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Flux · 11th November 2009, 15:50

Usually it would be good idea to use multiples of original video resolution, if they are re-encoded for streaming or something else were you need lower resolution. Most videos are from standard TV broadcasts or cameras which have fixed resolutions and scaling them to arbitrary resolution can produce loss of quality instead going for multiplies like 720x576 -> 360x288 or if visible video is less than that, then divide it with half resolution.

Fixed bitrate like 1200 kbps or whatever, will produce variable quality videos because the amount of movement, noise or colors will require different amount of bitrate to look about same as original video. There is no way around that.

11th November 2009, 15:50	#7 \| Link
Flux Registered User Join Date: Jul 2004 Location: Finland Posts: 109	Usually it would be good idea to use multiples of original video resolution, if they are re-encoded for streaming or something else were you need lower resolution. Most videos are from standard TV broadcasts or cameras which have fixed resolutions and scaling them to arbitrary resolution can produce loss of quality instead going for multiplies like 720x576 -> 360x288 or if visible video is less than that, then divide it with half resolution. Fixed bitrate like 1200 kbps or whatever, will produce variable quality videos because the amount of movement, noise or colors will require different amount of bitrate to look about same as original video. There is no way around that. __________________ Interlaced, 50 Hz and 60 Hz, 24 fps film. These are evil artifacts from the past which still possess modern video technology.