Here’s how to do an export. As with importing, following each step is important to make sure the video quality is optimized (in this case, for vimeo or youtube upload) and the sound stays in sync.
Before you export, make sure all the tracks you want to export are highlighted blue.
Go to file>export
Name the file
Export setting should be “send to QT movie”
Export as: Quicktime movie
Click custom. Then go into “format options.”
Check “video.” Go into settings.
Compression type: MPEG-4 video
Bump up the compressor quality to high
Frame rate: Current (default)
Key frames every 24 frames (default)
Data rate: automatic
Leave “filter” alone.
Size should be “current.” Make sure “deinterlace source video” is NOT checked.
Check sound but leave settings alone – sound should be uncompressed.
Check Video and Audio
Width and height: should be 1280×720 (this will make the file size smaller, which is good)
Color levels: 601/709
Display aspect ratio should be native dimensions.
Then save. Then save again and the export will start.