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I have to make videos accessible to Blackberry, iPhone and web users. After some initial research I figured that .MP4 seems to be the best format to do this in.

However, my question is: What is the best way to go about resizing videos for each platform? Is it best to provide one standard size for all three platforms? Or should I detect user agents and resize?

Any ideas would be fantastic.

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up vote 1 down vote accepted

I would suggest one size for all mobiles. YouTube videos never fit my iPhone perfectly - but with the iPhone you can scale up to remove the black bars at the side. I'm not sure about formats, but you might want to look at HTML 5 video.

For the web, Flash video is still the norm unfortunately, although some browsers support HTML 5.

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Thanks for the answer! I ended up using one size to fit all as you suggested. – Russell Dias Sep 18 '10 at 1:12

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