DS Forums

 
 

iPod touch Please Help


Reply
Thread Tools Search this Thread
Old 07-05-2009, 19:57
Medz_661
Forum Member
 
Join Date: Oct 2008
Posts: 33

hi I’m new Please Help I have a good mp4 convertor i need to know whats the best screen Resolution bit rate for ipod touch 2nd gen thanks for any advice
Medz_661 is offline   Reply With Quote
Please sign in or register to remove this advertisement.
Old 07-05-2009, 20:38
L34HC1M
Forum Member
 
Join Date: Jan 2008
Posts: 368
They are two entirely different things?

480x320 is the resolution
L34HC1M is offline   Reply With Quote
Old 11-05-2009, 00:14
PrinceGaz
Forum Member
 
Join Date: Mar 2006
Location: Newcastle-upon-Tyne
Posts: 8,175
As has been said, 480x320 is the iPod touch native screen resolution. A "good" mp4 converter is probably iPhone / iPod touch aware and will have presets designed to automatically spit out a file optimised for the device without you needing to worry about resolutions and bitrate though.

Be aware that movies are usually 16:9 or even wider-screen, and 16:9 would translate to a resolution of 480x270 (with black-bars at the top and bottom when watching it on the iTouch). Similarly, many TV shows are still standard aspect-ratio 4:3, and are best viewed at about 428x320 (black-bars to the side here).

As for bitrate, once you've got the resolution right, you'll soon know what is the best compromise between file-size and picture-quality. You can get down to fairly low bitrates and it will still look quite good, but there comes a point after which even a small further reduction introduces serious blockiness, bluriness etc. If your mp4 converter allows it, rather than setting the bitrate, setting the "quantizer" (good word for Scrabble ) level is generally a better approach as it will ensure the quality remains more or less the same regardless of the video it is dealing with, by using a low bitrate for scenes where little is happening, and a much higher bitrate where there is lots of action.
PrinceGaz is offline   Reply With Quote
 
Reply




 
Forum Jump


All times are GMT. The time now is 16:38.