|Adobe Flash HD-Video GPU Acceleration Guide|
|Articles - Featured Guides|
|Written by Servando Silva - Edited by Olin Coles|
|Wednesday, 30 December 2009|
Page 5 of 10
As I´ve told you at the beginning, DXVA is targeted to use a mid-low GPU in a system so it can match a high CPU performance when playing HD content. If you try using CPU, you´ll need at least a Core 2 Duo or AMD equivalent to watch it stutter-free. If you own a low-end system, HD content playback is nearly impossible, but if you have a mid-low GPU that meets the required series then you´re done because that´s the clue for HD. Now, thinking on our readers, the tests are targeted for 2 kinds of audiences:
Playing music, watching image galleries, reproducing your favorite videos, movies, and surfing on the internet while still having some power to play from time to time is the reason HTPCs were done. From all this, a CPU can do them all without problems, even playing DVDs, but HD is the present and a low-end CPU or even a mid-grade CPU won´t be able to smoothly reproduce 1080p content. Let´s check our test systems and you will quickly understand why I choose them now.
Test System (High-End)
Test System (Low-End ION-based HTPC)
I won´t really show lots of graphics and numbers. Based on what we want to check, the important value is the CPU usage while watching HD videos. Other than that, I´ll show you some image comparisons in order to see IQ with and without GPU usage.
We used the latest Official Adobe Flash Player version 10.0.32.18 for non DXVA tests and Adobe Flash Player 10.1.51.45 for the DXVA tests. While these both where the latest versions available before the tests, Adobe updated both official and BETA versions some days ago. Download latest Adobe Flash Player Versions on the next links:
For our Flash tests we used a pair of videos which everyone can use and test. Youtube was selected because it is the biggest Flash-based site on the web, and it´s getting very common on social networks like facebook or others. Since Youtube added 1080p support in November we are using 1080p videos for the CPU usage tests. The same videos in 720p resolution are used for the Image Quality tests. The reason behind this is that 1080p videos normally don´t get any difference when enhanced with the GPU. For example, a Blu-Ray disc won´t see lots of IQ enhancements when using DXVA because the source is High-Quality already. In the other hand, if you enhance a DVD or a 720p or lower video, chances are that you see a big difference between enhancing your video with GPU and not doing it. The videos used for our Adobe Flash Tests are:
As you can see, when pressing the HD button on Youtube, you can select either 720p or 1080p. More and more videos will be uploaded at 1080p the next months. CPU usage tests were done while reproducing Big Buck Bunny animation @ 1080p resolutions and measuring the CPU usage average after the credits. IQ tests were done with both Big Buck Bunny animation and New Moon Scene at 720p resolution.