Hi all,
I work for a charity supporting Deaf people. I need to show a video on fire safety that was signed in BSL. The original PAL DVD isn't available, but there is a copy uploaded on YouTube in 2015. However, the video is heavily interlaced. The video I downloaded is H264 MP4 720×480 at 30 fps.
I tried to deinterlace it using Handbrake, but I'm not even sure it's at all possible. If it is, in fact, possible, how can I do it? I set the following options: “output FPS” to “60 fps”, “Interlace Detection” to “Default”, “Deinterlace” to “Yadif”, and “Preset” to “Bob”.
Thanks in advance.
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It is possible.
Realize that the video file itself is no longer interlaced. It is now progressive scan, and the artifacts your see are left over from a previous encoding (probably whoever ripped the DVD didn't deinterlace). The scan lines are "baked in" now so de-interlace won't work because the information is no longer available.
You want a decomb filter now. It attempts to remove comb artifacts, which is not a perfect process but it's usually good enough. -
The video cannot be properly deinterlaced any more. About the best you can do is decimate and blur the two fields together where there is motion/combing.
before:after
[Attachment 66426 - Click to enlarge]
Video sample attached.Last edited by jagabo; 25th Aug 2022 at 07:33. Reason: improved video sample
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