Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd B&H Deal Finder...
Buy other stuff at Amazon.com...
Memory Upgrades for 2019 Mac Pro - Save Up to 65% vs Factory Costs
877-865-7002
Today’s Deal Zone Items... Handpicked deals...
$799 $499
SAVE $300

$449 $379
SAVE $70

$1000 $850
SAVE $150

$799 $299
SAVE $500

$249 $234
SAVE $15

$290 $250
SAVE $40

$1149 $799
SAVE $350

$1199 $999
SAVE $200

$1299 $1099
SAVE $200

$2799 $2449
SAVE $350

$3899 $3899
SAVE $click

$18599 $17099
SAVE $1500

$369 $239
SAVE $130

$1500 $999
SAVE $501

$764 $399
SAVE $365

$600 $450
SAVE $150

$1499 $629
SAVE $870

$1499 $629
SAVE $870

$7995 $7495
SAVE $500

$420 $170
SAVE $250

$700 $700
SAVE $click

$2999 $2399
SAVE $600

$1699 $899
SAVE $800

$169 $99
SAVE $70

$1498 $998
SAVE $500

$200 $150
SAVE $50

$370 $300
SAVE $70

$999 $949
SAVE $50

$1099 $999
SAVE $100

$580 $340
SAVE $240

Save Big $$$$ on Memory for 2019 Mac Pro

Up to 65% better pricing than Apple

Lloyd recommends 32GB RDIMM modules for most users (more expensive LRDIMMS are for 512GB or more).


Optimizing Handbrake for Faster Video Conversion

Last updated 2010-09-02 - Send Feedback
Related: CPU cores, Mac Pro, optimization, software, video

Handbrake converts DVD video to formats that can be played on the computer, the iPod/iPad/etc or any conventional player.

While Handbrake makes far better usage of multiple cores than most programs, it doesn’t scale much beyond 9 cores (as of August 30, 2010). Perhaps a future release will address this limitation.

This approach makes sense on the 12-core Mac Pro, with its ample CPU core reserves. It will likely show little or no advantage on 4-core machines, or might even be slower (not investigated, an exercise for the reader).

Shown below are timed results encoding the same four movies totaling about 3 hours of video, using these settings. The faster results for each Mac Pro used two copies of the Handbrake application running at the same time. Surprisingly, even the 6-core machine benefits from this approach, though not as much.

For a big queue of jobs, the 26% time savings is very attractive (640 vs 874).

Results will vary somewhat with the settings and material chosen for conversion, but both the 12-core and 6-core Mac Pro show clear benefits; 28% for the 12-core and 12% for the 6-core.

With dual apps, the 12-core machine cuts the runtime by 40% as compared to the 6-core.

Two Handbrake applications simultaneous compared to one.
Using the Handbrake beta build as of August 30, 2010.

How to do it

Here’s how:

  1. Duplicate the Handbrake application;
  2. Launch both copies of Handbrake;
  3. Add video to be converted to the queue in each Handbrake program, balancing the material between them so that both queues have approximately the same work to be processed.
  4. Start both copies running.
OWC Holiday Stocking Stuffers

Order today by 5 PM Central, get by XMAS!

Macs, iPhone, sound, accessoris, Beats, Homepod, much more!


CPU core usage

Shown below are two copies of Handbrake running simultaneously on the 12-core.

This is what you want to see on a 12-core system. The less than helpful display of all 24 virtual cores suggests that there is untapped CPU power, but that’s not really true; there are twelve hardware cores, and they are being fully used; virtual cores (hyperthreading) are slightly better than useless.

CPU core usage with Handbrake, two applications simultaneously
2010 Mac Pro 12-core @ 3.33GHz

Settings

Settings used for encoding the video.

Setting used for testing Handbrake
OWC Thunderblade Thunderbolt 3 SSD

Blazing fast, up to 16TB.

YEE HAH!



√ No more slow and noisy hard drives!
OWC Envoy Pro EX SSD
Blazingly fast Thunderbolt 3 SSD!

Up to 4TB capacity, USB-C compatible.

USB-C model also available


Great for travel or for desktop!
OWC Accelsior 4M2 PCIe SSD
6000 MB/sec!
Mac or PC.


Ideal for Lightroom, Photoshop, video.
Capacity up to 16TB!
View all handpicked deals...

QNAP TS-253Be 2-Bay NAS Enclosure
$449 $379
SAVE $70

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2020 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__