validate hardware accel, use hw accel for error messages (#1471)

* only display supported hw accels in ffmpeg profile editor

* qsv capability improvements

* qsv fixes

* update changelog

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Include `inputstream.ffmpegdirect` properties in channels.m3u when requested by Kodi
 - Log playout item title and path when starting a stream
   - This will help with media server libraries where the URL passed to ffmpeg doesn't indicate which file is streaming
+- Add QSV Capabilities to Troubleshooting page
 
 ### Fixed
 - Fix playout bug that caused some schedule items with fixed start times to be pushed to the next day
@@ -25,6 +26,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - Note that ffmpeg is still *always* required for playback to work
 - Fix PGS subtitle pixel format with Intel VAAPI
 - Fix some cases where `Copy` button would fail to copy to clipboard
+- Fix some cases where ffmpeg process would remain running after properly closing ErsatzTV
+- Fix QSV HLS segment duration
+  - This behavior caused extremely slow QSV stream starts
 
 ### Changed
 - Upgrade ffmpeg to 6.1, which is now *required* for all installs
@@ -36,6 +40,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Jellyfin collection scanning will no longer happen after every (automatic or forced) library scan
     - Automatic/periodic scans will check collections one time after all libraries have been scanned
     - There is a new table in the `Media` > `Libraries` page with a button to manually re-scan Jellyfin collections as needed
+- In FFmpeg Profile editor, only display hardware acceleration kinds that are supported by the configured ffmpeg
+- Test QSV acceleration if configured, and fallback to software mode if test fails
+- Detect QSV capabilities on Linux (supported decoders, encoders)
 
 ## [0.8.2-beta] - 2023-09-14
 ### Added