I have rendered all the frames of my animation. I entered them into the sequence editor, and added some cross effects to fade in/out. I hit the ‘do sequence’ button and hit ‘anim’ to generate my file.
it all works. except that the final output is half the size. all of my rendered frames are the correct size.
So, for some strange reason, the video sequencer was reducing my frame sizes in half again. Setting the output framesize to twice my original framesize got me the correct size (ie: 640x480 original size, set to 1280x960).