drbuzz0
30th January 2009, 19:30
Hello,
I have a video file which is 640 X 480 at 25 fps. The video is interlaced and has some very obvious interlace lines. So I try to transcode the video and deinterlace it to get rid of the horrible scan line artifacts. However, when I do so, I can't get a good deinterlace and every method I try gives horrible wave-patterns on the edge of things. It's very obvious.
I've tried just about every method. Blending, motion adaptive, motion compensation and so on. None of them seem to do any better. Even dropping fields does not help.
At this point I think I've figured out what is going on here: the video was taken on a European camcorder by a family member and then captured to a digital format. The video was apparently resized down to the NTSC resolution (but not framerate) but he didn't realize that you shouldn't do a standard resize on interlaced video. Therefore, the frames are all sized down and the original scanlines are blended together.
(And even worse.. he can't find the original tape this came from, so I'm stuck with this version for the time being).
Is there anything I can do to try to get this back to a descent quality viewable video? Or.. am I stuck?
I've tried resizing it back to PAL resolution. Not surprisingly, that didn't work. I tried unstacking the fields and then resizing and restacking. That didn't work either. I tried inverse telecline and, you guessed it, it didn't work!
I have a video file which is 640 X 480 at 25 fps. The video is interlaced and has some very obvious interlace lines. So I try to transcode the video and deinterlace it to get rid of the horrible scan line artifacts. However, when I do so, I can't get a good deinterlace and every method I try gives horrible wave-patterns on the edge of things. It's very obvious.
I've tried just about every method. Blending, motion adaptive, motion compensation and so on. None of them seem to do any better. Even dropping fields does not help.
At this point I think I've figured out what is going on here: the video was taken on a European camcorder by a family member and then captured to a digital format. The video was apparently resized down to the NTSC resolution (but not framerate) but he didn't realize that you shouldn't do a standard resize on interlaced video. Therefore, the frames are all sized down and the original scanlines are blended together.
(And even worse.. he can't find the original tape this came from, so I'm stuck with this version for the time being).
Is there anything I can do to try to get this back to a descent quality viewable video? Or.. am I stuck?
I've tried resizing it back to PAL resolution. Not surprisingly, that didn't work. I tried unstacking the fields and then resizing and restacking. That didn't work either. I tried inverse telecline and, you guessed it, it didn't work!