Add test for checking mv projection clamping

This clip crashes on frame 67 if the projection is not clamped (ref: dav1d!1023 (merged)). Incorrect motion vector selections starting from frame 65 eventually leads to symbol overread on frame 67.

Concerns I have with merging this:

1. At least on my machine, this test takes 10s to run, which is significantly longer than every other test. For comparison, the rest of the tests take 60s total for my machine to run. I'm not sure how to fabricate a smaller test case with the same issue, but that would probably be more ideal.
2. This is a very short clip from a Japanese television show. I am not sure what is the policy regarding using test data sourced from copyrighted materials.

Thanks for the sample. Based on your patch, I think I generally understand how this sample causes the bug you encountered, and I'll try to make some time in the near future to generate a synthetic one to reproduce the same bug in less time & filesize.

I guess the near future never came. Any update on this?

See !90 (merged).

assigned to @rbultje

added 2 commits

• 0b1ae65e - 1 commit from branch videolan:master
• 0b55434f - Add test for checking mv projection clamping

Compare with previous version

mentioned in merge request !90 (merged)

See !90 (merged) for reduced version.

closed