I'm a bit nervous...

M

mhood

Veteran
I downloaded the set of native MOVs of the dog catching the frisbee and the only one I can play smoothly with QT 7.5 is the VGA 640x480. I did get the 720p @ 24fps to play smoothly once with Nero ShowTime...once.

My machine is a Dual Core T7700 at 2.4GHz with 4GB ram running Vista 64bit so it's not a total dog.

I want to be able to edit and even play back footage from my 7D when it gets here. Do I need to upgrade my Premiere Pro to CS4.1? Do I need to buy and use NeoScene? What do I need to do to at least play back the native MOVs?

What are the chances of a workflow subforum?
 
My machine is slower than yours. Can absolutely not play back the native files. What I do is I make 640x360 proxies with mpeg streamclip and edit those in PPro CS3. Before rendering the final movie I replace them with the original clips. Tried it with the 7D clips. Works great. It's a poor man's solution.
 
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First i convert the footage to an good mjpeg codec. After that its working relatively smooth in pp cs4 (dvcprohd project) - even with some color grading.
Quad, vista64, 8gigs ram
 
Native files are h264 which uses long GOP compression. There will be an I-frame that is a frame made of real pixels followed by many A and B frames that are only text data describing how groups of pixels (G.O.P.) from the I frame are moved around. There 'should' be two I-frames per second and all the others are text.

Long GOP compression is a lot of work on the computer's processor and this is exaggerated by the high bitrate. If you transcode to a codec where all frames are I-frames you should have no problems. I don't know for PC's but with a mac you could transcode to prores.

EDIT: while I was typing capice beat me to it!
 
...so it's Cineform NeoScene for Windose? Or will I save myself the grief of conversion if I upgrade to CS4.1 Windows?

My D90 AVIs run smoothly and edit flawlessly on an old dog of a machine running Premiere Pro 1.5. All files (original and edited) play back fine in WMP on that old machine (you'd laugh out loud if I posted the system specs ;-). If I go NeoScene coversions, can I expect the same from my D7 stock?
 
I have a NVIDIA Quadro FX 570M card that shows 256 MB of adapter RAM. Whether or not it's "CUDA-compatible", I haven't a clue.

This is on my lenovo T61p as described above...the one that won't play back the native 7D MOVs.
 
Instead of NeoScene you can also use FFMPEG which is opensource and free. I think it works better than NeoScene. Doesn't flatten out the video NeoScene.
 
> EDIT: while I was typing capice beat me to it!

Yes, but you explained it very well.
 
except it wasn't quite accurate. there's not really any text data in the stream but even if there were it's not just how pixels are moved around but how the difference between an artifically moved block and the real one can be encoded for lower entropy. speaking of blocks, gop means group of pictures and refers to the pictures between the i frames (including the i frame). the "groups of pixels" are called macroblocks. :)
 
Let me qualify that...

That's a great way to explain long GOP compression to n00bs in just 3 sentences. Seriously, it's a hard concept to wrap your head around if you are new to it.
 
I'm not nearly as interested in the technical workings of GOP compression as I am a way to play it smoothly. LOL

I have this gr8 camera coming but don't have a way of playing the footage it shoots...what's wrong with this picture?
 
StormFactory said:
Instead of NeoScene you can also use FFMPEG which is opensource and free. I think it works better than NeoScene. Doesn't flatten out the video NeoScene.
Click to expand...

So what lossless MJPEG codec do you use with FFMPEG? And what is it that Premiere CS4.1 is doing to playback the long GOP h.264 files? Does it convert upon import (like FCP) or can you actually use the native files off the camera? Also, how can I insure my display is "CUDA compatible"?

Thanks for the help ya'll...I appreciate it.
 
mhood said:
I have a NVIDIA Quadro FX 570M card that shows 256 MB of adapter RAM. Whether or not it's "CUDA-compatible", I haven't a clue.

This is on my lenovo T61p as described above...the one that won't play back the native 7D MOVs.
Click to expand...



Yes your card is CUDA compatible.

It uses driver = NVIDIA_DEV.040C.01

The latest version of cuda driver is version 190.38 A.K.A CUDA 2.3

It may or may not directly install, if not, you have to extract the drivers and edit the nv4_disp.inf file to include the command

NVIDIA_DEV.040C.01 = "NVIDIA Quadro FX 570M"


After that, I would purchase the
Core Codec, as it accelerates AVCHD

You will also get an icon in your toolbar to show when cuda is playing.
 
mattsand said:
except it wasn't quite accurate. there's not really any text data in the stream but even if there were it's not just how pixels are moved around but how the difference between an artifically moved block and the real one can be encoded for lower entropy. speaking of blocks, gop means group of pictures and refers to the pictures between the i frames (including the i frame). the "groups of pixels" are called macroblocks. :)
Click to expand...

Source: 'Text data' as per the guru Larry Jordan, his very words on h264 and long Gop, HD Workflows title. If I'm wrong he's wrong. I was a bit surprised myself at him using this phrase, maybe this was his euphemism for ascii data.
http://www.larryjordan.biz/
My mistake on GOP = pictures not pixels, I meant to type 'pictures' but was rushing.
 
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