install go2rtc on bob

installs_on_host/go2rtc/pkg/mp4/README.md

@@ -0,0 +1,36 @@
+## Fragmented MP4
+
+```
+ffmpeg -i "rtsp://..." -movflags +frag_keyframe+separate_moof+default_base_moof+empty_moov -frag_duration 1 -c copy -t 5 sample.mp4
+```
+
+- movflags frag_keyframe 
+  Start a new fragment at each video keyframe.
+- frag_duration duration
+  Create fragments that are duration microseconds long.
+- movflags separate_moof
+  Write a separate moof (movie fragment) atom for each track.
+- movflags default_base_moof
+  Similarly to the omit_tfhd_offset, this flag avoids writing the absolute base_data_offset field in tfhd atoms, but does so by using the new default-base-is-moof flag instead.
+
+https://ffmpeg.org/ffmpeg-formats.html#Options-13
+
+## HEVC
+
+| Browser     | avc1 | hvc1 | hev1 |
+|-------------|------|------|------|
+ | Mac Chrome  | +    | -    | +    |
+ | Mac Safari  | +    | +    | -    |
+ | iOS 15?     | +    | +    | -    |
+ | Mac Firefox | +    | -    | -    |
+ | iOS 12      | +    | -    | -    |
+ | Android 13  | +    | -    | -    |
+
+## Useful links
+
+- https://stackoverflow.com/questions/63468587/what-hevc-codec-tag-to-use-with-fmp4-hvc1-or-hev1
+- https://stackoverflow.com/questions/32152090/encode-h265-to-hvc1-codec
+- https://jellyfin.org/docs/general/clients/codec-support.html
+- https://github.com/StaZhu/enable-chromium-hevc-hardware-decoding
+- https://developer.mozilla.org/ru/docs/Web/Media/Formats/codecs_parameter
+- https://gstreamer-devel.narkive.com/rhkUolp2/rtp-dts-pts-result-in-varying-mp4-frame-durations