Welcome to the MacNN Forums.

Rychiar · Apr 30, 2005, 10:18 AM

anyone try those apple HD clips, I tried to wat ch the batman begins clip and it was just choppy as hell. I bought the new computer (imac g5 20 1.8) this year hoping to solve such problems, wtf. Quicktime is notorious for choking on large video files. If they updatre VLC to accomodate these files im sure theyll run fine.

Jacke · Apr 30, 2005, 11:25 AM

I haven't tried myself, but I'd imagine my gigahertz eMac wouldn't like them.

For future reference, try not to cross-post.

techtrucker · Apr 30, 2005, 03:35 PM

I'm getting choppiness on my iMac G5 with QT7, not just the apple clips but mpegs that played fine in 6.x. Sometimes it's worse than just choppy, playback pauses for 5-10 seconds at a time. Happens with multiple files. Stinks!

Rychiar · Apr 30, 2005, 04:39 PM

i had chopiness always in quicktime if i ever tried to play avi's but not mpegs, even with all the dvix codecs in. VLC is a great replacement howwver but these new HD files just make it crask...knew i shoulda waited and got a new powermac...

badtz · Apr 30, 2005, 05:52 PM

powerbook 667mhz, definitely can't watch it here

OwlBoy · May 1, 2005, 06:23 AM

Very smooth on my Dual 1.8 G5 with 1.25gb ram.

The standards of what is fast are quickly changing.

-Owl

Scooterboy · May 1, 2005, 12:48 PM

My PowerBook (check sig) cannot play the 1080p HD videos at anything more than a slide show pace. The 720p trailers are playable but not at anything like 24 fps, more like 12-15 fps. Frustating.

MaxPower2k3 · May 1, 2005, 01:34 PM

Apple links to the minimum requirements for playing the trailers on the page that lists them:

For 1280x720 (720p) video at 24-30 frames per second:
1.8 GHz PowerMac G5 or faster Macintosh computer
At least 256 MB of RAM
64 MB or greater video card

For 1920x1080 (1080p) video at 24-30 frames per second:
Dual 2.0 GHz PowerMac G5 or faster Macintosh computer
At least 512 MB of RAM
128 MB or greater video card

also, try some other trailers. I've heard some of the ones on that page aren't encoded as well as others.

Eug Wanker · May 1, 2005, 03:06 PM

Check my sig for the details, but it seems the bare minimum is:

720p24: G5 1.6 or dual G4 1.0 GHz

1080p24: dual G5 1.8

techtrucker · May 1, 2005, 03:49 PM

I've got mpegs saved locally that always played fine until QT 7. I was lazy and only did an upgrade to Tiger, giving some thought to doing an erase and clean install. My system was relatively new and uncluttered so I thought I'd be okay doing an upgrade, but at this point I'll try anything.

scottiB · May 1, 2005, 05:07 PM

Originally Posted by Eug Wanker

Check my sig for the details, but it seems the bare minimum is:

720p24: G5 1.6 or dual G4 1.0 GHz

1080p24: dual G5 1.8

My DP800 gets around 12fps in 720 and 5fps in 1080. I'm curious if it's the G5, itself, or the narrow memory bandwidth of the G4 that hampers things. The CPUs in my G4 were never pegged--usually between 125-150%. With 1080, though, it appears it needs the clock cycles to decode at 24fps.

edit:

Reading your blog, Eug, answers some of my Qs--thanks.

Eug Wanker · May 2, 2005, 10:21 AM

So, has anyone tried decoding 1080p with a 2.3, 2.5, or 2.7 Power Mac, using only ONE of the CPUs? (Using Apple's CHUD tools, you can turn off the 2nd CPU.)

I'm thinking a 2.7 GHz single G5 could most likely decode 1080p24 H.264. Maybe not 1080p30 though.

grovberg · May 2, 2005, 12:35 PM

Just out of curiousity, how many of these reports are for QT 7 under 10.3 and how many are under Tiger? Core Video could make a big difference, couldn't it?