Smarter video upload quality

[koke]

The app should make the user more aware if it's going to upload a really big file, and offer a smaller low quality version.

One posible way to do this:

If user is trying to upload a video over 3G and it's more than 20 MB, we ask:

The video you are trying to upload is probably going to take a long time to upload. Do you want to upload a lower quality version instead?

Always / Only this time / No, thanks

Details to be discussed:

• Only 3G or always ask?
• Size limit should be similar to the app store download limit over 3G
• "Optimized" quality could be 720p or 480p