Yes mpeg4 rather than h264 offers greater compatibility with older machines & versions of quicktime etc.
Your mpeg4 files wont necessarily be any larger than h264 ones, its just that at any given bitrate you can get better quality fromh264 than mpeg4. But many people use around the same bitrate for both h264 and mpeg4 (around 600kbits/sec, though some people use much lower). When going for a higher resolution, you will need to increase the bitrate or the compression artifacts will be more noticable. Its jut a case of playing around and getting the right balance (as thered be no point having a higher resolution if the final result is worse because of many more compression artifacts due to useing too low a bitrate). With h264 you are stuck with 320x240 type sizes on the ipod. Wheras for mpeg4 the maximum is actually defined by total number of pixels, a maximum of about 230400 pixels are allowed. So 640x480 wont work because that would be 307200 pixels. But a resolution like 544 x 408 that Taylor mentioned in an earlier post, will work and is the right 4:3 aspect ratio. Steve of Elbows --- In [email protected], "sdorfman.rm" <[EMAIL PROTECTED]> wrote: > > --- In [email protected], "Bill Streeter" <bill@> wrote: > > Fortunately, thanks to the popularity of the iPod and it's > > supporting software iTunes, quicktime isn't all that rare on PC's > > anymore. It's pretty standard in fact--for people inclined to > > consume online media. > > > > I currently post iPod compatible MOVs and Flash, but that may change > > soon. The ratio of views that I get is 50 to 1 favoring quicktime. > > Thanks, Bill. I like the idea of just releasing iPod compatible MOVs. I've been doing some > research on what codec & encoding settings to use with Apple Compressor. Care to share > what settings you use? > > The video blog I'm working on will be short (1-5 minute) videos. Because they're short, > I'm hoping to release videos at 640x480 size and still have a relatively small file for users > to download. But from what I've read, iPods can't handle 640x480, they can only handle > 480x480. Unfortunately, I don't have a video ipod to test on. Has anyone tried getting > 640x480 to work on a video ipod? > > MP4 vs. H.264: > Seems MP4 is the safer route (i.e. more users will be able to watch MP4 because 1. they > have quicktime 6, not 7, and 2. their old CPUs would choke on H.264). And since my > videos will be short, I don't have to worry as much about the larger file size and bandwidth > requirements. Am I making sense here? > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/videoblogging/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
