There are multiple de-interlacers in FFmpeg the one I use is the YADIF filter. In Handbrake, there’s a Filters tab that offers two options (Decomb and the preferred Yadif, for Yet Another De-Interlacing Filter). On the right, you see the Field Options dialog set to Always Deinterlace, which largely resolves the problem. On the left, you see the interlaced footage in the Premiere Pro preview window. Deinterlacing to the RescueĪ technique called deinterlacing is the cure and it’s a simple function provided by most editors and/or encoders. When there is substantial motion during that period, as there was in Figures 1 and 3, you see interlacing artifacts. However, the fields are not shot at the same time they’re shot either 1/60th or 1/50th a second apart. So, whenever you output for streaming, you have to combine the fields into a single frame. However, computers can’t display interlaced video, they can only display complete frames. When displayed on an analog TV set, each field is displayed in sequence, so you’re actually seeing 60 impressions per second for NTSC, 50 for PAL, which enhances smoothness. A Sony tutorial showing how two fields create a single frame. Each field contains 1/2 of the scan lines from the video file, the first field the odd lines, the second field the even lines. The figure defines interlacing, which involves two fields shot 1/60th of a second apart (for NTSC, 1/25 for PAL). Figure 2 is a frame from an excellent tutorial by Sony that distinguishes between interlaced and progressive formats. Deinterlacing artifacts create two hands. However, this video was shot in 2018 in an interlaced mode for television distribution, and whoever produced it for the web didn’t de-interlace. When working with DV footage back in the day, the artifacts seen in the speaker’s hand in Figure 1 was a frequent problem. Click to view at full resolution.ĭeinterlacing – You Have a Problem When Two Hands Appear The three approaches to scaling and the results.
This file will look normal when displayed on a computer monitor, phone, or Smart TV. Click the figure to view it at full resolution.
0 kommentar(er)
