replace in with ==

Author: Daniel Flores

test/test_ops.py

@@ -1486,7 +1486,7 @@ def test_video_encoder_against_ffmpeg_cli(self, tmp_path, format):
         # If FFmpeg selects a codec or pixel format that uses qscale (not crf),
         # the VideoEncoder outputs *slightly* different frames.
         # There may be additional subtle differences in the encoder.
-        percentage = 94 if ffmpeg_version == 6 or format in ("avi") else 99
+        percentage = 94 if ffmpeg_version == 6 or format == "avi" else 99
 
         # Check that PSNR between both encoded versions is high
         for ff_frame, enc_frame in zip(ffmpeg_frames, encoder_frames):