# Problem with HW transcoding when HDR tone mapping is on **URL:** \ **Category:** Plex Media Server\ **Tags:** server-windows\ **Created:** [November 4, 2024, 10:59pm UTC](https://forums.plex.tv/t/problem-with-hw-transcoding-when-hdr-tone-mapping-is-on/894508 "2024-11-04T22:59:49Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![radoslav\_milanov\_gmail\_com](https://avatars.discourse-cdn.com/v4/letter/r/ea5d25/32.png) [@radoslav\_milanov\_gmail\_com](https://forums.plex.tv/u/radoslav_milanov_gmail_com)\ **Post date:** [November 4, 2024, 10:59pm UTC](https://forums.plex.tv/t/problem-with-hw-transcoding-when-hdr-tone-mapping-is-on/894508/1 "2024-11-04T22:59:49Z")
Server Version#: 1.41.2.9134 (x64) Player Version#: Any - desktop browser, Nvidia Shield, LG smart TV GPU: RTX 4060Ti, driver v 565.90 Transcoding works as expected when HDR tone mapping is disabled. Enabling tone mapping causes transcoder to use CPU instead of GPU. ---
**Author:** ![radoslav\_milanov\_gmail\_com](https://avatars.discourse-cdn.com/v4/letter/r/ea5d25/32.png) [@radoslav\_milanov\_gmail\_com](https://forums.plex.tv/u/radoslav_milanov_gmail_com)\ **Post date:** [November 5, 2024, 7:20pm UTC](https://forums.plex.tv/t/problem-with-hw-transcoding-when-hdr-tone-mapping-is-on/894508/2 "2024-11-05T19:20:29Z")
And just noticed - this only happens when transcoding AV1 content. With HEVC everything works fine. When transcoding AV1 HDR to SDR status page also says (hw) for the transcoding but CPU usage jumps and resulting stream freezes a lot at playback. ---
**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\ **Post date:** [February 3, 2025, 7:20pm UTC](https://forums.plex.tv/t/problem-with-hw-transcoding-when-hdr-tone-mapping-is-on/894508/3 "2025-02-03T19:20:30Z")
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