# Plex Hardware Transcoding HDR NVENC

**URL:** <https://forums.plex.tv/t/plex-hardware-transcoding-hdr-nvenc/689111>\
**Category:** Plex Media Server\
**Tags:** server-windows\
**Created:** [February 11, 2021, 1:20am UTC](https://forums.plex.tv/t/plex-hardware-transcoding-hdr-nvenc/689111 "2021-02-11T01:20:56Z")\
**Posts on this page:** 1\
**Showing post:** 10

<div class="post-metadata">

**Author:** ![KCX](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/kcx/32/88137_2.png) [@KCX](https://forums.plex.tv/u/KCX)\
**Post date:** [February 12, 2021, 7:35am UTC](https://forums.plex.tv/t/plex-hardware-transcoding-hdr-nvenc/689111/10 "2021-02-12T07:35:00Z")

</div>

> [@nameback](#):
>
> Can Quick-Sync even handle more than one stream?

As I said, in Windows not even a single 4K HDR to SDR stream works with the i3 10100 although the hardware is underutilized. Here you can see the missing tone mapping support in Windows.

> [@PMS HDR -\> SDR Tone Mapping with Intel quicksync](https://forums.plex.tv/t/pms-hdr-sdr-tone-mapping-with-intel-quicksync/665839/7):
>
> The devs are aware of the bug and working on a fix. There is a problem with the transcoder driver for newer CPUs.

![1612590065815](https://global.discourse-cdn.com/plex/original/3X/e/b/eb2c9a55de524604796cb07fd05ecb325b3a264c.png)  
 ![1612589937793](https://global.discourse-cdn.com/plex/original/3X/e/e/ee7471aebb826e17a797477f5fada47dec07a1c0.png)  
 ![1612589914335](https://global.discourse-cdn.com/plex/original/3X/6/4/640817bb45be577b4f2ddf7405d88afc00f85e49.png)

The stream stops after approx 30 seconds and has to buffer. That goes on all the time.

If PGS subtitles “burn in” are added, the load even drops and it stutters and buffers even more:  
 ![1612590248681-1](https://global.discourse-cdn.com/plex/original/3X/c/a/ca67197af70b442f8e20e50826ea738a8332475e.png)  
 ![1612590297567-1](https://global.discourse-cdn.com/plex/original/3X/0/c/0ca1219c580834f3b61522b003349e85d3ff1f49.png)

All very strange. In my opinion this can only be explained by problems in the transcoder or driver.

So currently the tone mapping feature in Windows cannot be used for me and I deactivated it.

---

_[View the full topic](https://forums.plex.tv/t/plex-hardware-transcoding-hdr-nvenc/689111)._