bbc.com: ad specs

Pre-roll

	Pre-Roll Embedded Video (Video On Demand)
Availability	BBC News site, BBC Travel, BBC Future, BBC Mundo, BBC Arabic and BBC Russian.
VAST Compliant	Yes, VAST 1 and VAST 2. Also for companions.
Companion Banner (display only)	300 x 60 pixels (w x h) and 300 x 250 pixels (w x h) 300 x 60 not available on BBC Travel or BBC Future Accepted formats: GIF, JPEG or SWF. File size: 40KB max. Rich Media Vendor tags supported (see Approved Third-Party Vendors PDF below); javascript only, not iFrames. Audio not accepted. Expandables not accepted. Animation and looping: 30 seconds max. Black border required.

	Browser (low)	Browser (high)	IPTV	iPhone, iPad, iPod, Android: 3G/WiFi
Video Format	FLV (H.264)	FLV (H.264)	MPEG-4 (H.264)	MPEG-4 (H.264) / MPEG-4 (H.264)
AVC	Baseline level 3	Baseline level 3	Baseline level 3	Baseline level 2 / Baseline level 3
Length	15 to 30 seconds	15 to 30 seconds	15 to 30 seconds	15 seconds maximum
Aspect Ratio	16:9	16:9	16:9	16:9 / 16:9
Resolution	512 x 288	512 x 288	688x384	400x224 / 400x224
Video Bitrate	320 kbps	720 kbps	1400 kbps	128kbps / 300kbps
Frame Rate	25 FPS (PAL)	25 FPS (PAL)	25 FPS (PAL)	25 FPS (PAL) / 25 FPS (PAL)
Audio Format	AAC-LC	AAC-LC	HE-AAC	AAC-LC / AAC-LC
Channel	Mono	Mono	Stereo	Mono / Mono
Audio Sample Size	16 bit (44.1kHz)	16 bit (44.1kHz)	16 bit (48kHz)	16 bit (44.1kHz) / 16 bit (44.1kHz)
Audio Bitrate	48 kbps	80 kbps	96kbps	48 kbps / 96 kbps
Companion	Yes (excludes VAST 2.0)	Yes (excludes VAST 2.0)	No	No / No
Protocol	RTMP-T	RTMP-T	HTTP Progressive	HTTP Progressive / HTTP Progressive
Comments	When using VAST, all advertisements must be hosted on a high performance content delivery network