* fix bug where subtitle streams that don't support external streaming
would show up in video player OSD selection as external when transcoding
(e.g. embedded PGSSUB)
* fix bug where EnableSubtitleExtraction server setting wasn't taken
into consideration when transcoding
-> this happens if the processing of items is slower as the fetching of
new
-> if a big library is synced, the old behavior could lead to extensive
use of memory
-> the semaphore acts like a buffer that only allows fetching of new
items from the library if old ones are processed
-> the current size of the 'buffer' is hard coded to 2 * [max. item
fetch limit] * [number of download threads]
Kodi 18 seems to not log LOGINFO messages, this approach uses LOGNOTICE if its
available and LOGINFO otherwise, ensuring compatibility without needing to
check for kodi versions
KODI recenly deprecated LOGNOTICE (as per
https://github.com/xbmc/xbmc/pull/18346) and announced that LOGINFO should be
used instead.
LOGINFO has been available since kodi matrix's migration to spdlog in april
2020.
* Override VideoBitrate option in transcoding url (previously calced in backend)
* Use manual AudioBitrate when user has track selection dialog disabled
* Fix bad loop-and-remove
* Redo max. bitrate options, add more bitrates in the lower end
* Remove SD/HD from the bitrate strings as the quality doesn't match up to what the backend selects (e.g. 1.3 Mbps definitely wasn't HD)
* Add option to force transcode mpeg2
* Add option to choose between h264 & h265 as a preferred codec for transcoding
* Add option to select preferred audio codec for transcoding/directstream
* Add option to select audio bitrate when transcoding (previously hardcoded to 384kbps for >2.0ch & 192kbps for <=2.0ch)
* Add option to select max audio channels (e.g. for server-side downmix)
* Add option to hide embedded/internal & picture-based subtitles in the track selection dialog
