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.m2v encoding
I was pressing my project to the .m2v format for dvd burning and was just wondering why the option “4mb vbr 2 pass” has to do basically two complete renders? What is the second pass actually doing that the first pass didn’t achieve?
Rameen Aryanpur
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1 Reply
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VBR= variable bitrate. The first pass is simply an analysis of the video, determining where more bits are needed and where less will do fine. Then the encoder makes the calculations based on the first pass, the target (4mb), minimum and maximum bitrates and does the encoding on the second pass.
4MB should only be used on movies about 105 minutes using PCM audio or 135 minutes using Dolby audio. Higher bitrates should be used on shorter movies….see the chart on my web.
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