BDRebuilderThread

- Added experimental support for UHD-BD.
- Added FFMPEG to the package to facilitate 10 bit frame serving for UHD encoding.
- Added a new hidden option UHD_LIMIT_ENCODE which limits encodes to 10mins for each M2TS. Meant for testing a backup before starting actual
extended UHD-BD encoding.
- Added video file support when selecting a background image for menus.
Now you can choose an MKV, MP4, or M2TS to provide a full motion video
for the background.
- Corrected an error in which subtitles that have been imported in SRT
format and then output to SRT, where there were multiple subtitles, were
not included correctly in ALTERNATE output.
- Added a new hidden option SPECIAL_3D_MUX. If set to 1 the TSMUXER
parameters for "insertSEI" and "contSPS" are excluded from the video
command line in the meta file. Some have reported that this fixes
pixelation that has been experienced.
- Added an adjustment for audio overhead when muxing mono or stereo AC3
encodes (there is a more significant overhead in the M2TS muxtiplexing
by TSMUXER for some reason). This prevents occasional oversizing on
these types of sources.
- Added a check to correct a TSMUXER error in which is misinterprets stereo AAC audio as mono.
- Fixed errors related to creating extremely large batch queues.
- Fixed an error in ALTERNATE processing in which keeping intact audio
from an imported AAC source would cause "ERROR in attempt to mux
(MKVMERGE)".
- Corrected a problem in which IVTC while using DirectshowSource() could cutoff the video before the end of the stream.
- Updated the ALTERNATE selection dialog so that bitrates can be changed for individual presets.
- Increased the maximum number of files that can be imported simultaneously.
- Added a 1 second delay after preparing a file during import. This is
an attempt to correct what might be a "race" issue that has been
reported but I couldn't repeat.
- Updated the included version of MEDIAINFO to version 17.12 in order to support reporting of HDR parameters.
- Updated the included version of X265-64.EXE to v2.8.68 10 bit version.
- Other minor corrections and cosmetic fixes.

- Added code to correctly handle 50/60fps sources when outputting to DVD.
- Updated the included version of X265-64.EXE to v2.8.69 10 bit version.
- Corrected an build error in v0.60.01 that could cause BD-RB to fail. Noticable when selecting multiple streams into the batch list -- may also possibly happen under other circumstances.
- Other minor corrections and cosmetic fixes.

- Updated ALTERNATE encoding so that HDR information is kept when encoding UHD with HEVC settings.
- Fixed an error in which particularly odd variable framerate sources might result in incorrect framerates during import.
- Fixed an error in which conversion from VFR to CFR of 720x480/576 sources during import results in incorrect aspect ratio.
- Added HEVC/No resize ALTERNATE presets to the default list for UHD output.
- Corrected the x: function in filtering so it correctly finds and
executes external filters when ALTERNATE titles are added to a batch
filter via "Add multiple playlists to queue".
- Fixed an error introduced in v0.60.02 that forced AVISYNTH mode rather than FFMPEG for frame serving when testing UHD backups.
- Other minor corrections and cosmetic fixes.

- Corrected issues with file import of MPEG2 sources that contain 2:3 pulldown flags.
- Added IMPORT_NO_PULLDOWN as a new hidden option. When set it will remove pulldown flags from MPEG-2 sources during import of files or DVDs.
- Added two new hidden options. UHD_MAXRATE sets the maximum bitrate for UHD encodes and UHD_VBV_BUFFER sets the buffer size. See HIDDENOPTS.TXT for more information.
- Other minor corrections and cosmetic fixes.

- Added muxing routines that remux HEVC UHD M2TS files, recover lost frames, and corrects TSMUXER timing issues. Please remember that UHD capability is still under development and may need further work.
- Corrected an error in which imported input files that have SRT files muxed in a format other than sequential might set languages incorrectly or even fail during output to ALTERNATE formats.
- Corrected an error in which attempts to extract HEVC secondary streams could cause BD-RB to fail.
- Added a check during start-up that will prevent a "Runtime Error 52" issue when some network or other paths previously specified are not reachable.
- Made changes that correct audio sync issues when outputting to UHD-BD.
- Created a workaround for issues in which the combination of X265 and TSMUXER can cause stutter issues at higher bitrates.
- Added hidden option FIXED_BITRATE which is similar to FIXED_CRF. If set, the source will be reecoded at that bitrate and any output sizing control is removed.
- Corrected an issue that could result in audio sync problems after reencode of certain imported sources.
- Corrected an issue in which imported SRT files that start at offset 0 could, under certain conditions, clear the first spoken subtitle.
- Fixed an issue in which the ALTERNATE_BLURAY hidden setting was allowing long keyint sequences (outside bluray compatibility). This can be overridden by turning it off or setting a fixed vKeyint value in the ALTERNATE.TXT preset being used.
- Added code to perform MPA to AC3 conversion during DVD import. MPA is not supported in BD format and was previously ignored.
- Added OGG Vorbis as a legal audio format for imported video files (converted to AC3).
- Updated the included version of X264-64.EXE to the latest release (r2969).
- Updated the included version of X265-64.EXE to v3.1+1 10 bit version.
- Other minor corrections and cosmetic fixes.
NOTES:
1. DOLBYVISION is not yet supported.
2. All UHD code is still experimental.

- Corrected an issue in which attempting to reencode an imported UHD pseudo-BD that was encoded in a format other than HEVC causes a "UHD_Correct_M2TS() 00009 8102" error during BD-RB'S UHD correction.
- Other minor corrections and cosmetic fixes.

- Corrected "UHD_Correct_M2TS() 00009 8102" error that could be experienced on some high framecount BDs.
- Fixed " - Can't open file:" error that can occur when attempting backup of sources with Dolby Vision.
- Added code to help support Dolby Vision, it is very experimental and needs much more testing.
- Other minor corrections and cosmetic fixes.

- Added code to work around the TSMUXER error: "Can't parse play list file" which appears to be associated with certain UHD MPLS files.
- Fixed an error in UHD audio extraction in which a "Failed to retrieve audio..." by TSMUXER message might appear.
- Added steps to audio/video extraction routines to try several demuxing methods before declaring failure. Prompted by TSMUXER issues associated with UHD.
- Fixed an issue that could prevent BD-RB from keeping originals when size permits while IVTC_1080P is set -- even when the source was not 29.97fps.
- Added a check in automatic audio track selection that prevents a mono or stereo stream from taking priorty over a multi- channel source just because it is a higher priority encoding technology.
- Made numerous changes in order to support Dolby Vision sources. It needs onsiderable testing and feedback, but has progressed significantly.
- Other minor corrections and cosmetic fixes.

- Fixed an error that would prevent muxing of Dolby Vision sources that are multipart and in which the video is being left intact. This might also affect non-Dolby Vision sources that have secondary video streams.
- Fixed an issue that would cause oversizing when reencoding Dolby Vision sources. The sizing algorithm was not accounting for the fixed size of the Dolby Vision track.
- Other minor corrections and cosmetic fixes.

- Corrected an error introduced in v0.60.21 that could cause failure during video extraction on Dolby Vision or other sources that might have secondary video tracks.
- Updated the included version of X264 to the latest stable release (r2984).
- Updated the included versions of X265 to v3.1.2 10 bit version.
- Other minor corrections and cosmetic fixes.