HD Playback on Catalyst

[samsc]

apple intermediate codec in this thread-

http://chaldee1.gotadsl.co.uk/~richa...ead.php?t=1267

[SvenCRen]

since doing this - i discovered that the apple intermediate codec is even better almost 50% better. looks as good as photojpeg 75%
its better at all image sizes, and works very well on multi-processor machines.
please try this.

Thanks for all the info Richard. The original test with the 1080p clips were the DJ HD quicktime files without any additional compression and I did realize that I would need to recompress them at some point.

I have done some further testing and by reducing the resolution to 720p along with the PhotoJPG CODEC at 50% I was getting good performance with 2 layers playing back in sync without dropping frames. If I reduce the resolution even further, say to 640 vertical pixels, then I can get four layers playing back in sync simultaneously without any droped frames. I performed this test showing two halves on a blended 3:1 RP screen (15' x 45') and the quality between the 720 version and the 640 version was barely noticeable.

I will try the CODEC that you mention above and see how that works for me. Speaking of different CODECs, what do you know about H.264? It looks like a very promising new HD CODEC and I would like to try this with Catalyst as well. Been hearing a great buzz about this.

Check this out:

http://www.apple.com/quicktime/technologies/h264/

Best regards,

Scott Riley

[samsc]

I will try the CODEC that you mention above and see how that works for me. Speaking of different CODECs, what do you know about H.264? It looks like a very promising new HD CODEC and I would like to try this with Catalyst as well. Been hearing a great buzz about this.
Scott Riley

make sure you test the latest software build - m147 - there are some optimisations for higher definition codecs.

buzz yes - useful no.

h264 is not good.
try apple intermediate codec.
try different image sizes with this - and compare-

ignore the buzz - h264 is an internet codec- data rates are not contrained in a media server - what a media server needs is quick...

these are not the qualities one needs for a media server:

Ratified as part of the MPEG-4 standard (MPEG-4 Part 10), this ultra-efficient technology gives you excellent results across a broad range of bandwidths, from 3G for mobile devices to iChat AV for video conferencing to HD for broadcast and DVD.

all these advanced technologies mean its slow-

H.264 in QuickTime 7 for Tiger implements a set of advanced technologies and patent-pending techniques to create pristine video at low data rates. The H.264 encoder features:
Intelligent multi-pass encoding for the best possible results at the desired bit rate with the optimal number of compression passes.
Time-saving single-pass encoding for creating draft encodes, meeting impending deadlines and live encoding with QuickTime Broadcaster.
Peak-constrained VBR options for limited data-rate scenarios such as streaming and CD/DVD playback.
Advanced frame reordering (B-frame) support to more efficiently represent movie data.
4x4 integer transform for reducing traditional blocking and ringing artifacts, especially in areas of fine detail.
Improved intraframe prediction for more efficient compression of details and gradients in high-motion video.
Increased precision in motion estimation for crisp reconstruction of objects in motion.
Flexible block sizes in motion estimation for more efficient encoding of complicated motion in areas of fine detail.
Adaptively tuned in-loop deblocking filter for eliminating blocking artifacts, resulting in a smooth, clean image.

[OlliR]

I am quite impressed:

3 layers running 1920x1080p 25 fps with Apple Intermediate Codec!

That´s a really good result. Though Harddrives seem to have hard work - judging by the sound of them.

System setup: MacPro 8xCore 3G 4GB Ram internal 3x500GB SATA Raid Level 0

[ryanww]

I tried going into the sound output, and only the internal speakers are selected as that is all my computer has.. I tried it again, and still no audio. I generated a little PDF report so you can take a look at it and see if anything in it might be able to determine the problem. I know my speakers aren't broken either.. The audio on the clip is AAC mono 16khz. Could it possibly be because I am running the demo version as I haven't purchased it yet?

Thanks,
Ryan

[Spam Butterfly]

You need to set the layer you are using to Play Audio or Play Audio Loop in the play mode. You also ensure that the volume is up - this can also be controlled with DMX

[ryanww]

Well.. that would explain it.. I haven't ever played audio through it.. so that would explain it..

Thanks

[samsc]

Scott Riley

scott

did you do any tests with apple intermediate codec yet? and build m150?

thanks r

[SvenCRen]

scott

did you do any tests with apple intermediate codec yet? and build m150?

thanks r

Hey Richard,

I have not had an opportunity to test that codec yet. I should have some time and access to servers next week.

I will let you know how it turns out, I am looking forward to the prospect of a better performing codec for HD.

Best regards,
-scott

[samsc]

Hey Richard,

I have not had an opportunity to test that codec yet. I should have some time and access to servers next week.

I will let you know how it turns out, I am looking forward to the prospect of a better performing codec for HD.

Best regards,
-scott

the order of importance is

1. codec. if you get the wrong one it will never work.
2. hardware, cpu graphics card, disc.

apple intermediate codec works better on computers with at least 4 cores.