Important

We recommend running CasparCG 2.5 on CPUs which support AVX2. It is required for some of our in-progress HDR support. Intel CPUs based on Haswell or later support this, which were first released to consumers in 2013, or 2014 for servers.

Starting with CasparCG 2.6, this will become a requirement. As of 2.5.1 this is only a requirement for certain functionality relating to HDR.

Make sure to install the latest MSVC runtime, the compiler update requires a newer version than 2.4 https://aka.ms/vc14/vc_redist.x64.exe

Core

Improvements

• Initial support for HDR. This is limited to a subset of producers and consumers at this stage.
• Build for Windows with VS2022
• Rework linux builds to produce ubuntu deb files
• Update ffmpeg to 7.0
• Reimplement mixer transforms, to handle routes correctly
• Support more pixel formats from ffmpeg, to preserve colour accuracy better
• Support running on headless linux
• Transitions: Additional behaviours

Fixes

• Build with boost 1.85/1.86/1.87/1.88
• Build with ffmpeg 7.1
• Only produce mixed frames on channels which have consumers
• Routed channels not compositing correctly when channel used a MIXER KEY
• Handle audio for fractional framerates properly
• Gracefully exit on SIGINT and SIGTERM

Producers

Improvements

• FFmpeg: Support loading with a scaling-mode, to configure how clips get fit into the channel
• FFmpeg: Support more pixel formats without cpu conversion
• FFmpeg: Enable alpha for webm videos
• Image: Support loading with a scaling-mode, to configure how images get fit into the channel
• Image: Replace freeimage with ffmpeg
• HTML: Update CEF to 142
• HTML: Support audio

Fixes

• Route: Use full field rate when performing i->p channel route
• HTML: Gracefully handle page load errors
• HTML: Always set cache path

Consumers

Improvements

• Screen: Set size and position from AMCP
• Screen: Improve performance
• Image: Propagate AMCP parameters from PRINT command
• FFmpeg: Remove unnecessary forced conversion to YUVA422
• Decklink: Support explicit yuv output (requires AVX2)
• Decklink: Allow selecting device by hardware persistent id

Fixes

• FFmpeg: Correctly handle PTS on frame drop

Full Changelog: https://github.com/CasparCG/server/compare/v2.4.3-stable...v2.5.0-stable

Core

Fixes

• Improve error handling for invalid config files #1571
• Flush logs before exit #1571
• Check audio cadence values look sane before accepting format #1588
• Cross-channel routes from progressive to interlaced showing lots of black #1576
• Transition: ignoring some transforms of input frames #1602

Producers

Fixes

• FFmpeg: fix crash on invalid frame header
• Decklink: Crash with ffmpeg 7 #1582
• HTML: Fix crash during uninit on exit
• Image: update state during init #1601

Consumers

Fixes

• FFmpeg: set frame_rate for rtmp streams #1462

Full Changelog: https://github.com/CasparCG/server/compare/v2.4.2-stable...v2.4.3-stable

Consumers

Fixes

• Decklink: fix support for driver 14.3 and later

Full Changelog: https://github.com/CasparCG/server/compare/v2.4.1-stable...v2.4.2-stable

Core

Fixes

• Fix bad config file examples
• Fix casparcg_auto_restart.bat not starting scanner
• Revert removal of tbbmalloc, due to notable performance loss on windows
• Supress some cmake build warnings
• Build failure when doxygen installed on system
• Build failures with ffmpeg 7.0
• Revert RPATH linking changes

Producers

Fixes

• FFmpeg: Ignore ndi:// urls
• FFmpeg: Using both in and seek could result in incorrect duration
• Route: Race condition during destruction
• Image: Update freeimage on windows with some CVE fixes and failures with certain pngs
• Image: Respect EXIF rotate flag
• NDI: list local sources

Consumers

Fixes

• Decklink: subregion copy not respecting frame height
• Decklink: subregion vertical offset
• Decklink: subregion height limited with some formats

Full Changelog: https://github.com/CasparCG/server/compare/v2.4.0-stable...v2.4.1-stable