Moonfire NVR change log

Below are some highlights in each release. For a full description of all changes, see Git history.

Each release is tagged in Git and on the Docker repository scottlamb/moonfire-nvr.

`v0.6.7` (2021-10-20)

trim whitespace when detecting time zone by reading /etc/timezone.
(Retina 0.3.2) better TEARDOWN handling with the default --rtsp-library=retina (see scottlamb/retina#34). This means faster recovery after an error when using UDP or when the camera's firmware is based on an old live555 release.
(Retina 0.3.3) better authentication support with the default --rtsp-library=retina (see scottlamb/retina#25).

fix #146: "init segment fetch error" when browsers have cached data from v0.6.4 and before.
fix #147: confusing nvr init failures when using very old versions of SQLite.
fix #157: broken live view when using multi-view and selecting the first listed camera then selecting another camera for the upper left grid square.
support --rtsp-transport=udp, which may work better with cameras that use old versions of the live555 library, including many Reolink models.
send RTSP TEARDOWN requests on UDP or with old live555 versions; wait out stale sessions before reconnecting to the same camera. This may improve reliability with old live555 versions when using TCP also.
improve compatibility with cameras that send non-compliant SDP, including models from Geovision and Anpviz.
fix #117: honor shutdown requests when out of disk space, instead of retrying forever.
shut down immediately on a second SIGINT or SIGTERM. The normal "graceful" shutdown will still be slow in some cases, eg when waiting for a RTSP UDP session to time out after a TEARDOWN failure. This allows the impatient to get fast results with ctrl-C when running interactively, rather than having to use SIGKILL from another terminal.

UI: improve video aspect ratio handling. Live streams formerly worked around a Firefox pixel aspect ratio bug by forcing all videos to 16:9, which dramatically distorted 9:16 camera views. Playback didn't have the same workaround, so anamorphic videos looked correct on Chrome but slightly stretched on Firefox. Now both live streams and playback are fully correct on all browsers.
UI: better error messages on live view when browser is unsupported, sub stream is unconfigured, or sub stream is not set to record.
upgrade to retina v0.1.0, which uses SET_PARAMETERS rather than GET_PARAMETERS as a RTSP keepalive. GW Security cameras would ignored the latter, causing Moonfire NVR to drop the connection every minute.

Default to a new pure-Rust RTSP library, retina. If you hit problems, you can switch back via --rtsp-library=ffmpeg. Please report a bug if this helps!
Correct the pixel aspect ratio of 9:16 sub streams (eg a standard 16x9 camera rotated 90 degrees) in the same way as 16:9 sub streams.

New user interface! Besides a more modern appearance, it has better error handling and an experimental live view UI.
Compile fix for nightly rust 2021-03-14 and beyond.
Fix incorrect prev_media_duration_90k calculation. No current impact. This field is intended to be used in an upcoming scrub bar UI, and when not calculated properly there might be unexpected gaps or overlaps in playback.

Fix panics when a stream's PTS has extreme jumps (#113)
Improve logging. Console log output is now color-coded. ffmpeg errors and panics are now logged in the same way as other messages.
Fix an error that could prevent the moonfire-nvr check --delete-orphan-rows command from actually deleting rows.

Improve the server's error messages on the console and in logs.
Switch the UI build from the yarn package manager to npm. This makes Moonfire NVR a bit easier to build from scratch.
Extend the moonfire-nvr check command to clean up several problems that can be caused by filesystem corruption.
Set the page size to 16 KiB on moonfire-nvr init and moonfire-nvr upgrade. This improves performance.
Fix mangled favicons (#105)

This is the first tagged version and first Docker image release. I chose the version number 0.6.0 to match the current schema version 6.