user16150: This is a pretty simple question yet i couldn't find the answer to it anywhere. 
How does ffmpeg's coordinate system work? Meaning - for all operations such as crop and overlay, is the (0,0) point at the bottom left or top left?
Thanks!

user1871: Top left.
Pixels in a raw video stream are stored left to right, top to bottom. And all filters work on uncompressed frames, so that's the easiest way to setup the co-ordinate system as well.

16150: <p>This is a pretty simple question yet i couldn't find the answer to it anywhere. 
How does ffmpeg's coordinate system work? Meaning - for all operations such as <code>crop</code> and <code>overlay</code>, is the (0,0) point at the bottom left or top left?</p>

<p>Thanks!</p>
 1871: <p>Top left.</p>

<p>Pixels in a raw video stream are stored left to right, top to bottom. And all filters work on uncompressed frames, so that's the easiest way to setup the co-ordinate system as well.</p>
