Choppy and slow 4k playback on a decent machine

Brumboy · 4 Dec 2016 at 07:08

Hi there, for some reason 4k playback on my computer is choppy and slow and therefore unwatchable.

I tried it with various media players and got the same result every time.

No idea what to do, anyone know a fix for this please?

Thanks

HoneyBadger · 4 Dec 2016 at 10:22

What's your bandwidth?

Padraig · 4 Dec 2016 at 19:16

The bit rate on the 4k content might be too high.

Brumboy · 5 Dec 2016 at 05:52

Bandwidth? I'm playing a file from my SSD.

I'm testing my 4k monitor and downloading samples. The sample I've downloaded is 62 seconds long, 2706kbps bit rate and is 400mb in size.

chickadee · 5 Dec 2016 at 07:51

Rossuk89 said:
Bandwidth? I'm playing a file from my SSD.

I'm testing my 4k monitor and downloading samples. The sample I've downloaded is 62 seconds long, 2706kbps bit rate and is 400mb in size.

Have you tried mediaplayerclassic? I find VLC and other media players do weird stuttering from time to time but MPC always works.

lude1962 · 5 Dec 2016 at 13:31

my pc is basically the same as yours, can you link the file?

Brumboy · 6 Dec 2016 at 09:41

chickadee said:
Have you tried mediaplayerclassic? I find VLC and other media players do weird stuttering from time to time but MPC always works.

When I open the file with MPC there is no video showing just audio :eek:

lude1962 said:
my pc is basically the same as yours, can you link the file?

http://4ksamples.com/elysium-2013-2160p-1-minute-sample-footage/

There you go mate

Brumboy · 6 Dec 2016 at 10:01

Ok so I downloaded the latest codecs and that's fixed the problem, although VLC is still choppy but MPC plays it just fine.

Thanks for the help guys!

lude1962 · 6 Dec 2016 at 10:40

its says audio is Title : DTS-HD MA 7.1 – Blu-ray CEE
7.1 can cause playback probs (choppy), downloading now

lude1962 · 6 Dec 2016 at 10:52

works fine with this player

andicole0 · 6 Dec 2016 at 11:39

Choppy on my oldish laptop, will try my games PC later.
Andi.

andicole0 · 6 Dec 2016 at 12:13

Better on my games PC but still not chop free

Core i7 5930, Asrock X99X Fatal1ty, 16GB Corsair DDR4, Samsung SSD 950 Pro M.2, 2 x EVGA GTX980Ti SLI

Andi.

iakhtar · 6 Dec 2016 at 18:05

960 is the only maxwell card that has the hardware for hevc 10bit decoding, the rest 970/80/ti have to rely on cpu grunt.

chickadee · 6 Dec 2016 at 19:29

Rossuk89 said:
Ok so I downloaded the latest codecs and that's fixed the problem, although VLC is still choppy but MPC plays it just fine.

Thanks for the help guys!

Did you see that the test footage actually states:

*NOTE* This file is encoded using x265 and will require a player such as MPC-BE to play them, It will not work in VLC.

EDIT: Works flawlessly on my machine with maybe 20% CPU usage and 10% GPU using MPC and no extra codecs.

Brumboy · 9 Dec 2016 at 13:16

Nope I did not see that, my mistake!

At least I know there is nothing wrong with my PC. I will watch out for the notes on files.

Cheers everyone