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Journal Journal: Current Youtube video formats, specs, links and more!

I downloaded the video files for each format from youtube. There are currently 5 format tags that seem to currently be being used.. no tag, fmt6, fmt13, fmt17, fmt18... As far as I can tell they're only currently encoding videos to "notag" for youtube's main site, and fmt18 (h.264) for the iPhone presumably. New videos get encoded to these two formats. You can access the formats by appending &fmt=18 to the end of a youtube URL.

Example: == notag == fmt18

Here's a screenshot that compares the formats:

And here are download links and details on each of them :)

No format tag (standard):
320x240 @ 29.97 fps
Flash video (Sorenson h.263)
MP3 Audio (22.05KHz, mono)
FLV container

Format 6 tag:
448x298 @ 29.98fps
Flash video (Sorenson h.263)
MP3 Audio (44.1KHz, mono)
FLV Conatiner

Format 13 tag:
176x144 @ 15fps
H.263 Video
AMR Narrowband Audio (8KHz, mono)
3gp container

Format 17 tag:
176x144 @ 12fps
MPEG-4 Video (simple profile)
MPEG-4 (AAC) audio (22.05KHz, mono)
3gp container

Format 18 tag:
480x320 @ 29.97fps
MPEG-4 Video (H.264)
MPEG-4 (AAC) audio (44.1KHz, STEREO!)
mp4 container

Coolness :-)

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