 1 gig the the file looks exactly like the dvd.
H.264 and WM9 (VC1 codec) are roughly equivalent in terms of compression. So there's no need to wet yourself over the H.264, since VC1 has been available for some time now. 
My real interest is in next-gen wavelet based codecs that drop the whole idea of block coding and use a 3-D DWT as the transform of choice. Those should be very interesting in that they inherently have next to no blocking artifacts. I don't think that they are quite as sophisticated and refined as current block-based codecs so far, so they probably don't compress as well at this point.
My real interest is in next-gen wavelet based codecs that drop the whole idea of block coding and use a 3-D DWT as the transform of choice. Those should be very interesting in that they inherently have next to no blocking artifacts. I don't think that they are quite as sophisticated and refined as current block-based codecs so far, so they probably don't compress as well at this point.
Originally posted by: RaynorWolfcastle
H.264 and WM9 (VC1 codec) are roughly equivalent in terms of compression. So there's no need to wet yourself over the H.264, since VC1 has been available for some time now.
My real interest is in next-gen wavelet based codecs that drop the whole idea of block coding and use a 3-D DWT as the transform of choice. Those should be very interesting in that they inherently have next to no blocking artifacts. I don't think that they are quite as sophisticated and refined as current block-based codecs so far, so they probably don't compress as well at this point.
Like how H.264 makes everythign blotchy instead of blocky...really helps out with the details.
I guess it depends on alot on the decoder, the hardware the decoder takes advantage of, and the method it uses..
I've tried a few .ts 'high' bit rate streams, with both VLC and PowerDVD, and while VLC maxes out my XP Barton 2600+ with 512mb pc400 ddr, PowerDVD prances along leaving my cpu 70-80% idle, with 5.1 active and it looks better then what VLC was doing (partly since it wasn't acheiving full frame rates).
Anyway, the point is, the decoder may not be fully optimized yet.. Just as MP3 is now 20+ years, but the encoder is still being tuned daily (LAME).
Time will tell.. But its Apples nature to not have the most optimized software.. Hell, take a look at iTunes for windows.. 5-25% CPU for playing an MP3 on my barton 2600? pish!!
Bring on QT7 baybee!! im ready for some h.264!!!
Originally posted by: RaynorWolfcastle
H.264 and WM9 (VC1 codec) are roughly equivalent in terms of compression. So there's no need to wet yourself over the H.264, since VC1 has been available for some time now.
My real interest is in next-gen wavelet based codecs that drop the whole idea of block coding and use a 3-D DWT as the transform of choice. Those should be very interesting in that they inherently have next to no blocking artifacts. I don't think that they are quite as sophisticated and refined as current block-based codecs so far, so they probably don't compress as well at this point.
Actually, don't get your panties too wet yet. Without blocking, issuing the motion compensation is an outstanding issue - as far as I know, it isn't been resolved in any research yet. Without motion compensation, you'd have a hard time getting the entropy reduction necessary for compression even close to H.264. Blocking is bad, but unlike JPEG2000 (that uses 2D wavelets, for the non-EE types) blocking is necessary to the algorithm of video compression yet parasitic in image compression. Furthermore, 3D wavelets can only have two bands in the time dimension, lest you have a nontrivial delay from coding through multiple taps.
there are (several) lifted wavelet solutions for motion compensation
if you want more details about it go to google scholar and search lifted wavelet video
if you want more details about it go to google scholar and search lifted wavelet video
Google Scholar link
There are a bunch of papers about it here. These are a relatively modern development and there's no widely accepted optimal solution so far. As you probably know wavelets are generally more complex to deal with than DCTs because there are several functions that satisfy the conditions to be called a wavelet transform. Still, these likely will replace block based codecs in the long-run.
how big is 1 hour of 720p video using h264 vs mpeg2 vs divx? (assuming they're all encoded to the same quality level)
I'm assuming you're referring to this?
And for others to view, they only need the Moonlight AVC/H.264 Decoder Package v. 1.1 build 40916 from here right?
And how CPU intensive is this codec? I've been encoding files with WM9 with a 1Mb bitrate. From what others have reported, they need to use at least a 1GHz system to playback my files smoothly. How much more horsepower is needed to decode AVC files?
Now in regards to the QT7 trailers. Do they only run on QT7, or is having the h.264 codecs enough to view the files? If you can run this in Windows, is there a way to download the trailers from Apple instead of streaming it?
I grabbed the trailers from the direct links here - http://www.davestrailerpage.co.uk/ (scroll down to "Apple Hi-def Trailers." The BB 1080p link no longer works, but i think the others are still available.
I installed the moonlight player and nothing else and it played (brought my comp to its knees; didn't have a chance to try it on my better machine).
Rock Hydra
Diamond Member
- Dec 13, 2004
- 6,466
- 1
- 0
If you want to learn about compression, d/l VCDemo it's a good little tool, that will show you what each type of compression image/video can do, comparably. i used it in a mult. compression class I took....I like comparing the MSE values
Originally posted by: gar3555
If you want to learn about compression, d/l VCDemo it's a good little tool, that will show you what each type of compression image/video can do, comparably. i used it in a mult. compression class I took....I like comparing the MSE values
link?
batmang
Diamond Member
- Jul 16, 2003
- 3,020
- 1
- 81
dave's site rocks... look at the speeds i was getting from work
http://pics.bbzzdd.com/users/batmang/yeah-thats-fast.jpg
http://pics.bbzzdd.com/users/batmang/yeah-thats-fast.jpg
That dave's trailer page site does rock but he(?) doesn't host the file, he provides the links to the direct download of the originating site.
argh. for some reason my ftp connection timed out 100 megs in (it's 150 megs) and it wouldn't let me resume. i'll try again tonight.
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