Improve error handling of srt and add support for 2.7k and 4k on board dvr video as input (#43)

* Initial attempt at adding debug srt processing

Currently it can parse debug srt, but is bypassing srt parsing completelly.

* Far from fluent in rust, but got the job done

* Lets try to break things

* Fix lint errors

* More lint fixes

* add missing ,

* Add pedantic ,

* more lint fixes

* trigger branch build

* Update workflows on branch, trigger actions

* Update release.yaml

* Add font sizes for 2.7k and 4k video

* fix 2.7k font

* increase bitrate limit to 160mbps

* revert workflows

* Fix clippy lints

* Update changelog

* One more clippy lint

* Add side by side font support for INAV (2 pages)

Also add 3 pages for completeness.

Considered renaming 4 colors to 4 pages, but didn't think it was needed.

* Add font auto scale

* Add race font size and scaling.

Fix detection to also consider height, to remove ambiguity between font sizes.

* Lint fixes

* Hopefully fix the crash when the font does not contain a character

* make clippy happy

* Code improvements

* Update changelog

* Clippy lints

---------

Co-authored-by: Alexander van Saase <avsaase@gmail.com>
Co-authored-by: Marcelo Bezerra <>

Author: mmosca

CHANGELOG.md

@@ -11,6 +11,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Load last used OSD font file on startup (@dz0ny).
 - Option to render video with a chroma key background instead of the input video so the OSD can be overlayed in a video editor.
 - Support for Betaflight 4.5 four color fonts.
+- Support for INAV two color fonts ([#43](https://github.com/avsaase/walksnail-osd-tool/pull/43), @mmosca).
+- Support for 4K and 2.7K DVR ([#43](https://github.com/avsaase/walksnail-osd-tool/pull/43), @mmosca).
 
 ### Fixed