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Stuttering playback in panning scenes (x264 encoded material)

tvOS Video playback support subforum
undead1512
Posts: 10
Joined: 05 Apr 2016, 10:16

Stuttering playback in panning scenes (x264 encoded material)

Post by undead1512 » 03 May 2016, 06:54

Hello MrMc.
I am facing a playback issue with APTV4/MrMC4.1. In short, I ripped a TV show (PAL DVD) with makemkv and the playback is flawless. However, after encoding the material with handbrake, the stuttering starts.
As this is not a handbrake forum, I won't get into the encoding details but I can assure you that I've used hours trying to find the setting that would fix the issue.

I tested the encoded material with Raspberry PI2 + kodi 15.2 aswell and the problem was reproducible but after enabling the playback setting 'Adjust display refresh rate' (in Kodi), the stuttering was gone. I guess there's no similar setting in MrMC that would fix the stuttering ?
I haven't gathered any MrMC debug logs as I am not blaming MrMC on the stuttering (as the source material plays out fine) but rather looking for a workaround for the encoded material. If there's no equivalent for 'Adjust display refresh rate' in MrMc, then maybe a hint/pointer on what kind of encoding to feed MrMC so that it will be happy camper and stop the stuttering :)

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davilla
Team MrMC
Posts: 2343
Joined: 26 Oct 2015, 17:01

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by davilla » 03 May 2016, 15:29

sample please

undead1512
Posts: 10
Joined: 05 Apr 2016, 10:16

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by undead1512 » 04 May 2016, 15:52

Here you go:
https://mega.nz/#!BFAQ1KoT!AbYsZLMIoMUV ... STAQIXRQ6U

The panning (aswell as the stuttering) starts at approx 00:05 and ends around 00:09 when the camera movement from left to right is finished.
The same clip plays out fine with two regular Kodi 15.2 setups that I have lying around.

If you have any ideas on what's causing the stuttering, please let me know.

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davilla
Team MrMC
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Joined: 26 Oct 2015, 17:01

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by davilla » 04 May 2016, 16:52

Just to be clear, this is AppleTV4 ?
What refresh is you HDTV setup for ?

undead1512
Posts: 10
Joined: 05 Apr 2016, 10:16

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by undead1512 » 04 May 2016, 19:04

Yes. AppleTV4+Samsung UE55D8005.
1080p60Hz.

Premium
Posts: 42
Joined: 09 Dec 2015, 12:10

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by Premium » 23 Sep 2016, 15:05

Same issue here.. same setup,but 65" tv.

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davilla
Team MrMC
Posts: 2343
Joined: 26 Oct 2015, 17:01

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by davilla » 23 Sep 2016, 15:17

On my Samsung, I had to turn off all the silly picture 'enhancing' features on the Samsung UHDTV to get rid of crap induced artifacts.

Lollypop
Posts: 18
Joined: 25 Feb 2017, 22:54

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by Lollypop » 21 Mar 2017, 22:57

I had the similar problem with my samsung's auto motion setting being turned on but to my surprise, when i checked the option "sync playback to display" the stuttering went away and playback is smooth as silk.

Cheers

cosmoxl
Posts: 731
Joined: 12 Dec 2015, 14:16

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by cosmoxl » 22 Mar 2017, 01:27

Lollypop wrote:
21 Mar 2017, 22:57
I had the similar problem with my samsung's auto motion setting being turned on but to my surprise, when i checked the option "sync playback to display" the stuttering went away and playback is smooth as silk.

Cheers
yep, I find that for the apple tv sync to display works wonders. I actually have all the smooth motion turned ON for my old Vizio TV and it's beautiful.

Lollypop
Posts: 18
Joined: 25 Feb 2017, 22:54

Re: Stuttering playback in panning scenes (x264 encoded material)

Post by Lollypop » 23 Mar 2017, 14:21

good stuff. But i am wondering how "display to sync" has been implemented? Is it special filter that is used or some special coding? As we can't alter Atv refresh rate, but i think this display to sync modifies that playback speed to match the refresh rate of the monitor.. (I could be wrong though)

maybe davilla can shed some light on this..

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