1080p and 720p playback

[samsc]

Hi-def playback is possible at 25fps - just - if you render your footage using certain codecs.

Works on a single layer only. With a single raptor or single scsi drive

see

http://chaldee1.gotadsl.co.uk/~richa...read.php?t=183

you need to use the photojpeg codec at 50% quality...
pixlet doesnt work - its too slow.

[samsc]

Hi-def playback is possible at 25fps - just - if you render your footage using certain codecs.

Works on a single layer only.

see

http://chaldee1.gotadsl.co.uk/~richa...read.php?t=183

you need to use the photojpeg codec at 50% quality...
pixlet doesnt work - its too slow.

mjpeg codec just about works too.

[litemover]

Can get full speed with 4 drive raptor array using a variety of codecs, Pixlet at 86, DVCPRO50 comps in AE at 1280x720 best quality, even photo Jpeg.

4 drives make a huge difference.

CC

[samsc]

Can get full speed with 4 drive raptor array using a variety of codecs, Pixlet at 86, DVCPRO50 comps in AE at 1280x720 best quality, even photo Jpeg.

4 drives make a huge difference.

CC

yes. 4 drives makes a difference - what it does it push the data rate bottleneck down - until it reaches the processor bottleneck.
The point these converge is dependant on the codec /data rate relationship.

But it isnt going to give you more layers.
Because the drive latency stays the same - if it doesnt actually get worse.
A single drive can give better multiple file playback than multiple drives, if the data rate is below a certain threshold

The thing now preventing more layers is processor. - i think.
I got some more drives yesterday.

[samsc]

Can get full speed with 4 drive raptor array using a variety of codecs, Pixlet at 86, DVCPRO50 comps in AE at 1280x720 best quality, even photo Jpeg.

4 drives make a huge difference.

CC

what data rate did you see on your pixlet 86 movie?
And your photo jpeg files?

R

[litemover]

what data rate did you see on your pixlet 86 movie?
And your photo jpeg files?

R

Variable, I have many of them now, they range from 2.6 to 6meg/sec. Most of the ones that I have xtracted with the Heuris extractor from my JVC jyhd10u and encoded with quicktime using pixlet 86 range from 5.5 to 6, some of the HD artbeats clips that I have that were encoded with cleaner are much less 2meg to 3meg. For some strange reason, I cannot use cleaner to convert the MPG movies that Heuris extracts from the M2 files in the camera, all for HD but the results are like watching an I-max Movie when spread across 3 large screens and xy'ed to look as one seemless image.

Some play full speed all the time some fluctuate between full speed down to 28 to 21 to 18 to 31. The Data rates are variable, should I clean them to be non variable?

Here is an image of 1 movie from my JVC HD cam spread across 3 screens to give the illusion of 1 screen
Christian

[samsc]

nice image christian

[samsc]

Variable, I have many of them now, they range from 2.6 to 6meg/sec. Most of the ones that I have xtracted with the Heuris extractor from my JVC jyhd10u and encoded with quicktime using pixlet 86 range from 5.5 to 6,

try encoding with photojpeg.
its at least twice as fast as pixlet to decode.
and i cant spot the difference.
you will need to try encoding settings between 50% and 75%.
you will get more stable playback speeds- i think.

the stability of the playback speed with these codecs is well away from something i can control. its buried deep in quicktime.

[samsc]

Some play full speed all the time some fluctuate between full speed down to 28 to 21 to 18 to 31. The Data rates are variable, should I clean them to be non variable?

Christian

there is nothing you can do except try photojpeg.

also syncing up with variable data rates is next to impossible.
you were brave to try.

i wish i could help - but the only thing that will help me is faster macs.

[samsc]

DVCPRO50 comps in AE at 1280x720

Christian- i downloaded your dvc pro movie.
And its as i thought,
Someone is doing some behind the scenes fiddling.
Although you can create the movie at 1280x720 with the dvc-pro codec in After Effect ( i did mine in Compressor )
This isnt whats happening behind the scenes.
I think the decompressor is taking the movie at 720x480 and then scaling it up to 1280x720 but at playback time.
The information in the movie is only stored at 720x480.

Using Get Movie Properties in Quicktime player shows that your movie is stored at 720x480.
I have a pdf capture of the screen that shows this.