webm is not 1fps

[shawnl]

'''
$ youtube-dl -v
[debug] System config: []
[debug] User config: []
[debug] Command-line args: [u'-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2015.06.04.1
[debug] Python version 2.7.10 - Linux-4.2.0-14-generic-x86_64-with-Ubuntu-15.10-wily
[debug] exe versions: avconv 11.4-6, avprobe 11.4-6, rtmpdump 2.4
[debug] Proxy map: {}
Usage: youtube-dl [OPTIONS] URL [URL...]
$ youtube-dl -F https://www.youtube.com/watch?v=NOyUiuQRVS0
[youtube] NOyUiuQRVS0: Downloading webpage
[youtube] NOyUiuQRVS0: Extracting video information
[youtube] NOyUiuQRVS0: Downloading DASH manifest
[info] Available formats for NOyUiuQRVS0:
format code extension resolution note
171 webm audio only DASH audio 132k , audio@128k (44100Hz), 83.62MiB
140 m4a audio only DASH audio 135k , m4a_dash container, aac @128k (44100Hz), 102.82MiB
141 m4a audio only DASH audio 262k , m4a_dash container, aac @256k (44100Hz), 204.20MiB
278 webm 256x144 DASH video 202k , webm container, VP9, 1fps, video only, 84.11MiB
160 mp4 256x144 DASH video 264k , 13fps, video only, 88.44MiB
133 mp4 426x240 DASH video 284k , 25fps, video only, 195.36MiB
242 webm 426x240 DASH video 286k , 1fps, video only, 119.71MiB
243 webm 640x360 DASH video 555k , 1fps, video only, 217.19MiB
134 mp4 640x360 DASH video 611k , 25fps, video only, 231.08MiB
244 webm 854x480 DASH video 954k , 1fps, video only, 362.81MiB
135 mp4 854x480 DASH video 1112k , 25fps, video only, 459.82MiB
247 webm 1280x720 DASH video 1896k , 1fps, video only, 672.37MiB
136 mp4 1280x720 DASH video 2211k , 25fps, video only, 876.16MiB
248 webm 1920x1080 DASH video 3251k , 1fps, video only, 1.14GiB
137 mp4 1920x1080 DASH video 4169k , 25fps, video only, 1.64GiB
17 3gp 176x144
36 3gp 320x240
5 flv 400x240
43 webm 640x360
18 mp4 640x360
22 mp4 1280x720 (best)
'''

[yan12125]

It's exactly what reported by Youtube, and youtube-dl can do nothing about it.