Export at 854x480, using PAR of 1.0, is the first rule of thumb for SD widescreen for PC or web playback.
I just checked in Adobe Media Encoder CS6 and under H.264, there is a preset for Vimeo Widescreen SD and it specifies 640x360, so see if you have Vimeo presets and that will simplify life. Scroll way to the bottom of the list as they are alphabetical.
You may not have that H.264 preset in CS5, so here are the specs it shows:
VBR 2-Pass, Target 2.00, Max 2.00
AAC 320kbps, 44k Stereo
.mp4 file extension
Safe Harbor Computers
You can export in 720x480 widescreen but make sure the crop setting in the Export Settings is set to 16:9.
Jeff and Ann,
Success...thank you for your advice.
I used the specs for the H.264 preset in Jeff's posting...he was correct, the Vimeo Widescreen SD preset does not appear in CS5.
- Mike Mc -