Motion track image does't appear in render I make sure the transparent checkbox was hit, but the only thing it appears in render is this.
The images used in the workspace are for reference only.
Go to compositing workspace, check Use Nodes and thenShift + A &gt; Image Sequence.
Then Shift + A &gt; Viewer and connect image sequence to the viewer and Composior node. If the image size doesn't fit, you can try to use Scale node, I am not that sure if that's the right name
The basic node setup for tracking is described here:
Transparent rendered object over tracked background