update video docs with the latest learnings (#7596)

### What

* Fixes #7393

Point out that HDR is not supported, link more issues.

### Checklist
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* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
* Using examples from latest `main` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/7596?manifest_url=https://app.rerun.io/version/main/examples_manifest.json)
* Using full set of examples from `nightly` build:
[rerun.io/viewer](https://rerun.io/viewer/pr/7596?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
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checklist](https://github.com/rerun-io/rerun/blob/main/tests/python/release_checklist)!
* [x] If have noted any breaking changes to the log API in
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docs/content/reference/video.md

@@ -58,7 +58,7 @@ With that in mind, here are the browsers which we have tested and verified to ge
 
 [^1]: Firefox on Linux has been observed to [stutter when playing back H.264 video](https://github.com/rerun-io/rerun/issues/7532).
 [^2]: Any Chromium-based browser should work, but we don't test all of them.
-[^3]: Chrome on Windows has also been observed to stutter on playback. It can be mitigated by [using software decoding](https://rerun.io/docs/getting-started/troubleshooting#video-stuttering).
+[^3]: Chrome on Windows has been observed to stutter on playback. It can be mitigated by [using software decoding](https://rerun.io/docs/getting-started/troubleshooting#video-stuttering), but this may lead to high memory usage. See also https://github.com/rerun-io/rerun/issues/7595.
 
 When it comes to codecs, we aim to support any codec which the browser supports, but
 we currently cannot guarantee that all of them will work. For more information about
@@ -77,5 +77,7 @@ At the moment, we test the following codecs:
 [^6]: Safari/WebKit has been observed suttering when playing `hvc1` but working fine with `hevc1`. Despite support being advertised Safari 16.5 has been observed not support H.265 decoding.
 [^7]: Only supported if hardware encoding is available. Therefore always affected by Windows stuttering issues, see [^3].
 
+(TODO(#7594))[https://github.com/rerun-io/rerun/issues/7594]: HDR video is generally not supported at this point.
+
 ## Links
 * [Web video codec guide, by Mozilla](https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Video_codecs)