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i think "[source].avi i" is wrong... remove i;
ffmpeg -i [source].avi -f mp4 -vcodec mpeg4 -b 250000 -s 480?320 -acodec aac -ar 24000 -ab 64 -ac 2 [destination].mp4and, for me ( macos user, ffmpeg via port ) :
ffmpeg -i [source].avi -f mp4 -vcodec mpeg4 -b 250000 -s 480?320 -acodec libfaac -ar 24000 -ab 64 -ac 2 [destination].mp4i also add;
-r 30000/1001my own config is ( for 4:3 aspect ) :
ffmpeg -i source-xvid.avi -s 480x320 -aspect 4:3 -b 768k -ab 64k -ar 22050 -r 30000/1001 OUT.mp4( for 16:9 )
ffmpeg -i source-xvid.avi -s 480x320 -aspect 16:9 -b 768k -ab 64k -ar 22050 -r 30000/1001 OUT.mp4Excellent feedback... Thanks !
what if i don't want to put width and height but a size in scale?
This following article aims to share a step by step guide on how to convert AVI to iPhone 4S supported MPEG-4 or H.264 so as to successfully play AVI on iPhone 4S or play 1080p AVI on iPhone 4S at http://www.bigasoft.com/articles/how-to-convert-to-play-1080p-avi-on-iphone4s.html
it also applies to play AVI on iPhone 4S/4/3GS/3G