Force Interlace Mode on 29.97p Content?

[echorelay]

I’ve done a ton of searching for this subject and maybe I’m using the incorrect terminology, but I’m hoping someone can advise accordingly on this.

In short, I have an HDDVR and everything 1080i or 720p looks great. No issues.

I also have TVE and anything 720p looks outstanding @ 60fps.

My issue is with TVE content that is presumably 1080i coming into Channels @ 29.97fps and not being considered interlaced. Because of this, it doesn’t appear the deinterlace functionality is being triggered and I’m left with terrible judder that my eye cannot unsee.

Maybe this doesn’t effect everyone equally, but I’ve noticed if I push the feed through VLC (http://X.X.X.X:8089/devices/ANY/channels/6000/stream.mpg?codec=copy&format=ts) and force enable deinterlacing (linear), the experience is much better.

Is there a way to manually tell Channels DVR to turn on the deinterlace filter?

Thanks!

[tmm1]

Which TVE channels specifically?

TVE is transmitted using h264 and is always progressive. Its possible some stations are not deinterlacing before converting to h264. Can you check the network website to see if the stream there has the same issue?

[mjitkop]

@tmm1

Can you check the network website to see if the stream there has the same issue?

Nick Jr. has this problem (see Nick JR. De-interlacing issue) and everybody would like to check on their website directly but they have no public link available on their website to watch their stream.

What link does Channels use to get the Nick Jr. stream?

[echorelay]

TVE NBC/CBS (the 1080i ones). Fox and ABC are fine (the 720p ones). - Chicago locals.

Also NFL Network, Paramount Network and everything Pluto TV except maybe their 24fps movies (this is not every channel I notice this on, just the ones off the top of my head.)

Basically, if I can open "Show Stats" and see 29.97 (TVE) or 30 (Pluto), I know I'm in for a bad time.

[echorelay]

I don't necessarily think this is the issue I'm encountering. I've watched interlaced video that didn't have the deinterlace filter on, and you see the lines referenced in those photos most prominently during motion. This isn't that -- this is judder that is most commonly experienced when taking 60fps content and converting it to 30fps, thus losing half the frames.

My goal here is that even if I've lost the chance to recompile the video in it's original interlaced format (because presumably the broadcaster is treating TVE poorly -- looking at you, NFL network), if I can manually turn on the deinterlace filter (even in blend mode), then I can better smooth out the motion judder. It won't look as good as YTTV NFL Network, but it would be better.

Something to consider?

[mjitkop]

Got it. Thank you for the detailed explanation.

[echorelay]

Just an update - today I’ve noticed my CBS TVE channel watching NFL this afternoon coming in at 59.940 fps. I’ve changed nothing.. so maybe the networks are? Or has Channels changed something?

[jaidenc]

CBS's Paramount+ & TVE feeds are now all at 1080/60p.

[Edwin_Perez]

ATSC 3.0 is also 1920x1080 Frame Rate 59.940.Audio 5.1

[echorelay]

Did this happen recently? Did I miss an announcement? Lol

[jaidenc]

CBS streams were at 1080/60p until they reverted to 1080/30p a few months ago for some reason. Now they're back at 1080/60p. I don't think anything has been publicized or announced about it.

[echorelay]

This matches my experience. I thought I was doing something wrong. Thank you for corroborating!

[mjitkop]

I confirm that TVE WCBS switched back to 1080p 59.94fps ~10mbps around January 13th after they downgraded to 1080p 29.97fps ~5mbps at the end of November.
Nice to see they are back to better quality.

[closernin7]

Sorry to revive an old thread but having this sam eissue lately with TVE. Specifically MTV and Comedy Central. They are both brodcasting in 1080p 29 fps. The picture is clear but any movment produces lines all over. It is doing this on my Shield pro and Google TVs. Any solution to fix this so i dont have to manually change anything on my tv.