Jump to content
Sign in to follow this  
  • entries
    88
  • comments
    117
  • views
    62402

Theora video recording

Sign in to follow this  
dcosborn

280 views

I spent some time implementing Theora video recording via libtheora. My implementation is currently quite slow, mainly because of two things:
  1. I'm rendering off-screen at the specified video resolution, rather than simply grabbing the current framebuffer and scaling. This yields higher quality, but at a much reduced recording speed.
  2. My RGB to Y'CbCr 4:2:0 conversion uses floating-point calculations and no SIMD.
As a result, my frame-rate drops to about 4 fps during recording. Here's the YouTube video (poor quality), and the original video (16 MB). The original video seems to crash the Theora DirectShow filter, but it plays fine under MPlayer.
Sign in to follow this  


0 Comments


Recommended Comments

There are no comments to display.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!