HTML5 Video in Safari -

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little bit confused @ moment, have 2 .mp4 files, both h.264 encoded video.

 | #safari | video 1 | video 2 | | windows | failed  | played  | |   osx   | played  | played  |

my code

<video width="550" height="400" controls>     <source src="test/charlie.mp4" type="video/mp4" />      <source src="test/charlie.ogv" type="video/ogg" />    nope. </video>

video 1

 status: http/1.1 200 ok date:   wed, 27 jun 2012 09:19:02 gmt    server: apache/2.2.22 (debian)   last-modified:  wed, 27 jun 2012 08:06:41 gmt    etag:   "aff04e8-49c7f3-4c36fb1f12640"   accept-ranges:  bytes    content-length: 4835315  connection: close    content-type:   video/mp4

video 2

 status: http/1.1 200 ok date:   wed, 27 jun 2012 09:18:37 gmt    server: apache/2.2.22 (debian)   last-modified:  mon, 28 dec 2009 05:06:33 gmt    etag:   "aff04eb-45de48-47bc2de762840"   accept-ranges:  bytes    content-length: 4578888  connection: close    content-type:   video/mp4

the ffmpeg command using video 1 is

ffmpeg -y -i input.avi -vcodec libx264 -r 24 -preset medium -crf 20 -bufsize 20m -acodec libfaac -ac 2 -ar 44100 -ab 128k out.mp4

anyone seen kind of behaviour before?

-preset medium looks bit suspicious. exactly? iiuc h264 depends on [levels](http://en.wikipedia.org/wiki/h.264/mpeg-4_avc#levels] have varying support amongst devices , browsers.


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