The Flow of Consciousness

VLC 1.1.0 was just released few hours ago. VLC is a fantastic media player and I use it on all of the operating systems I use (Ubuntu Linux, Mac OS X, Windows 7). It’ll play just about any format and do it wonderfully. It’s easier to use than Rhythmbox, Quicktime, or Windows Media Player for watching movies or iTunes for quick listening of an audio file.

Anyway, among new features are VP8 support (Google’s newly open sourced video format), lossless MPEG-4 support, AMR-NB support for audio in cellphone video, CDDB/CDTEXT on Windows when listening to CDs, and lots more.

A big feature in this release of VLC is the ability to decode video using the computer’s graphics card. You’ll need an nVidia graphics card to really benefit from it, though.

I decided to give it a quick test myself before upgrading from VLC 1.0.5 on my Windows 7 box. I played back a 720p HD rip of Adventureland and Back to the Future 3. Both were encoded with 23.97 fps H264 for video. Adventureland used DTSfor audio, while Back to the Future 3 used a52. I watched about 5 minutes of each and watched the Task Manager. For both movies, the CPU usage stayed between 15% and 30%, while memory usage stayed around 92,000 kilobytes.

Then, I upgraded to VLC 1.1.0 and enabled GPU support in the preferences. I watched the same parts. Both videos used the slightly less CPU, but less memory.

“What gives?” I thought. So, I did some research. I found the wiki article on VLC GPU Decoding and found that a video card using VP2 or newer is required. There’s a link to a table on Wikipedia showing the version of PureVideo support in each video card. Unfortunately, my 8800 GTX doesn’t support VP2.

Oh well, I guess I get to wait for the next video card I buy. However, if you own a video card made in the last 3 years, you probably have support for it, so go forth and enjoy low CPU usage when you’re watching videos.