H.264 encoding tremendously slow. Any advice.

I've got some DV footage I want to put online using he H.264 codec, but compressor is treachorously slow. It took 41 hours to compress a 25 minute video.
I am tempted to just go to mp4 compression, but I prefer H.264.
Here's the compressor 2 settings I used:
Name: H.264 700Kbps Streaming @.50
Description: H.264 for high-bandwidth streaming
File Extension: mov
Audio Encoder
AAC, Stereo (L R), 48.000 kHz
Video Encoder
Format: QT
Width: 320
Height: 240
Pixel aspect ratio: square
Crop: None
Frame rate: (100% of source)
Frame Controls:
Retiming: Nearest Frame
Resize Filter: Linear Filter
Deinterlace Filter: Motion Adaptive
Adaptive Details: On
Antialias: 0
Detail Level: 0
Field Output: Same as Source
Codec Type: H.264
Multi-pass: On, frame reorder: On
Pixel depth: 24
Spatial quality: 75
Min. Spatial quality: 50
Key frame interval: 150
Temporal quality: 50
Min. temporal quality: 50
Data rate: 0.586 (Mbps)
Fast Start: on
Compressed header
requires QuickTime 3 Minimum
I am using:
G5 Dual 2/ 4 GB RAM/ Compressor 2// ATI Radeon 9600 XT

Yes, H.264 is very slow to encode. That's how they get the great quality out of it.
The preset you have is fine, but as was mentioned, the frame controls for resizing, deinterlacing and retiming will slow things down exponentially if you increase them.
Only advice to give. Get a faster Mac.

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I'm looking for your current thoughts on speeding up H.264 encoding. I'm currently using FCE HD 3. Last night I made a 560x315, hour-and-twenty-minute web video for a client--it took over 14 hours to encode. Not the end of the world--usually I do 10-minute videos, but still...
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kovach wrote:
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I'm thinking I will take the Norton back and demand a refund for misleading me. It doesn't qualify this on the box either.
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You can mitigate those threats by following commonsense practices
Delegating that responsibility to software is an ineffective defense
Assuming that any product will protect you from those threats is a hazardous attitude that is likely to result in neglecting point #1 above.
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Is this really necessary, can you tell me what are the benefits.
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Premiere Pro and Adobe Media Encoder running slow

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I'm having trouble with CS4, which is running significantly slower than CS3 did on a older machine. The CS4 suite is installed on a Dell Precision M6400:
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My project has 4 15-16 minute sequences. The sequences are in DV NTSC, 29.97 fps, My scratch disks are set to a folder on the C: drive. Media Cache Files and the Media Cache Database points to a folder on the D: drive.
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Before my machine broke down, I found that it took 5 hours to render 33 minutes of HDTV albeit as it went along it transcoded from AVCHD to a Microsoft HD format for Vista-only. Another interesting thing is that I found that the longer this render ran the slower it became, the estimated time started at 3 hours but the actual was five and the last one third took maybe 3 hours. Because the machine broke after that run I couldn't figure the bottleneck. For my machine bear in mind that at the repair shop we found that the Quadcore had only half the necessary electrical power plugged in, the monitor software showed however that it constantly ran around 90% of whatever capacity that reduced power supply permitted. Now then we can puzzle over why it got slower and slower and yet CPU consumption remained consistent and near to full capacity, memory was not the bottleneck because that was constant at 6.4G. But you can say that this was maybe performing like a Dualcore and was hitting some sort of wall, if you had a 1 hour render with that rate of degeneration of performance factored in what would happen to the render time, and for 3 hours you could be running indefinitely. I hope when the machine comes back the correct power supply will make it behave like a Quadcore should for this type of application. Anyway I have two theories for the degradation. First is just that PrProCS4 was getting its knickers in a twist and thereby just doing more computation per minute of video to be rendered as time went by, maybe internal resource management related to OO-type programming maybe, or related to disk IO falling behind, both these theories have problems, for the latter the CPU usage should then have dropped also.
Anyways, you need really a Quadcore system and blazing fast disk to work fully with AVCHD commercially, we found an external SATAII disk so if I were you I would just go get one and move on with your life.
Message du 03/06/09 16:08
De : "Jim Simon"
A : "JONES Peter"
Copie à :
Objet : Premiere Pro and Adobe Media Encoder running slow
For AVCHD you MUST have FAST disks.
AVCHD actually has a lower data date than DV. You need lots of CPU muscle, but disk speed is really not a factor specific to AVCHD. Anything that works for DV will work just as well for AVCHD (and HDV as well).
>

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