v1.21.0

• Added a new alpha video option to the Conversion API for retaining transparency when converting videos
• Improved Conversion API error messages to be more helpful when missing encoder support
• Added a new isValid field to Conversion to check if execute() is even able to run
• Added a new showWarnings field to ConversionOptions to silence console warnings
• Fixed an incorrect default crop region being used in drawWithFit for rotated video samples (#151)

v1.20.1

• Fixed udta box being read as string when the field was non-string, fixing out of bounds read (#150)

v1.20.0

This update's core new feature is transparent video!

• Added support for reading and writing transparency data within WebM/Matroska, which uses the new sideData.alpha field in EncodedPacket.
• Implemented decoding of packets with alpha data, automatically resulting in a VideoSample with a pixel format that support alpha (such as RGBA, BGRA or I420A).
• Implemented encoding of frames with alpha data, resulting in an EncodedPacket with sideData.alpha populated. Enable this by setting alpha: 'keep' in VideoEncodingOptions.
• Improved error bubbling when encoding media
• VideoSample and AudioSample now implement the Disposable interface
• Fixed crash when reading the header of RF64 WAVE files (#146)

v1.19.1

• Made stripped Node.js import more resilient for certain bundler environments

v1.19.0

• ID3 metadata can now be read from & written to WAVE files (#110)
• Added .dispose() to Input, allowing you to immediately stop all ongoing read operations (like HTTP requests) and close all decoders
• Added fetchFn to UrlSourceOptions, allowing you to polyfill full fetch functionality into environments that otherwise don't have it (such as React Native)
• BlobSource now also works in environments that don't support Blob.stream() (such as React Native)
• getRetryDelay is now passed the error of the last fetch call, allowing you to condition retry logic on errors
• Request instances can now be used to construct UrlSource
• AVC and HEVC encoders now explicitly throw when being initialized with odd dimensions

v1.18.1

• Fixed build errors in Angular projects

v1.18.0

• Matroska AttachedFiles can now be read/written via MetadataTags.raw
• Improved header merging for custom UrlSource requestInit
• Fixed MP3 frame size calculation issue (#140)

v1.17.3

• Fixed flaky FLAC metadata reading

v1.17.2

• Fixed faultily written Xing frame in MP3 muxer

v1.17.1

• Fixed faulty bitrate and frame size calculation when reading some MP3 files (#134)