[youtube] add filesize extraction for video-only webm formats and f264 mp4

[sdsucks]

id: RtoitU2A-3E

F:>youtube-dl -v -w -c -i -F --youtube-include-dash-manifest RtoitU2A-3E
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-v', '-w', '-c', '-i', '-F', '--youtube-include-dash-manifest', 'RtoitU
2A-3E']
[debug] Encodings: locale cp949, fs mbcs, out cp949, pref cp949
[debug] youtube-dl version 2014.06.26
[debug] Python version 2.7.5 - Windows-7-6.1.7601-SP1
[debug] Proxy map: {}
[youtube] Setting language
[youtube] RtoitU2A-3E: Downloading webpage
[youtube] RtoitU2A-3E: Downloading video info webpage
[youtube] RtoitU2A-3E: Extracting video information
[youtube] RtoitU2A-3E: Downloading DASH manifest
[info] Available formats for RtoitU2A-3E:
format code extension resolution note
139 m4a audio only DASH audio 49k , audio@ 48k (22050Hz), 1.20MiB (worst)
171 webm audio only DASH audio 89k , audio@ 48k (44100Hz), 2.11MiB
172 webm audio only DASH audio 128k , audio@256k (44100Hz), 3.09MiB
140 m4a audio only DASH audio 129k , audio@128k (44100Hz), 3.18MiB
141 m4a audio only DASH audio 255k , audio@256k (44100Hz), 6.32MiB
160 mp4 256x144 DASH video 110k , video only, 2.70MiB
242 webm 240p DASH video , video only
133 mp4 426x240 DASH video 247k , video only, 6.06MiB
243 webm 360p DASH video , video only
134 mp4 640x360 DASH video 610k , video only, 14.91MiB
244 webm 480p DASH video , video only
135 mp4 854x480 DASH video 1130k , video only, 27.38MiB
247 webm 720p DASH video , video only
136 mp4 1280x720 DASH video 2219k , video only, 54.65MiB
248 webm 1080p DASH video , video only
137 mp4 1920x1080 DASH video 4152k , video only, 102.38MiB
271 webm 1440p DASH video , video only
264 mp4 1440p DASH video , video only
272 webm 2160p DASH video , video only
138 mp4 3840x2160 DASH video 24846k , video only, 596.93MiB
17 3gp 176x144
36 3gp 320x240
5 flv 400x240
43 webm 640x360
18 mp4 640x360
22 mp4 1280x720 (best)