To hit this target we use 1280x720 instead of HD, VBR 2 pass, 1.4MBit average data rate and audio encoded mono at 96k. * I have one client that needs most encoded programs to be lower than 50MB in size. If you do use two-pass, I recommend using a bitrate of 15 Mbps to 25 Mbps. Yes, two-pass encoding on YouTube is noticeable as it has nothing to do with the bitrate of the video, but the quality of the video after the bitrate is applied, essentially reducing the amount of artifacting visible. 2 pass VBR is generally not worth the extra time it takes*. Then, depending on the length of your video, maybe about 45 minutes or less, use the two-pass preset, and if it is longer, use the non-two-pass preset. As long your encodes are set to reasonable datarates and you don't specifically need the absolute smallest possible encodes (file size). Both usually provide better (or as good) encodes at significantly lower oevral file sizes than CBR (Constant Bitrate). It then uses this analysis data on the second pass when actually encoding to assign more 'bits' to the scenes that have (say) high complexity motion and less 'bits' to (say) static scenes with no or little motion.ġ pass VBR just encodes 'on the fly' and can't encode frames 'knowing' what's further long in the program.Įffectively 2 pass VBR will give you better encodes at a slightly lower datarate than 1 pass VBR. The first pass in a Variable Bitrate 2 pass encode is an analysis pass which looks at the video content of the program and looks for high motion, low motion and complexity.
