Portable ccextractor full changelog

New: Add support for raw CDP (Caption Distribution Packet) files
New: Add --scc-accurate-timing option for bandwidth-aware SCC output
Fix: MXF files containing CEA-708 captions not being detected/extracted
Docs: Add Windows WSL build instructions
Fix: Security fixes (out-of-bounds read/write) in a few places in the legacy C code

New Features:
VOBSUB subtitle extraction with OCR support for MP4 files
VOBSUB subtitle extraction support for MKV/Matroska files
Native SCC input support - CCExtractor can now read SCC (Scenarist Closed Caption) files
Configurable frame rate (--scc-framerate) and styled PAC codes for SCC output
Bug Fixes:
Apply --delay option to DVB/bitmap subtitles (previously only worked with text-based subtitles)
200ms timing offset in MOV/MP4 caption extraction
utf8proc include path for system library builds
Use fixed-width integer types in MP4 bswap functions for better portability
Guard ocr_text access with ENABLE_OCR preprocessor check
Preserve FFmpeg libs when building with -system-libs -hardsubx
Build Improvements:
Add vobsub_decoder to Windows and autoconf build systems
Add winget and Chocolatey packaging workflows for Windows distribution
Documentation:
Add VOBSUB extraction documentation and subtile-ocr Dockerfile

Various bug fixes and improvements

More tapping points for debug image in ccextractor.
Add support for tesseract 4.0
Remove multiple RGB to grey conversion in OCR.
Update UTF8Proc to 2.2.0

New: Upgrade libGPAC to 0.7.1.
New: mp4 tx3g & multitrack subtitles.
New: Guide to update dependencies (docs/Updating_Dependencies.txt).
New: Add LICENSE File (#959).

Changed Window GUI size (larger).
Added Teletext options to GUI.
Added -teletext to force teletext mode even if not detected
Added -noteletext to disable teletext detection. This can be needed for streams that have both 608 data and teletext packets if you need to process the 608 data (if teletext is detected it will take precedence otherwise).
Added -datapid to force a specific elementary stream to be used for data (bypassing detections).
Added -ru2 and -ru3 to limit the number of visible lines in roll-up captions (bypassing whatever the broadcast says).
Added support for a .hex (hexadecimal) dump of data.
Added support for wtv in Windows. This is done by using a new program (wtvccdump.exe) and a new DirectShow filter (CCExtractorDump.dll) that process the .wtv using DirecShow's filters and export the line 21 data to a .hex file. The GUI calls wtvccdump.exe as needed.
Added --nogoptime to force PTS timing even when CCExtractor would use GOP timing otherwise.