Now in 1280*720 (720p).
It is done simply by adding "&fmt=22" (without quotes) to the end of the video URL.
Not all videos are yet available in this format though but here are some sample ones to compare especially in full screen mode:
Normal:
http://www.youtube.com/watch?v=Mgan4rt7ZHw
720p:
http://www.youtube.com/watch?v=Mgan4rt7ZHw&fmt=22
Normal:
http://www.youtube.com/watch?v=zlfKdbWwruY
720p:
http://www.youtube.com/watch?v=zlfKdbWwruY&fmt=22
According to MediaInfo they are using some quite strange encoding settings though:
Video
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : No
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 4mn 28s
Bit rate mode : Variable
Bit rate : 2 060 Kbps
Nominal bit rate : 2 000 Kbps
Maximum bit rate : 11.8 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16/9
Frame rate mode : Constant
Frame rate : 30.000 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.075
Stream size : 66.0 MiB (90%)
Title : (C) 2007 Google Inc. v06.24.2007.
Writing library : x264 core 54
Encoding settings : cabac=0 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=5 / brdo=0 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / threads=1 / nr=0 / decimate=1 / mbaff=0 / bframes=2 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=1 / wpredb=1 / bime=0 / keyint=60 / keyint_min=25 / scenecut=40 / rc=abr / bitrate=2000 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=0.60 / qpmin=10 / qpmax=38 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30
Encoded date : UTC 2008-06-19 11:35:09
Tagged date : UTC 2008-06-19 11:35:09
Main profile instead of High.
About 2 Mbps bitrate which is quite low for such a resolution.
No CABAC, low SubME, no RDO, no Trellis.
And it looks like they are using a quite old version of x264.
But hey, that's better than the FLV1 crap we were used to have for years