# HEVC Encoding Forum Preview

**URL:** https://forums.plex.tv/t/hevc-encoding-forum-preview/888127
**Category:** Plex Media Server
**Created:** [September 13, 2024, 8:16pm UTC](https://forums.plex.tv/t/hevc-encoding-forum-preview/888127 "2024-09-13T20:16:05Z")
**Posts on this page:** 1
**Showing post:** 686

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### Author: ![Ari](https://avatars.discourse-cdn.com/v4/letter/a/5f8ce5/32.png) [@Ari](https://forums.plex.tv/u/Ari)
#### Post date: [December 20, 2024, 9:11pm UTC](https://forums.plex.tv/t/hevc-encoding-forum-preview/888127/686 "2024-12-20T21:11:03Z")

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Not strictly related to HEVC encoding but since you’re already touching Transcoder code anyway you should know that someone recently broke PGS/VOBSUB burn-in. It now falls back to software encoding (for HDR) and tries to `inlineass` instead of `overlay` which obviously doesn’t work. This means it’s currently **not** possible to watch media (which needs to be transcoded) with external image-based subtitles:

| | SDR | HDR |
| --- | --- | --- |
| **SRT (internal)** | HW | HW |
| **SRT (external)** | HW | HW |
| **VOBSUB (internal)** | HW | SW |
| **VOBSUB (external)** | FAIL | FAIL |
| **PGS (internal)** | HW | SW |
| **PGS (external)** | FAIL | FAIL |

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