recDL

recDL is a simple, AV capture application for Blackmagic DeckLink devices.

• Requirement: macOS 15.x, 14.x, 13.x, 12.x, 11.x, 10.15, 10.14.
• Capture Device: Blackmagic DeckLink devices/UltraStudio devices.
• Restriction: Compressed/Synchronized captures are not supported.
• Dependency: Blackmagic_Desktop_Video_Macintosh (11.4-11.7, 12.0-12.9, 14.0-14.2).
• Framework: DLABridging + DLABCaptureManager (Embedded)
• Architecture: Universal binary (x86_64 + arm64)

Basic feature

• One click recording
• One click preview for Video/Audio
• Wide 16:9 or Legacy 4:3 screen video
• Multichannel audio (2/8/16 or none)
• Direct transcoding to H264+AAC.mov
• Direct transcoding to ProRes422+AAC.mov

Scripting feature

• Basic AppleScript support
• Automated file name creation based on date/time
• Recording limiter support
• AutoQuit support after recording is finished

Advanced feature

• YUV422 pixel format processing
• Non square pixel video support
• Strict pixel aspect ratio (e.g. 40:33 for NTSC-DV source)
• Clean aperture (e.g.720x480 <-> 704x480 for NTSC-DV source)
• ColorPrimaries/TransferFunctions/YCbCrMatrices ready
• LPCM Audio format recording support
• Multichannel audio (2 for Stereo, 8 or 16 for discrete)
• HDMI surround audio (up to 8 channels)
• SMPTE timecode ready (* Depends on video source - VANC)

Development environment

• macOS 15.0 Sequoia
• Xcode 16.0
• Swift 6.0

License

• The MIT License

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