You will sometimes find a video on YouTube which has interlacing artifacts; that is, if you view a video at 1080p, you will notice some combing. This usually happens when a 1080i50/1080i60 video isn't deinterlaced before uploading. As an experiment, I sometimes download these videos and try to deinterlace them to 50/60 fps myself; however, as these videos are progressive, HandBrake has to guess the field order, and gets it wrong. The effect is that the video goes forwards 2 frames, the goes backwards 1 frame, then goes forward 2 frames etc.
Steps to reproduce the problem (If Applicable):
- Download any video that exhibits combing at 1080p. For this experiment, I used Lasith Malinga's four-ball 4-wicket hat-trick.
- Import downloaded video to HandBrake.
- Set output framerate to twice the original framerate and set deinterlace preset to Bob.
- Start Encode.
HandBrake version (e.g., 1.0.0):
Operating system and version (e.g., Ubuntu 16.04 LTS, macOS 10.13 High Sierra, Windows 10 Creators Update):
HandBrake Activity Log