What decoder you use?
Internally the video data are stored in 16x16 blocks then 1920x1088 is stored in 120x68 blocks, but the last 8 lines are invalid (your green lines).
The decoder must crop this 8 lines by default but maybe have problems with your Canon source.
A workasound is crop this 8 lines yourself.
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BeHappy, AviSynth audio transcoder.
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