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
iPod touch Please Help
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.
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.
