I found there are itag 171 and 172

[sunxvogy]

Could some one tell me what 171 and 172 format is?

below is my known formats list:

itag= video resolution/bitrate
value type ( w x h ) flags
===== ===== ==================
5 FLV 320 x 240
17 3GP 176 x 144
18 MP4 480 x 360
22 MP4 1280 x 720
34 FLV 480 x 360
35 FLV 640 x 480
36 3GP 320 x 240
37 MP4 1920 x 1080
38 MP4 2048 x 1080
43 WEB 480 x 360
44 WEB 640 x 480
45 WEB 1280 x 720
46 WEB 1920 x 1080
82 MP4 480 x 360 3D
83 MP4 640 x 480 3D
84 MP4 1280 x 720 3D
85 MP4 1920 x 1080 3D
100 WEB 480 x 360 3D
101 WEB 640 x 480 3D
102 WEB 1280 x 720 3D

133 MP4 320 x 240 VO
134 MP4 480 x 360 VO
135 MP4 640 x 480 VO
136 MP4 1280 x 720 VO
137 MP4 1920 x 1080 VO
139 MP4 Low bitrate AO
140 MP4 Med bitrate AO
141 MP4 Hi bitrate AO
160 MP4 256 x 144 VO

[Elite]

Can you pls. share the video id ?

[strex]

171 and 172 are webm audio as far as I know.

[Elite]

@strex So youtube is doing the DASH type audio-video muxing with webm also ?

[sunxvogy]

so strange... all vevo videos itag37 (1280p) are gone... the example video url:

http://www.youtube.com/watch?v=My2FRPA3Gf8

[BlackHoleSpain]

sunxvogy: itag 37 was removed by Google staff on October 17th 2013

[sunxvogy]

So there is no 1280p video can be downloaded?