Vegas: First 3 seconds Stutter and other issues

K

KnoxHotch

Well-known member
I'm borrowing a HMC150 from a friend (looking to buy one when i have the money) and I've been editing with vegas pro 9 demo. This camera is AMAZING, editing raw avchd from the camera works fine, especially at 720/30p with playback set to "preview/half". However, the playback gets very stuttery in the first 3 seconds of every clip and then smooths out to full speed. It's not a buffer issue since I can start playback midway through the clip at full speed.

Also, I've only read one suggestion so far for dealing with the fact that 720/30p footage is stored in a 60p stream and that was to "disable resample" on the clips, but i can't see that it makes any difference.

I know my system is not ideal for editing the raw clips, but i'd like to avoid transcoding:
Sony Vegas Pro 9 64-bit Demo (I own 8 Pro)
Windows 7 RC1 64-Bit
HP Pavillion dv9500t Laptop
Core 2 Duo t7300 @ 2.0ghz
4gb ddr2 667 memory
120gb system drive (7200rpm)
160gb data drive (5400rpm)
320gb fw400 external drive
 
i'm guessing it IS a buffer issue. that no matter where you start, it has to quickly load some video into the buffer to playback.

neither your cpu nor your 'data' drive are very fast, so they could account for it.
 
KnoxHotch said:
I'm borrowing a HMC150 from a friend (looking to buy one when i have the money) and I've been editing with vegas pro 9 demo. This camera is AMAZING, editing raw avchd from the camera works fine, especially at 720/30p with playback set to "preview/half". However, the playback gets very stuttery in the first 3 seconds of every clip and then smooths out to full speed. It's not a buffer issue since I can start playback midway through the clip at full speed.

Also, I've only read one suggestion so far for dealing with the fact that 720/30p footage is stored in a 60p stream and that was to "disable resample" on the clips, but i can't see that it makes any difference.

I know my system is not ideal for editing the raw clips, but i'd like to avoid transcoding:
Sony Vegas Pro 9 64-bit Demo (I own 8 Pro)
Windows 7 RC1 64-Bit
HP Pavillion dv9500t Laptop
Core 2 Duo t7300 @ 2.0ghz
4gb ddr2 667 memory
120gb system drive (7200rpm)
160gb data drive (5400rpm)
320gb fw400 external drive
Click to expand...

I think its the speed of your PC. You are running the bare minimum for AVCHD editing. You really need a quad core or i7 will give you 8 cores.
 
OK..its not pc speed.. Now my i7 is doing the same thing. Its just the software. It did not do this on my AMD machine...this is strange.
 
Well, obviously i don't have the computing power for perfect editing, but I did some experimenting...

I went back to vegas pro 8.1 (also 64-bit) and the editing is much smoother and lacks this glitch, and scrubbing is very close to real time, while playback is good. The Edius 5.1 demo also is missing this glitch and playback is just a bit smoother than vegas, although transcoding to canopus hq works great and the files also open in a vegas timeline (oddly only audio in vegas 9.00.

When i get the chance (after I can afford my own hmc at the end of sumer) i'm going to drop a t9500 in my laptop for a bit more power and an external 1tb raid box.
 
1. I can confirm the 3 second stutter on my 4 production machines, which include 2 4ghz core i7 machines with 12gb of ram. It's a minor annoyance for all the other gains of Vegas 9. Yes, I use the x64 version.

2. The "disable resample" hack makes a BIG difference in both overall resolution and motion. You have to notice it first, before it will become obvious. Of course I have a bunch of people here who cant see the difference... sigh.

-Adam
 
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