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For the PSP I would generally suggest that you pick resolutions which maximise the horizontal resolution of the screen. This translates into 416x176 for the most part, for footage with both 16:9 and 2.35:1 aspect ratios alike (although you may wish to use 368x208 to preserve more vertical detail for...

Seriously 24 fps and no sound sync issues? Gotta try this when I get home! :)

Nice little proggie there runtime, thanks for it. But, when I encode movies with 416x176 and patch them the framerate is choppy on PSP, it works but stutters alot. Same file on PC is perfectly ok before and after patching. Encoded with 3gp_converter with self modified .ini, 2pass xvid. Framerate co...

Yup sucks big time - its a shame Sony crippled playback in this way, but on the upside it does seem as though there may be some way to exploit their fixed size buffer ;) Have a go encoding horizontal resolutions greater than 320, should result in a sharper widescreen image as not so much horizontal ...

The hack basically patches the three locations within the first 0x1000 bytes of the .MP4 file, essentially forcing the file to appear as a 320x240 res file when the PSP makes its check. This appears to be sufficient to get the PSP to playback the remainder of the file at the appropriate resolution. ...

Following the work marlov74 started, I did a bit more research and found that the PSP is able to support most resolutions provided they are a multiple of 16. I've tried several so far including 320x176, 368x208, 384x160 and 416x176. Temporary Link: http://runtime.dyndns.org/psprez-b1.zip PSPREZ is a...