Motion Blur Lines Live TV on Amazon Fire TV

General Discussions Plex Features
1

Hey group, is it normal to have motion lines that are almost like refresh lines on Live TV on Amazon Fire TV? I have tried different antennas and everything is super smooth on the computer,Roku Ultra, and PS4. I can’t figure out how to fix it.

2

R U talking about something that looks similar to this video (look at his hands)?

929×538 216 KB

3

Yes, is it an interlace issue?

4

@mrbeaubo said:
Yes, is it an interlace issue?

That was my first guess.

5

Probably so, so what are my options if AFT doesn’t allow deinterlace? Can I force plex server to deinterlace live tv before sending on?

6

Yes that is a interlacing issue you see. The content needs to be deinterlaced so you don’t see this. You either need to use a client that can deinterlace the video (e.g. PMP or ShieldTV) or you have to post process the files and de-interlace them yourself.

Of course there is nothing you can do about LiveTV for now except to use a client that can deinterlace properly. Maybe down the road Plex can transcode and de-interlace the video properly on the fly. My primary device of choice is the ShieldTV which does a good job on this type of content.

Interlaced content recorded (DVR) can be post processed to be de-interlaced and made progressive so that it plays back fine on all clients. This is what I do myself. What you also want to be aware of is that software de-interlacing on the fly (or hardware) can often use a method known as BOB deinterlacing that in a nutshell disregards half the frames to get rid of the artifacts. I post-process offline to change the 29.97 fps interlaced content into progressive 59.94 fps which is much smoother and keeps all fields in the original broadcast vs discarding half the content. This of course also helps when that content has to be transcoded for a remote client since there is more bits available in the source.

If you watch the thread in my sig you’ll see I’ll be posting a new version of the conversion scripts in the next couple of days which handles this de-interlace function automatically as it converts the video to H.264/MP4s.

Hope you got something useful out of this post. Unfortunately due to the way broadcasting originated anything in SD or 1080 will be interlaced while 720 is progressive (in the USA at least).

7

Thank you cayars!