Support HEVC/H.265 video with hev1 flavor (in addition to hvc1) (#7569)

### What

* Details over on rerun-io/re_mp4#9

In short: we supported some kinds of hevc and not others.

<img width="295" alt="image"
src="https://github.com/user-attachments/assets/570115c5-bbd0-4624-bf55-eaf9a9679e52">
<img width="295" alt="image"
src="https://github.com/user-attachments/assets/a85bc5d7-7b4d-43e6-a1d3-972c6bbed3b0">

Test videos:

https://rerun.io/viewer/pr/7569?url=https://static.rerun.io/rrd/0.19.0/hvc1_5b55f7b0f38dc9ce3fca58b8e0ec9f1e084aa8a9.rrd

https://rerun.io/viewer/pr/7569?url=https://static.rerun.io/rrd/0.19.0/hev1_1132ff3c2853de110ae7f323af10bbc1a556ac17.rrd


TODO gather testing data from...
* [x] Windows Chrome
* [x] Windows Firefox
* [x] Linux Chrome
* [x] Linux Firefox
* [x]  More linux Chrome samples - the note there is tentative so far.

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [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/7569?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/7569?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG
* [x] If applicable, add a new check to the [release
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
`CHANGELOG.md` and the migration guide

- [PR Build Summary](https://build.rerun.io/pr/7569)
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)

To run all checks from `main`, comment on the PR with `@rerun-bot
full-check`.

Author: Wumpf

Cargo.lock

@@ -5272,7 +5272,7 @@ dependencies = [
 [[package]]
 name = "re_mp4"
 version = "0.1.0"
-source = "git+https://github.com/rerun-io/re_mp4?rev=3236c76f9228cf6ab0b2bfb1b8f9ffcde975ea05#3236c76f9228cf6ab0b2bfb1b8f9ffcde975ea05"
+source = "git+https://github.com/rerun-io/re_mp4?rev=4705e85f62ddb47c32d9c091d8f0662068211bc8#4705e85f62ddb47c32d9c091d8f0662068211bc8"
 dependencies = [
  "byteorder",
  "bytes",

Cargo.toml

@@ -550,7 +550,7 @@ missing_errors_doc = "allow"
 
 # commit on `rerun-io/mp4` `master` branch: https://github.com/rerun-io/re_mp4/tree/master
 # https://github.com/rerun-io/mp4/commit/3236c76f9228cf6ab0b2bfb1b8f9ffcde975ea05
-re_mp4 = { git = "https://github.com/rerun-io/re_mp4", rev = "3236c76f9228cf6ab0b2bfb1b8f9ffcde975ea05" }
+re_mp4 = { git = "https://github.com/rerun-io/re_mp4", rev = "4705e85f62ddb47c32d9c091d8f0662068211bc8" }
 
 # commit on `rerun-io/re_arrow2` `main` branch
 # https://github.com/rerun-io/re_arrow2/commit/e4717d6debc6d4474ec10db8f629f823f57bad07

crates/store/re_video/src/mp4.rs

@@ -3,7 +3,7 @@
 use super::{Config, Sample, Segment, Time, Timescale, VideoData, VideoLoadError};
 
 pub fn load_mp4(bytes: &[u8]) -> Result<VideoData, VideoLoadError> {
-    let mp4 = re_mp4::read(bytes)?;
+    let mp4 = re_mp4::Mp4::read_bytes(bytes)?;
 
     let mp4_tracks = mp4.tracks().iter().map(|(k, t)| (*k, t.kind)).collect();
 
@@ -86,7 +86,10 @@ pub fn load_mp4(bytes: &[u8]) -> Result<VideoData, VideoLoadError> {
 
 fn unknown_codec_fourcc(mp4: &re_mp4::Mp4, track: &re_mp4::Track) -> re_mp4::FourCC {
     let stsd = &track.trak(mp4).mdia.minf.stbl.stsd;
-    stsd.unknown.first().copied().unwrap_or_default()
+    match &stsd.contents {
+        re_mp4::StsdBoxContent::Unknown(four_cc) => *four_cc,
+        _ => Default::default(),
+    }
 }
 
 /// Returns whether a buffer is MP4 video data.

docs/content/reference/video.md

@@ -40,13 +40,15 @@ Video playback is done using the browser's own video decoder, so the supported c
 
 Overall, we recommend using Chrome or another Chromium-based browser, as it seems to have the best video support as of writing.
 
-When choosing a codec, we recommend [AV1](https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Video_codecs#av1), as that seems to have the best overall playback support. Since AV1 is patent-free, it is also likely the first codec we will support in the native viewer.
+When choosing a codec, we recommend [AV1](https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Video_codecs#av1),
+as it seems to have the best overall playback support while also having very high compression quality.
+Since AV1 is patent-free, it is also likely the first codec we will support in the native viewer.
 
 For decoding video in the Web Viewer, we use the [WebCodecs API](https://developer.mozilla.org/en-US/docs/Web/API/WebCodecs_API).
 This API enables us to take advantage of the browser's hardware accelerated video decoding capabilities.
 It is implemented by all modern browsers, but with varying levels of support for different codecs, and varying levels of quality.
 
-With that in mind, here are the browsers which we have tested and verified to work:
+With that in mind, here are the browsers which we have tested and verified to generally work:
 
 |            | Linux  | macOS | Windows |
 | ---------- | ------ | ----- | ------- |
@@ -64,12 +66,16 @@ which codecs are supported by which browser, see [Video codecs on MDN](https://d
 
 At the moment, we test the following codecs:
 
-|       | Linux | macOS   | Windows |
-| ----- | ----- | ------- | ------- |
-| AV1   | ✅    | 🚧[^4]  | ✅      |
-| H.264 | ✅    | ✅      | ✅      |
+|            | Linux Firefox | Linux Chrome | macOS Firefox | macOS Chrome | macOS Safari | Windows Firefox | Windows Chrome |
+| ---------- | ------------- | ------------ | ------------- | ------------ | ------------ | --------------- | -------------- |
+| AV1        | ✅            | ✅           | ✅           | ✅           | 🚧[^4]        | ✅               | ✅             |
+| H.264/avc  | ✅            | ✅           | ✅           | ✅           | ✅            | ✅               | ✅             |
+| H.265/hevc | ❌            | ❌           | ❌           | ✅           | 🚧[^6]        | ❌               | 🚧[^7]         |
 
 [^4]: Safari/WebKit does not support AV1 decoding except on [Apple Silicon devices with hardware support](https://webkit.org/blog/14445/webkit-features-in-safari-17-0/).
+[^5]: Firefox does not support H.265 decoding on any platform.
+[^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].
 
 ## Links
 * [Web video codec guide, by Mozilla](https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Video_codecs)