Export - match source one pixel short - Gimme my pixel!
I'm attempting to export from Premiere Pro CC in a specific resolution per client specification. This client will use the video in an online virtual expo to promote his business. The requested resolution is 560x315 pixels which I recognize as a 16:9 ratio when aspect is set to 1x1 square.
I created a new sequence with a square pixel ratio and set up height and width accordingly 560x315. Then I dropped the clip (.mov file created in iMovie at 29.97fps, 1280x720, 1.0 ratio) into the timeline and used the "set to frame" function to reduce the scale and fit the frame. Everything seems fine until export.
Now when exporting, I'm using the preset "Match Source - Medium bitrate". I want the file to be small. But here's the issue... The auto calculated height is now set to 314, rather than 315. Even when I manually adjust this, it snaps back to 314. It will snap to 316 too, but not 315. Seems strange, and maybe irrelevant to me. But still, I don't understand and therefore I gotta know.
Why does this happen?
I thought maybe it had something to do with even/odd numbers of pixels so I tried doubling the resolution. Turns out, Premiere does the same thing. This time 1120x630 becomes 1120x628.
Where's that pixel going?
Really appreciate any insight.
Using:
Premiere Pro CC V11.1.0
iMac 27in Late 2015
3.2 GHz Intel i5
24gb 1600 DDR3
AMD Radeon R9 M380 2048 MB
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