Function test_corrupt_video

tests/test_video_stream.py:361–375

Test that backend handles video with corrupt frame gracefully with defaults.

(vs_type: ty.Callable[..., VideoStream], corrupt_video_file: str)

def test_corrupt_video(vs_type: ty.Callable[..., VideoStream], corrupt_video_file: str):
    """Test that backend handles video with corrupt frame gracefully with defaults."""
    if vs_type == VideoStreamMoviePy and get_moviepy_major_version() >= 2:
        # Due to changes in MoviePy 2.0 (#461), loading this file causes an exception to be thrown.
        # See https://github.com/Zulko/moviepy/pull/2253 for a PR that attempts to more gracefully
        # handle this case, however even once that is fixed, we will be unable to run this test
        # on certain versions of MoviePy.
        pytest.skip(reason="https://github.com/Zulko/moviepy/pull/2253")

    stream = vs_type(corrupt_video_file)

    # OpenCV usually fails to read the video at frame 45, but the remaining frames all seem to
    # decode just fine. Make sure all backends can get to 60 without reporting a failure.
    for frame in range(60):
        assert stream.read() is not False, f"Failed on frame {frame}!"