Table 1. Recommended Flash Video Encoder Specs with VP6 Codec: High-Motion Video
High-Motion Video Total Bit Rate Video Bit Rate Audio Bit Rate Frame Size Frame Rate Video/Film Source Keyframe Interval*
Modem – Streaming** 40K 24K 16K mono 160 x 120 7.5/8 fps 8 sec.
Modem – Progressive 80K 64K 16K mono 160 x 120 7.5/8 fps 8 sec.
Small 220K 188K 32K mono 240 x 180 15/12 fps 8 sec.
Medium 400K 336K 64K mono 320 x 240 30/24 fps 8 sec.
Large 850K 754K 96K stereo 480 x 360 30/24 fps 8 sec.
X-Large 1400K 1304K 96K stereo 640 x 480 30/24 fps 8 sec.

* Start with an 8-second frame interval for all, and work down as needed.

** No real choice for 56K modem streaming. You must stay under 40K and you shouldn't take MP3 audio under 16K.

Table 2. Recommended Flash Video Encoder Specs with VP6 Codec: Low-Motion Video
Low-Motion Video Total Bit Rate Video Bit Rate Audio Bit Rate* Frame Size Frame Rate Video/Film Source Keyframe Interval
Modem – Streaming 40K 24K 16K mono 160 x 120 7.5/8 fps 8 sec.
Modem – Progressive 50K 34K 16K mono 160 x 120 7.5/8 fps 8 sec.
Small 100K 68K 32K mono 240 x 180 15/12 fps 8 sec.
Medium 180K 132K 48K mono 320 x 240 30/24 fps 8 sec.
Large 350K 286K 64K mono 480 x 360 30/24 fps 8 sec.
X-Large 600K 504K 96K stereo 640 x 480 30/24 fps 8 sec.

* Lots of room for adjustments here. For the interview I encoded, I could have used 32K audio throughout.