encoding H.264 video (or similar) on the iPhone directly?

Question

What's the best way to encode video (with audio) on the iPhone? It looks like QTKit isn't available... so I might have to link with ffmpeg, but ffmpeg doesn't look like it encodes H.264 (judging from their home page.)

If it is possible, I'm also curious how fast I can expect it to perform on the ARM. I imagine it might take minutes to encode a 20sec movie.

Answer 1

与x264结合使用时，ffmpeg和mencoder都将对H2.264视频进行编码，但是我想让它全部运行在iPhone上绝对是一场噩梦，更不用说它在运行时的性能了。

Answer 2

A while ago I wrote an AVI encoder for the iPhone that used raw file I/O. I just started work on a QuickTime encoder that encodes BMP data into a quicktime container. If it is H.264 you want to encode, I would try making a server that uses QTKit and having your app connect to that for conversion.