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Strange artifacts in some videos

A topic by pauliezmm created Mar 17, 2020 Views: 1,169 Replies: 3
Viewing posts 1 to 4

Hello, I am using DAIN APP 0.31 on fulldome videos (special format of video captured with a fisheye lens and used in digital planetariums). The algorithm performs great in terms of motion smoothness but sometimes, it produces strange artifacts. They typically occur in large homogeneous areas such as a blue sky (rarely, they occur elsewhere). Here's a sample:


Does anyone have a similar experience? Do you know of any workaround? I am using the GTX 1080 card, the video resolution is 3744x3744, 29.97 fps. I split into segments 624x624 pixels, use padding of 70-90 pixels, export to PNG. Any advice much appreciated.

Update: I tried reducing the video size to 624x624 pixels and the artifacts are not present so it seems to me that a) there is a bug in the splitting process, or b) the video segments needs more padding. Will do further tests...

Update: So, after some testing I found a solution. Changing the section size or padding doesn't help. The only workaround is to split the input video before actual processing. I use a combination of batch script and ffmpeg so this is not a big deal but I then have to run the DAIN process on all segments (25 segments in my case) manually.

Is there any way to control the DAIN app via the command line so that I could automatize the whole process? It would be extremely helpful for me!

Update: So, the manual splitting doesn't help after all. I found the artifacts even in small segmented videos. The most typical case is the blue sky. So it seems I cannot use the DAIN app on these videos. :-(