# Why does this video stutter?

**URL:** <https://forums.plex.tv/t/why-does-this-video-stutter/780993>\
**Category:** Plex Players\
**Tags:** apple-tv\
**Created:** [March 17, 2022, 1:58pm UTC](https://forums.plex.tv/t/why-does-this-video-stutter/780993 "2022-03-17T13:58:48Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![brijazz](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/brijazz/32/2105_2.png) [@brijazz](https://forums.plex.tv/u/brijazz)\
**Post date:** [March 17, 2022, 1:58pm UTC](https://forums.plex.tv/t/why-does-this-video-stutter/780993/1 "2022-03-17T13:58:48Z")

</div>

Server Version#: 4.76.1  
Player Version#: 7.29.1 (2058)

I have a 4K file that stutters like crazy - the video essentially drags behind while the audio plays normally, rendering it unwatchable. MediaInfo reports the following about the file:

```auto
Format : Matroska
Format version : Version 4
File size : 5.02 GiB
Duration : 51 min 27 s
Overall bit rate : 14.0 Mb/s
Writing application : mkvmerge v59.0.0 ('Shining Star') 64-bit
Writing library : libebml v1.4.2 + libmatroska v1.6.4

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main 10@L5.1@Main
HDR format : Dolby Vision, Version 1.0, dvhe.08.06, BL+RPU, HDR10 compatible / SMPTE ST 2094 App 4, Version 1, HDR10+ Profile B compatible
Codec ID : V_MPEGH/ISO/HEVC
Duration : 51 min 27 s
Bit rate : 13.4 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0 (Type 2)
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.068
Stream size : 4.83 GiB (96%)
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.2020
Transfer characteristics : PQ
Matrix coefficients : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0001 cd/m2, max: 1000 cd/m2
Maximum Content Light Level : 1165 cd/m2
Maximum Frame-Average Light Level : 180 cd/m2

Audio
ID : 2
Format : E-AC-3
Format/Info : Enhanced AC-3
Commercial name : Dolby Digital Plus
Codec ID : A_EAC3
Duration : 51 min 27 s
Bit rate mode : Constant
Bit rate : 256 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 94.2 MiB (2%)
Language : English
Service kind : Complete Main
Default : Yes
Forced : No

```

A couple of notes:

- Infuse for Apple TV is able to play back the file without issue
- dropping back to the old video player in settings allows the file to play smoothly but at the expense of Dolby Vision

Any advice would be welcome!

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<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\
**Post date:** [June 15, 2022, 1:59pm UTC](https://forums.plex.tv/t/why-does-this-video-stutter/780993/2 "2022-06-15T13:59:18Z")

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