2 Pass encoding compresses the video twice - the first time solely to determine how large each frame tends to be, the second time to actually compress with optimized frame size and/or quality.
This allows the encoding program to correct for variations in compressibility and maintain a more even Data Rate.
When combined with Variable Bit Rate, the encoding program can use the information to improve quality in difficult sections of the video.
1 comment:
Thank you for making this very clear! I'm working at a university helping with online courses. I'm helping them introduce video to their courses and capturing in HD and encoding FLV for our flash streaming server.
I'm going to continue reading your blog. Any new advancements with the Adobe cs4 media encoder?
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