continuous builds

Built 2026-07-02T13:12+00:00

Current builds from Git master branch. macOS alternative build is rebuilt daily, Linux ARM builds weekly. Archived builds can be found here, additional alternative builds here.

UltraGrid 1.10.6

Built 2026-06-23T14:52+00:00

Changes:

• added reflector wrapper handling both audio+video
• Cineform can be decoded through lavd (if native not compiled)
• vo_pp,cf/text performance improved
• AJA: use new libajantv2 open-source library instead of old ntv2 one
• enable multithreading for some less common lavc encoders (eg. OpenH264)
• vcap/decklink: improve profile handling, support for topological ID
• cmpto_j2k: support for CPU implementation, added R12L CUDA conversion
• vcap/dshow: support for OBS virtual camera
• add audio filter channel_remap for remapping on sender
• improve FEC resilliancy if traffic is low
• vcap/rtsp: support for authentization, stability fixes
• vcap/rtsp (recv), rxtx/rtsp (send): support for HEVC and JPEG
• SDL3 support
• full Wayland support, including GUI, OGL, Vulkan [Linux]
• GUI: support for server/client mode
• support for DeckLink IP features
• audio conference mode supports passive (listen-only) participants
• compilation supported on BSD systems
• support for Samsung's Advanced Professional Video (via FFmpeg)
• updated DELTACAST codebase (support for new cards, formats)

Fixes since last release:

1.10.6

• use latest AJA SDK
• fix audio network packets not being freed under some conditions
• trafic shaper - use CLOCK_MONOTONIC - this prevents freeze in Win when resuming from S3 sleep
• really add files required to run standalone configure without the need for autoconf/automake
• [v4l2] fix use-after-free (hopefully just dev name not print)
• [acap/portaudio] fix some cap devices not shown in help
• [portaudio] improved exitting (fix a crash)

1.10.5

• fix seldom audio corruption
• fix presentation of portaudio devices in help
• add configure (user doesn't need autoconf/automake)

1.10.4

• fix default VP9 on x86-64 pre v3 (wo AVX2). But the libvpx-vp9 seem to be better encoder than libsvt_vp9 in any case.
• fix crash on querying directshow devices (GH-493)
• compilation fixes of various seldom used modules

1.10.3

• screen_avf: fix swapped name/dev in probe (for GUI)
• compliance with Apple Dev Program (explicit recording notice
  if screen capture or Core Audio device is used)
• reenable CFHD decoding fallback with lavd
• fixed some small lavd regression when some decoders unavail

1.10.2

• fix Vulkan display crashing on keypresses in console
• fix GL display show/hide cursor keybind
• fix control port argument in hd-rum-translator (GH-482)
• added 2 conversions for Videotoolbox 10b encode (GH-479, GH-480)
• modified hevc_videotoolbox not to default to 4:2:0 (GH-480)
• bundle libdecor so that the windows (GL/SDL/Vulkan) have decorations in Wayland
• make SPOUT running again (GH-487)
• fix VDPAU being advertised/used with GL even when undesirable
• fix GPUJPEG subsampling detection (probe, by updated GJ upstream)
• ported AV Foundation vcap from master so that it can be used as a screen capture for macOS Intel builds (the old Core Graphics cannot be built anymore) (GH-485)

1.10.1

• fix temporarily broken r12l_to_gbrp16le (GH-476)
• missing arm64 macOS dependency on brotlicommon (GH-478)
• add libOpenGL.0.so library fallback to Linux AppImage
• fix Pipewire screen capture not starting
• build fixes
• reenable AV Foundation (not being enabled on macOS)
• fix decoding ProRes (GH-481)

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.10.6

UltraGrid 1.10.5

Built 2026-05-22T12:08+00:00

Changes:

• added reflector wrapper handling both audio+video
• Cineform can be decoded through lavd (if native not compiled)
• vo_pp,cf/text performance improved
• AJA: use new libajantv2 open-source library instead of old ntv2 one
• enable multithreading for some less common lavc encoders (eg. OpenH264)
• vcap/decklink: improve profile handling, support for topological ID
• cmpto_j2k: support for CPU implementation, added R12L CUDA conversion
• vcap/dshow: support for OBS virtual camera
• add audio filter channel_remap for remapping on sender
• improve FEC resilliancy if traffic is low
• vcap/rtsp: support for authentization, stability fixes
• vcap/rtsp (recv), rxtx/rtsp (send): support for HEVC and JPEG
• SDL3 support
• full Wayland support, including GUI, OGL, Vulkan [Linux]
• GUI: support for server/client mode
• support for DeckLink IP features
• audio conference mode supports passive (listen-only) participants
• compilation supported on BSD systems
• support for Samsung's Advanced Professional Video (via FFmpeg)
• updated DELTACAST codebase (support for new cards, formats)

Fixes since last release:

1.10.5

• fix seldom audio corruption
• fix presentation of portaudio devices in help
• add configure (user doesn't need autoconf/automake)

1.10.4

• fix default VP9 on x86-64 pre v3 (wo AVX2). But the libvpx-vp9 seem to be better encoder than libsvt_vp9 in any case.
• fix crash on querying directshow devices (GH-493)
• compilation fixes of various seldom used modules

1.10.3

• screen_avf: fix swapped name/dev in probe (for GUI)
• compliance with Apple Dev Program (explicit recording notice
  if screen capture or Core Audio device is used)
• reenable CFHD decoding fallback with lavd
• fixed some small lavd regression when some decoders unavail

1.10.2

• fix Vulkan display crashing on keypresses in console
• fix GL display show/hide cursor keybind
• fix control port argument in hd-rum-translator (GH-482)
• added 2 conversions for Videotoolbox 10b encode (GH-479, GH-480)
• modified hevc_videotoolbox not to default to 4:2:0 (GH-480)
• bundle libdecor so that the windows (GL/SDL/Vulkan) have decorations in Wayland
• make SPOUT running again (GH-487)
• fix VDPAU being advertised/used with GL even when undesirable
• fix GPUJPEG subsampling detection (probe, by updated GJ upstream)
• ported AV Foundation vcap from master so that it can be used as a screen capture for macOS Intel builds (the old Core Graphics cannot be built anymore) (GH-485)

1.10.1

• fix temporarily broken r12l_to_gbrp16le (GH-476)
• missing arm64 macOS dependency on brotlicommon (GH-478)
• add libOpenGL.0.so library fallback to Linux AppImage
• fix Pipewire screen capture not starting
• build fixes
• reenable AV Foundation (not being enabled on macOS)
• fix decoding ProRes (GH-481)

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.10.5

UltraGrid 1.10.4

Built 2026-04-23T12:07+00:00

Changes:

• added reflector wrapper handling both audio+video
• Cineform can be decoded through lavd (if native not compiled)
• vo_pp,cf/text performance improved
• AJA: use new libajantv2 open-source library instead of old ntv2 one
• enable multithreading for some less common lavc encoders (eg. OpenH264)
• vcap/decklink: improve profile handling, support for topological ID
• cmpto_j2k: support for CPU implementation, added R12L CUDA conversion
• vcap/dshow: support for OBS virtual camera
• add audio filter channel_remap for remapping on sender
• improve FEC resilliancy if traffic is low
• vcap/rtsp: support for authentization, stability fixes
• vcap/rtsp (recv), rxtx/rtsp (send): support for HEVC and JPEG
• SDL3 support
• full Wayland support, including GUI, OGL, Vulkan [Linux]
• GUI: support for server/client mode
• support for DeckLink IP features
• audio conference mode supports passive (listen-only) participants
• compilation supported on BSD systems
• support for Samsung's Advanced Professional Video (via FFmpeg)
• updated DELTACAST codebase (support for new cards, formats)

Fixes since last release:

1.10.4

• fix default VP9 on x86-64 pre v3 (wo AVX2). But the libvpx-vp9 seem to be better encoder than libsvt_vp9 in any case.
• fix crash on querying directshow devices (GH-493)
• compilation fixes of various seldom used modules

1.10.3

• screen_avf: fix swapped name/dev in probe (for GUI)
• compliance with Apple Dev Program (explicit recording notice
  if screen capture or Core Audio device is used)
• reenable CFHD decoding fallback with lavd
• fixed some small lavd regression when some decoders unavail

1.10.2

• fix Vulkan display crashing on keypresses in console
• fix GL display show/hide cursor keybind
• fix control port argument in hd-rum-translator (GH-482)
• added 2 conversions for Videotoolbox 10b encode (GH-479, GH-480)
• modified hevc_videotoolbox not to default to 4:2:0 (GH-480)
• bundle libdecor so that the windows (GL/SDL/Vulkan) have decorations in Wayland
• make SPOUT running again (GH-487)
• fix VDPAU being advertised/used with GL even when undesirable
• fix GPUJPEG subsampling detection (probe, by updated GJ upstream)
• ported AV Foundation vcap from master so that it can be used as a screen capture for macOS Intel builds (the old Core Graphics cannot be built anymore) (GH-485)

1.10.1

• fix temporarily broken r12l_to_gbrp16le (GH-476)
• missing arm64 macOS dependency on brotlicommon (GH-478)
• add libOpenGL.0.so library fallback to Linux AppImage
• fix Pipewire screen capture not starting
• build fixes
• reenable AV Foundation (not being enabled on macOS)
• fix decoding ProRes (GH-481)

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.10.4

UltraGrid 1.10.3

Built 2026-02-20T14:41+00:00

Changes:

• added reflector wrapper handling both audio+video
• Cineform can be decoded through lavd (if native not compiled)
• vo_pp,cf/text performance improved
• AJA: use new libajantv2 open-source library instead of old ntv2 one
• enable multithreading for some less common lavc encoders (eg. OpenH264)
• vcap/decklink: improve profile handling, support for topological ID
• cmpto_j2k: support for CPU implementation, added R12L CUDA conversion
• vcap/dshow: support for OBS virtual camera
• add audio filter channel_remap for remapping on sender
• improve FEC resilliancy if traffic is low
• vcap/rtsp: support for authentization, stability fixes
• vcap/rtsp (recv), rxtx/rtsp (send): support for HEVC and JPEG
• SDL3 support
• full Wayland support, including GUI, OGL, Vulkan [Linux]
• GUI: support for server/client mode
• support for DeckLink IP features
• audio conference mode supports passive (listen-only) participants
• compilation supported on BSD systems
• support for Samsung's Advanced Professional Video (via FFmpeg)
• updated DELTACAST codebase (support for new cards, formats)

Fixes since last release:

1.10.3

• screen_avf: fix swapped name/dev in probe (for GUI)
• compliance with Apple Dev Program (explicit recording notice
  if screen capture or Core Audio device is used)
• reenable CFHD decoding fallback with lavd
• fixed some small lavd regression when some decoders unavail

1.10.2

• fix Vulkan display crashing on keypresses in console
• fix GL display show/hide cursor keybind
• fix control port argument in hd-rum-translator (GH-482)
• added 2 conversions for Videotoolbox 10b encode (GH-479, GH-480)
• modified hevc_videotoolbox not to default to 4:2:0 (GH-480)
• bundle libdecor so that the windows (GL/SDL/Vulkan) have decorations in Wayland
• make SPOUT running again (GH-487)
• fix VDPAU being advertised/used with GL even when undesirable
• fix GPUJPEG subsampling detection (probe, by updated GJ upstream)
• ported AV Foundation vcap from master so that it can be used as a screen capture for macOS Intel builds (the old Core Graphics cannot be built anymore) (GH-485)

1.10.1

• fix temporarily broken r12l_to_gbrp16le (GH-476)
• missing arm64 macOS dependency on brotlicommon (GH-478)
• add libOpenGL.0.so library fallback to Linux AppImage
• fix Pipewire screen capture not starting
• build fixes
• reenable AV Foundation (not being enabled on macOS)
• fix decoding ProRes (GH-481)

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.10.3

UltraGrid 1.10.2

Built 2026-01-21T09:33+00:00

Changes:

• added reflector wrapper handling both audio+video
• Cineform can be decoded through lavd (if native not compiled)
• vo_pp,cf/text performance improved
• AJA: use new libajantv2 open-source library instead of old ntv2 one
• enable multithreading for some less common lavc encoders (eg. OpenH264)
• vcap/decklink: improve profile handling, support for topological ID
• cmpto_j2k: support for CPU implementation, added R12L CUDA conversion
• vcap/dshow: support for OBS virtual camera
• add audio filter channel_remap for remapping on sender
• improve FEC resilliancy if traffic is low
• vcap/rtsp: support for authentization, stability fixes
• vcap/rtsp (recv), rxtx/rtsp (send): support for HEVC and JPEG
• SDL3 support
• full Wayland support, including GUI, OGL, Vulkan [Linux]
• GUI: support for server/client mode
• support for DeckLink IP features
• audio conference mode supports passive (listen-only) participants
• compilation supported on BSD systems
• support for Samsung's Advanced Professional Video (via FFmpeg)
• updated DELTACAST codebase (support for new cards, formats)

Fixes since last release:

1.10.2

• fix Vulkan display crashing on keypresses in console
• fix GL display show/hide cursor keybind
• fix control port argument in hd-rum-translator (GH-482)
• added 2 conversions for Videotoolbox 10b encode (GH-479, GH-480)
• modified hevc_videotoolbox not to default to 4:2:0 (GH-480)
• bundle libdecor so that the windows (GL/SDL/Vulkan) have decorations in Wayland
• make SPOUT running again (GH-487)
• fix VDPAU being advertised/used with GL even when undesirable
• fix GPUJPEG subsampling detection (probe, by updated GJ upstream)
• ported AV Foundation vcap from master so that it can be used as a screen capture for macOS Intel builds (the old Core Graphics cannot be built anymore) (GH-485)

1.10.1

• fix temporarily broken r12l_to_gbrp16le (GH-476)
• missing arm64 macOS dependency on brotlicommon (GH-478)
• add libOpenGL.0.so library fallback to Linux AppImage
• fix Pipewire screen capture not starting
• build fixes
• reenable AV Foundation (not being enabled on macOS)
• fix decoding ProRes (GH-481)

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.10.2

UltraGrid 1.10.1

Built 2025-12-05T12:01+00:00

Changes:

• added reflector wrapper handling both audio+video
• Cineform can be decoded through lavd (if native not compiled)
• vo_pp,cf/text performance improved
• AJA: use new libajantv2 open-source library instead of old ntv2 one
• enable multithreading for some less common lavc encoders (eg. OpenH264)
• vcap/decklink: improve profile handling, support for topological ID
• cmpto_j2k: support for CPU implementation, added R12L CUDA conversion
• vcap/dshow: support for OBS virtual camera
• add audio filter channel_remap for remapping on sender
• improve FEC resilliancy if traffic is low
• vcap/rtsp: support for authentization, stability fixes
• vcap/rtsp (recv), rxtx/rtsp (send): support for HEVC and JPEG
• SDL3 support
• full Wayland support, including GUI, OGL, Vulkan [Linux]
• GUI: support for server/client mode
• support for DeckLink IP features
• audio conference mode supports passive (listen-only) participants
• compilation supported on BSD systems
• support for Samsung's Advanced Professional Video (via FFmpeg)
• updated DELTACAST codebase (support for new cards, formats)

Fixes since last release:

1.10.1

• fix temporarily broken r12l_to_gbrp16le (GH-476)
• missing arm64 macOS dependency on brotlicommon (GH-478)
• add libOpenGL.0.so library fallback to Linux AppImage
• fix Pipewire screen capture not starting
• build fixes
• reenable AV Foundation (not being enabled on macOS)
• fix decoding ProRes

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.10.1

UltraGrid 1.10

Built 2025-11-14T15:37+00:00

Changes:

• added reflector wrapper handling both audio+video
• Cineform can be decoded through lavd (if native not compiled)
• vo_pp,cf/text performance improved
• AJA: use new libajantv2 open-source library instead of old ntv2 one
• enable multithreading for some less common lavc encoders (eg. OpenH264)
• vcap/decklink: improve profile handling, support for topological ID
• cmpto_j2k: support for CPU implementation, added R12L CUDA conversion
• vcap/dshow: support for OBS virtual camera
• add audio filter channel_remap for remapping on sender
• improve FEC resilliancy if traffic is low
• vcap/rtsp: support for authentization, stability fixes
• vcap/rtsp (recv), rxtx/rtsp (send): support for HEVC and JPEG
• SDL3 support
• full Wayland support, including GUI, OGL, Vulkan [Linux]
• GUI: support for server/client mode
• support for DeckLink IP features
• audio conference mode supports passive (listen-only) participants
• compilation supported on BSD systems
• support for Samsung's Advanced Professional Video (via FFmpeg)
• updated DELTACAST codebase (support for new cards, formats)

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.10

UltraGrid 1.9.12

Built 2025-10-21T08:00+00:00

Changes:

• added basic nvdec support
• added Pipewire screen capture
• added Pipewire generic video capture & display
• added Pipewire audio capture & display
• GUI: Don't block whole interface when querying UG capabilities
• GUI: Better handling of UG crash during capability query
• GUI: vuMeter: Redesigned to allow variable channel count
• GUI: vuMeter: Added maximum recent peak indicator
• swmix: Optionaly specify a custom config file path
• holepunch: New 'bind_ip' option
• improved deinterlacing quality and performance; support for higher than 8 bit pixel formats
• added new deinterlace filters (linear, bob)
• added support for Vuikan on macOS (utilizing MoltenVK)
• improved support for HW accelerated encoding with QuickSync for Intel GPUs (mainly for higher bit-depth formats)
• improved support for AMD GPUs (encoding with AMF, VDPAU decoding, VA-API)
• improved Windows screen capture (automaticaly register filter)
• Reed-Solomon: support for multiple tiles (notably 3D)
• improved AV1 performance by tweaking parameters
• video switcher: support for embedded audio switching
• added file (libavformat-backed) output
• supported >8 bit transcoding in hd-rum-transcode and resize filter
• improved DShow capture compatibility with new pixfmts + convert to RGB
• added official mac arm64 build

Fixes since last release:

1.9.12

• AppImage comatibility improvement (fix missing gnutls, maybe also gdk[_pixbuf])
• vcap/file: fixes (raw file rewinding + others)
• vulkan_sdl2: fix (allow) integrated/discrete card selection
• vcap/decklink: fix color-space change detection (regression)
• CI build fixes

1.9.11

• improve NVENC intra-refresh behavior (ported from master)
• suppress --cuda-devices help returned error
• fix multi-tile compress support

1.9.10

• fix macOS >= 15.4 init crashes (LC_RPATH dups)
• build fixes (XIMEA, PCP)
• fix manual port assignment with send+recv over lo in single process
• few other less important fixes

1.9.9

• build fixes: switch to U22, PCP
• fix SDL2 I420
• improve Firejail AppImage compatibility with various params
• fix WASAPI device selection with UUID
• CoInitialize: use COINIT_APARTMENTTHREADE (compat with PA/ASIO build)
• select libvpx-vp9 for VP9 if AVX2 not present (avoid crasn with SVT impl)
• portaudio: improved sample rate handling
• Vulkan fixes

1.9.8

• build fixes (SVT-VP9, Vulkan)
• re-enable DELTACAST

1.9.7

• fixed vdisp/file crash
• fixes for irregular (eg. odd) image widths
• added warnings for potentially wrong configs (alsa, R-S audio)
• fixed some color conversion
• NDI fixes - reconnect, 16-bit YCbCr blank if produced in MSW

1.9.6

• fixed not working GPUJPEG decoder
• vcap/rtsp small fixes; but mainly advised to use the development build
  because of plenty of changes/fixes that are not to be backported

1.9.5

• CI: updated dependencies (x265, NDI6 et al.)
• libsvtav1 - hint to use crf instead of bitrate (more comprehensive enhancement in the development version)
• rtsp client freeze fix
• fixed capture from OBS virtual cam in Windows
• fixes some (rare) crashes

1.9.4

• new GPUJPEG compat
• build fixes
• miscellaneous fixes, but no high severity

1.9.3

• fixed crashes in edge cases
• support for current DELTACAST driver/SDK
• deinterlace: fixed running without options

1.9.2

• CI: build CUDA stuff for CC 3.5 (compat with Kepler/Maxwell devices)
• build fixes
• DShow: support for H.264 capture
• AV Foundation: fixed running without options
• DeckLink disp.: fixed crash with BMD Studio 4K Studio and '-r analog'
• fixed transparency in GUI on Wayland

1.9.1

• CI build fixes
• fixed libavcodec conversion
• fixed testcard:size=4k (option parse)

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.9.12

UltraGrid 1.9.11

Built 2025-08-20T11:11+00:00

Changes:

• added basic nvdec support
• added Pipewire screen capture
• added Pipewire generic video capture & display
• added Pipewire audio capture & display
• GUI: Don't block whole interface when querying UG capabilities
• GUI: Better handling of UG crash during capability query
• GUI: vuMeter: Redesigned to allow variable channel count
• GUI: vuMeter: Added maximum recent peak indicator
• swmix: Optionaly specify a custom config file path
• holepunch: New 'bind_ip' option
• improved deinterlacing quality and performance; support for higher than 8 bit pixel formats
• added new deinterlace filters (linear, bob)
• added support for Vuikan on macOS (utilizing MoltenVK)
• improved support for HW accelerated encoding with QuickSync for Intel GPUs (mainly for higher bit-depth formats)
• improved support for AMD GPUs (encoding with AMF, VDPAU decoding, VA-API)
• improved Windows screen capture (automaticaly register filter)
• Reed-Solomon: support for multiple tiles (notably 3D)
• improved AV1 performance by tweaking parameters
• video switcher: support for embedded audio switching
• added file (libavformat-backed) output
• supported >8 bit transcoding in hd-rum-transcode and resize filter
• improved DShow capture compatibility with new pixfmts + convert to RGB
• added official mac arm64 build

Fixes since last release:

1.9.11

• improve NVENC intra-refresh behavior (ported from master)
• suppress --cuda-devices help returned error
• fix multi-tile compress support

1.9.10

• fix macOS >= 15.4 init crashes (LC_RPATH dups)
• build fixes (XIMEA, PCP)
• fix manual port assignment with send+recv over lo in single process
• few other less important fixes

1.9.9

• build fixes: switch to U22, PCP
• fix SDL2 I420
• improve Firejail AppImage compatibility with various params
• fix WASAPI device selection with UUID
• CoInitialize: use COINIT_APARTMENTTHREADE (compat with PA/ASIO build)
• select libvpx-vp9 for VP9 if AVX2 not present (avoid crasn with SVT impl)
• portaudio: improved sample rate handling
• Vulkan fixes

1.9.8

• build fixes (SVT-VP9, Vulkan)
• re-enable DELTACAST

1.9.7

• fixed vdisp/file crash
• fixes for irregular (eg. odd) image widths
• added warnings for potentially wrong configs (alsa, R-S audio)
• fixed some color conversion
• NDI fixes - reconnect, 16-bit YCbCr blank if produced in MSW

1.9.6

• fixed not working GPUJPEG decoder
• vcap/rtsp small fixes; but mainly advised to use the development build
  because of plenty of changes/fixes that are not to be backported

1.9.5

• CI: updated dependencies (x265, NDI6 et al.)
• libsvtav1 - hint to use crf instead of bitrate (more comprehensive enhancement in the development version)
• rtsp client freeze fix
• fixed capture from OBS virtual cam in Windows
• fixes some (rare) crashes

1.9.4

• new GPUJPEG compat
• build fixes
• miscellaneous fixes, but no high severity

1.9.3

• fixed crashes in edge cases
• support for current DELTACAST driver/SDK
• deinterlace: fixed running without options

1.9.2

• CI: build CUDA stuff for CC 3.5 (compat with Kepler/Maxwell devices)
• build fixes
• DShow: support for H.264 capture
• AV Foundation: fixed running without options
• DeckLink disp.: fixed crash with BMD Studio 4K Studio and '-r analog'
• fixed transparency in GUI on Wayland

1.9.1

• CI build fixes
• fixed libavcodec conversion
• fixed testcard:size=4k (option parse)

Full changelog: https://github.com/CESNET/UltraGrid/commits/v1.9.11