@@ -2,11 +2,11 @@ GStreamer 1.26 Release Notes
22
33GStreamer 1.26.0 was originally released on 11 March 2025.
44
5- The latest bug-fix release in the stable 1.26 series is 1.26.1 and was released on 24 April 2025.
5+ The latest bug-fix release in the stable 1.26 series is 1.26.2 and was released on 29 May 2025.
66
77See https://gstreamer.freedesktop.org/releases/1.26/ for the latest version of this document.
88
9- Last updated: Thursday 24 April 2025, 16 :00 UTC (log)
9+ Last updated: Thursday 29 May 2025, 20 :00 UTC (log)
1010
1111## Introduction
1212
@@ -1568,6 +1568,247 @@ List of merge requests and issues fixed in 1.26.1
15681568- List of Merge Requests applied in 1.26.1
15691569- List of Issues fixed in 1.26.1
15701570
1571+ 1.26.2
1572+
1573+ The second 1.26 bug-fix release (1.26.2) was released on 29 May 2025.
1574+
1575+ This release only contains bugfixes as well as a number of security fixes and important playback fixes, and it should be safe to
1576+ update from 1.26.0.
1577+
1578+ Highlighted bugfixes in 1.26.2
1579+
1580+ - Various security fixes and playback fixes
1581+ - aggregator base class fixes to not produce buffers too early in live mode
1582+ - AWS translate element improvements
1583+ - D3D12 video decoder workarounds for crashes on NVIDIA cards on resolution changes
1584+ - dav1d AV1-decoder performance improvements
1585+ - fmp4mux: tfdt and composition time offset fixes, plus AC-3 / EAC-3 audio support
1586+ - GStreamer editing services fixes for sources with non-1:1 aspect ratios
1587+ - MIDI parser improvements for tempo changes
1588+ - MP4 demuxer atom parsing improvements and security fixes
1589+ - New skia-based video compositor element
1590+ - Subtitle parser security fixes
1591+ - Subtitle rendering and seeking fixes
1592+ - Playbin3 and uridecodebin3 stability fixes
1593+ - GstPlay stream selection improvements
1594+ - WAV playback regression fix
1595+ - GTK4 paintable sink colorimetry support and other improvements
1596+ - WebRTC: allow webrtcsrc to wait for a webrtcsink producer to initiate the connection
1597+ - WebRTC: new Janus Video Room WebRTC source element
1598+ - vah264enc profile decision making logic fixes
1599+ - Python bindings gained support for handling mini object writability (buffers, caps, etc.)
1600+ - Various bug fixes, build fixes, memory leak fixes, and other stability and reliability improvements
1601+
1602+ gstreamer
1603+
1604+ - aggregator: Various state related fixes
1605+ - element: ref-sink the correct pad template when replacing an existing one
1606+ - pipeline: Store the actual latency even if no static latency was configured
1607+ - structure: Add gst_structure_is_writable() API to allow python bindings to be able to handle writability of MiniObjects
1608+ - tracerutils: Do not warn on empty string as tracername
1609+ - tracerutils: Fix leak in gst_tracer_utils_create_tracer()
1610+ - Ensure properties are freed before (re)setting with g_value_dup_object() or g_value_dup_boxed() and during cleanup
1611+ - Fix new warnings on Fedora 42, various meson warnings, and other small meson build/wrap fixes
1612+
1613+ gst-plugins-base
1614+
1615+ - alsa: Avoid infinite loop in DSD rate detection
1616+ - gl: Implement basetransform meta transform function
1617+ - glshader: free shader on stop
1618+ - glupload: Only add texture-target field to GL caps
1619+ - gstaudioutilsprivate: Fix gcc 15 compiler error with function pointer
1620+ - mikey: Avoid infinite loop while parsing MIKEY payload with unhandled payload types
1621+ - properties: add G_PARAM_STATIC_STRINGS where missing
1622+ - riff-media: fix MS and DVI ADPCM av_bps calculations
1623+ - subtitleoverlay: Remove 0.10 hardware caps handling
1624+ - subtitleoverlay: Missing support for DMABuf(?)
1625+ - tests: opus: Update channel support and add to meson
1626+ - textoverlay: fix shading for RGBx / RGBA pixel format variants
1627+ - textoverlay background is wrong while cropping
1628+ - uridecodebin3: Don’t hold play items lock while releasing pads
1629+ - uridecodebin3: deadlock on PLAY_ITEMS_LOCK
1630+ - Fix new warnings on Fedora 42, various meson warnings, and other small meson build/wrap fixes
1631+ - Fix Qt detection in various places
1632+
1633+ gst-plugins-good
1634+
1635+ - adaptivedemux2: Fixes for collection handling
1636+ - adaptivedemux2: Fix several races
1637+ - dash: mpdclient: Don’t pass terminating NUL to adapter
1638+ - gl: Implement basetransform meta transform function
1639+ - imagefreeze: Set seqnum from segment too
1640+ - interleave: Don’t hold object lock while querying caps downstream
1641+ - matroskamux: Write stream headers before finishing file, so that a correct file with headers is written if we finish without
1642+ any data
1643+ - meson: Add build_rpath for qt6 plugin on macOS
1644+ - meson: Fix qt detection in various places
1645+ - properties: add G_PARAM_STATIC_STRINGS where missing
1646+ - qtdemux: Check length of JPEG2000 colr box before parsing it
1647+ - qtdemux: Parse chan box and improve raw audio channel layout handling
1648+ - qtdemux: Improve track parsing
1649+ - qtdemux: Use byte reader to parse mvhd box
1650+ - qtdemux: cmpd box is only mandatory for uncompressed video with uncC version 0
1651+ - rtph264pay: Reject stream-format=avc without codec_data
1652+ - rtputils: Add debug category
1653+ - v4l2: pool: Send drop frame signal after dqbuf success
1654+ - v4l2: pool: fix assert when mapping video frame with DMA_DRM caps
1655+ - v4l2videoenc: report error only when buffer pool parameters are invalid
1656+ - wavparse: Ignore EOS when parsing the headers
1657+ - wavparse: Regression leading to unplaybable wav files that were working before
1658+ - Ensure properties are freed before (re)setting with g_value_dup_object() or g_value_dup_boxed() and during cleanup
1659+ - Fix new warnings on Fedora 42, various meson warnings, and other small meson build/wrap fixes
1660+ - Fixes for big endian
1661+ - Switch to GST_AUDIO_NE()
1662+ - Valgrind fixes
1663+
1664+ gst-plugins-bad
1665+
1666+ - alphacombine: Fix seeking after EOS
1667+ - cuda: Fix runtime PTX compile, fix example code build with old CUDA SDK
1668+ - curl: Fix build with MSVC
1669+ - curl: small fixups p3
1670+ - d3d12: Fix gstreamer-full subproject build with gcc
1671+ - d3d12: Generate gir file
1672+ - d3d12decoder: Workaround for NVIDIA crash on resolution change
1673+ - d3d12memory: Allow set_fence() only against writable memory
1674+ - d3d12memory: Make D3D12 map flags inspectable
1675+ - d3d12screencapturesrc: Fix desktop handle leak
1676+ - dash: mpdclient: Don’t pass terminating NUL to adapter
1677+ - dvbsuboverlay: Actually make use of subtitle running time instead of using PTS
1678+ - dvbsuboverlay: No subtitles after seek
1679+ - h264parse: Never output stream-format=avc/avc3 caps without codec_data
1680+ - lcevc: Use portable printf formatting macros
1681+ - midiparse: Consider tempo changes when calculating duration
1682+ - nvencoder: Fix GstVideoCodecFrame leak on non-flow-ok return
1683+ - play: Improve stream selection
1684+ - properties: add G_PARAM_STATIC_STRINGS where missing
1685+ - rtpsender: fix ‘priority’ GValue get/set
1686+ - va: Fix H264 profile decision logic
1687+ - vulkan/wayland: Init debug category before usage
1688+ - Ensure properties are freed before (re)setting with g_value_dup_object() or g_value_dup_boxed() and during cleanup
1689+ - Fix new warnings on Fedora 42, various meson warnings, and other small meson build/wrap fixes
1690+ - Fixes for big endian
1691+ - Fix Qt detection in various places
1692+ - Switch to GST_AUDIO_NE()
1693+ - Valgrind fixes
1694+
1695+ gst-plugins-ugly
1696+
1697+ - No changes
1698+
1699+ GStreamer Rust plugins
1700+
1701+ - awstranslate: improve control over accumulator behavior
1702+ - awstranslate: output buffer lists
1703+ - cea608tott: make test text less shocking by having more cues as context
1704+ - dav1ddec: Directly decode into downstream allocated buffers if possible
1705+ - deny: Allow webpki-root-certs license
1706+ - fmp4mux: Add support for AC-3 / EAC-3
1707+ - fmp4mux: Use earliest PTS for the base media decode time (tfdt)
1708+ - fmp4mux: Fix handling of negative DTS in composition time offset
1709+ - fmp4mux: Write lmsg as compatible brand into the last fragment
1710+ - mp4mux: add extra brands
1711+ - mp4: avoid dumping test output into build directory
1712+ - mp4: migrate to mp4-atom to check muxing
1713+ - mp4: test the trak structure
1714+ - gtk4: Update and adapt to texture builder API changes
1715+ - gtk4: Initial colorimetry support
1716+ - gtk4: Update default GTK4 target version to 4.10
1717+ - rtp: Update to bitstream-io 4.0
1718+ - skia: Implement a video compositor using skia
1719+ - webrtc: addressing a few deadlocks
1720+ - webrtc: Support for producer sessions targeted at a given consumer
1721+ - webrtc: add new JanusVR source element
1722+ - webrtc: janus: clean up and refactoring
1723+ - webrtcsink: Use seq number instead of Uuid for discovery
1724+ - webrtc: Make older peers less likely to crash when webrtcsrc is used
1725+ - Fix or silence various new clippy warnings
1726+ - Update Cargo.lock to fix duplicated target-lexicon
1727+
1728+ gst-libav
1729+
1730+ - Valgrind fixes
1731+ - libav: Only allocate extradata while decoding
1732+
1733+ gst-rtsp-server
1734+
1735+ - properties: add G_PARAM_STATIC_STRINGS where missing
1736+ - properties: ensure properties are freed before (re)setting with g_value_dup_object() or g_value_dup_boxed() and during
1737+ cleanup
1738+ - tests: Valgrind fixes
1739+
1740+ gstreamer-vaapi
1741+
1742+ - Ensure properties are freed before (re)setting with g_value_dup_object() or g_value_dup_boxed() and during cleanup
1743+
1744+ gstreamer-sharp
1745+
1746+ - No changes
1747+
1748+ gst-python
1749+
1750+ This release includes important fixes for the GStreamer Python bindings.
1751+
1752+ Since pygobject 3.13 around 10 years ago, it wasn’t possible anymore to modify GStreamer miniobjects, e.g. modify caps or set
1753+ buffer timestamps, as an implicit copy of the original would always be made. This should finally work again now.
1754+
1755+ - Fix new warnings on Fedora 42, various meson warnings, and other small meson build/wrap fixes
1756+ - python: Add overrides to be able to handle writability of MiniObjects
1757+ - python: Convert buffer metadata API to use @property decorators
1758+ - REGRESSION: pygobject 3.13 now copies the GstStructure when getting them from a GstCaps, making it impossible to properly
1759+ modify structures from caps in place
1760+
1761+ gst-editing-services
1762+
1763+ - Fix frame position for sources with par < 1
1764+ - Fix video position for sources with pixel-aspect-ratio > 1
1765+ - Valgrind fixes
1766+ - properties: add G_PARAM_STATIC_STRINGS where missing
1767+ - Switch to GST_AUDIO_NE() to make things work properly on Big Endian systems
1768+
1769+ gst-devtools, gst-validate + gst-integration-testsuites
1770+
1771+ - Fix new warnings on Fedora 42, various meson warnings, and other small meson build/wrap fixes
1772+ - validate: baseclasses: Reset Test timeouts between iterations
1773+ - validate: scenario: Fix race condition when ignoring EOS
1774+
1775+ gst-examples
1776+
1777+ - Fix new warnings on Fedora 42, various meson warnings, and other small meson build/wrap fixes
1778+ - webrtc examples: Fix running against self-signed certs
1779+ - webrtc/signalling: fix compatibility with python 3.13
1780+
1781+ gstreamer-docs
1782+
1783+ - No changes
1784+
1785+ Development build environment
1786+
1787+ - Various wrap updates
1788+ - Add qt-method meson options to fix Qt detection in various places
1789+ - pre-commit: Workaround broken shebang on Windows
1790+
1791+ Cerbero build tool and packaging changes in 1.26.2
1792+
1793+ - directx-headers: Fix g-ir-scanner expecting MSVC naming convention for gst-plugins-bad introspection
1794+ - m4: update recipe to fix hang in configure
1795+ - pango: Fix introspection missing since 1.56.2 update
1796+
1797+ Contributors to 1.26.2
1798+
1799+ Adrian Perez de Castro, Alexander Slobodeniuk, Alicia Boya García, Andoni Morales Alastruey, Biswapriyo Nath, Brad Hards, Branko
1800+ Subasic, Christoph Reiter, Daniel Morin, Doug Nazar, Devon Sookhoo, Eva Pace, Guillaume Desmottes, Hou Qi, Jakub Adam, Jan
1801+ Schmidt, Jochen Henneberg, Jordan Petridis, L. E. Segovia, Mathieu Duponchelle, Matthew Waters, Nicolas Dufresne, Nirbheek
1802+ Chauhan, Olivier Crête, Pablo García, Piotr Brzeziński, Robert Mader, Sebastian Dröge, Seungha Yang, Thibault Saunier,
1803+ Tim-Philipp Müller, Vasiliy Doylov, Wim Taymans, Xavier Claessens, Zhao, Gang,
1804+
1805+ … and many others who have contributed bug reports, translations, sent suggestions or helped testing. Thank you all!
1806+
1807+ List of merge requests and issues fixed in 1.26.2
1808+
1809+ - List of Merge Requests applied in 1.26.2
1810+ - List of Issues fixed in 1.26.2
1811+
15711812Schedule for 1.28
15721813
15731814Our next major feature release will be 1.28, and 1.27 will be the unstable development version leading up to the stable 1.28
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