SOLVED: Straming issues with large files HEVC HDR10+

SOLVED: Straming issues with large files HEVC HDR10+ - Printable Version

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+--- Thread: SOLVED: Straming issues with large files HEVC HDR10+ (/t-solved-straming-issues-with-large-files-hevc-hdr10)

Straming issues with large files HEVC HDR10+ - yodamin - 2025-08-31

Hi,

I am new so - first post.
Please slap me if I got the wrong category :-)

Whenever I play a large'ish 4k mkv HDR 10 or 10+ file I get stuttering within 1 minute of start.
Up to 1 minute it is smooth as butter.

I have an 8700K, 32GB RAM, 512GB NvME for EndeavourOS and a 12TB mechanical drive for my media (Seagate Iron Wolf 12 TG 7200 RPM)
mounted via fstab with noatime set.

The movie is being transcoded into AV1/AAC 2 ch 25.4Mbps 57fps and I am using my Firefox web browser to test this on my desktop.

I am on an internal 1Gbps LAN and the server and client are separated by a switch and about 5-6 feet.
All connections are wired. For now. When this is all worked out I'll have wireless 6g clients using the server also.

For example the movie below: starts to stutter within 50 seconds of starting the movie and does not stop. When I play it remotely from the same server using vlc it is fine. NO transcoding and no stuttering at all.

Any help at all would be much appreciated.
TYVM everyone.

[Image: ng0E2fO.png]

The Usual Suspects (1995)
Container: mkv
Path: /mnt/Media/movies/The Usual Suspects (1995)/The Usual Suspects (1995).mkv
Size: 19002 MB

Subtitle
Title: English - Default - Forced - PGSSUB
Language: eng
Codec: PGSSUB
AVC: No
Default: Yes
Forced: Yes
External: No

Video
Title: 4K HEVC Dolby Vision Profile 8.1 (HDR10)
Codec: HEVC
AVC: No
Profile: Main 10
Level: 153
Resolution: 3840x1600
Aspect ratio: 2.40:1
Anamorphic: No
Interlaced: No
Framerate: 60
Bitrate: 25131 kbps
Bit depth: 10 bit
Video range: HDR
Video range type: DOVIWithHDR10
DV title: Dolby Vision Profile 8.1 (HDR10)
DV version major: 1
DV version minor: 0
DV profile: 8
DV level: 8
DV rpu preset flag: 1
DV el preset flag: 0
DV bl preset flag: 1
DV bl signal compatibility id: 1
Color space: bt2020nc
Color transfer: smpte2084
Color primaries: bt2020
Pixel format: yuv420p10le
Ref frames: 1

Audio
Title: DD 5.1 - English - Dolby Digital - Default
Language: eng
Codec: AC3
AVC: No
Layout: 5.1
Channels: 6 ch
Bitrate: 640 kbps
Sample rate: 48000 Hz
Default: Yes
Forced: No
External: No

Audio
Title: DTS-HD MA 5.1 - English
Language: eng
Codec: DTS
AVC: No
Profile: DTS-HD MA
Layout: 5.1
Channels: 6 ch
Bitrate: 3790 kbps
Sample rate: 48000 Hz
Bit depth: 24 bit
Default: No
Forced: No
External: No

Audio
Title: DTS 5.1 - English
Language: eng
Codec: DTS
AVC: No
Profile: DTS
Layout: 5.1
Channels: 6 ch
Bitrate: 1536 kbps
Sample rate: 48000 Hz
Default: No
Forced: No
External: No

RE: Straming issues with large files HEVC HDR10+ - bitmap - 2025-08-31

Do you see the 0.95x? That means it's transcoding at 95% speed of playback. So your equipment, at present, is not sufficient to transcode both video and audio as well as tonemap a 4K HDR media file.

RE: Straming issues with large files HEVC HDR10+ - yodamin - 2025-08-31

Hi bitmap,

TYVM for your reply.
I just discovered jelly-fin media player, installed it and now I am doing direct play @40 Mbps of that very same movie and it is not stuttering and looks absolutely gorgeous. I click anywhere on the time line and the transition to that time line is instant.

Perhaps the equipment is fine and the actual issue was the Firefox web browser?
I am unsure.
I did notice that when using the Jelly-Fin Media client it states that the player is mpvplayer and the bitrate set to auto-I changed that to the highest in the list (40Mbps) and it remains just fine.

I believe it was an issue within Firefox and not, as you say, the equipment.

As a matter of fact I have that same video streaming in VLC and Jelly fin on the same desktop at the same time AND I have another movie streaming in the Firefox web browser and all of them are playing back just fine. No stuttering or buffering at al on any of them.

So, I believe the equipment is just fine to stream in 4K HDR10+ or whatever.

Thanks again for your reply though. Any help is always appreciated and welcome.