mediabunny Releases

This release updates metadata handling for Vorbis-style formats by exposing repeated keys as arrays and fixes bugs in the FLAC muxer and AVC software decoder. It addresses date priority issues in FLAC files and corrects a critical decoding error where B-frames were being dropped.

Sep 9, 2026

This release introduces support for negative timestamps and enhances copy conversions, allowing users to trim media without transcoding. It includes improvements to various container formats like ISOBMFF and MPEG-TS, along with several bug fixes.

Sep 8, 2026

This release addresses a bug where sample iterators fail to terminate internally when an exception is thrown, ensuring proper cleanup behavior.

Sep 4, 2026

This release addresses a stability issue by relaxing an erroneous assertion within the `esds` box parsing logic, preventing potential crashes during media processing.

Sep 3, 2026

This patch release focuses on stability and reliability, fixing critical issues regarding numeric field handling, audio sample copying across browsers, and memory management.

Aug 31, 2026

This release focuses on color space handling and video parsing logic, specifically for AV1, VP9, and AVC formats, while improving container muxing capabilities.

Aug 29, 2026

A maintenance release addressing edge cases in encryption handling, HLS segment parsing, AAC configuration, and Promise implementation compatibility.

Aug 26, 2026

Adds support for legacy video formats and improves error reporting in insecure browser contexts.

Aug 21, 2026

A minor administrative release to fix a deployment issue related to missing provenance.

Aug 17, 2026

A major feature release introducing DTS audio codec support across multiple container formats.

Aug 17, 2026

Adds a utility method for retrieving detailed video frame rate information.

Aug 14, 2026

Fixes a compatibility issue with WebKit-based browsers regarding file writing operations.

Aug 12, 2026

Significant update improving HLS writing, especially for sparse tracks and single-file modes, alongside general performance and validation improvements.

Aug 8, 2026

Fixes specific bugs related to WebKit behavior and async flow control in the ISOBMFF muxer.

Aug 3, 2026

This is a minor maintenance release focused on safer word embedding loading and internal code quality improvements.

Aug 1, 2026

Jul 31, 2026

A minor formatting fix for metadata in ISOBMFF containers.

Jul 30, 2026

A major update introducing quantizer support for constant-quality encoding and a revamped Quality API, while deprecating legacy bitrate fields. Includes significant improvements to encoder and decoder stability.

Jul 30, 2026

Introduces advanced control over conversion workflows by allowing conversions to be composed and enabling pausing or stepping through execution.

Jul 22, 2026

This release enables end-to-end operation for AI agents without requiring the dashboard, introduces a built-in teleprompter and clip transitions, and enhances privacy masks and audio controls.

Jul 20, 2026