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canvas-record

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Record a video in the browser or directly on the File System from a canvas region (2D/WebGL/WebGPU) as MP4, WebM, MKV, MOV, GIF, PNG/JPG Sequence using WebCodecs and wasm when available.

github.com/dmnsgn/canvas-record

dmnsgn/canvas-record

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# Changelog All notable changes to this project will be documented in this file. See [commit-and-tag-version](https://github.com/absolute-version/commit-and-tag-version) for commit guidelines. ## [5.4.1](https://github.com/dmnsgn/canvas-record/compare/v5.4.0...v5.4.1) (2025-08-01) # [5.4.0](https://github.com/dmnsgn/canvas-record/compare/v5.3.0...v5.4.0) (2025-08-01) ### Features * add support for mov extension in WebCodecsEncoder ([9de1c8c](https://github.com/dmnsgn/canvas-record/commit/9de1c8c2bcbe8b499ad9e1e651fac00cf31a0c33)) # [5.3.0](https://github.com/dmnsgn/canvas-record/compare/v5.2.1...v5.3.0) (2025-05-11) ### Features * add rect option for capturing a sub-region of the canvas ([84760b5](https://github.com/dmnsgn/canvas-record/commit/84760b53887dd9f99c2e70ece4155123289e6862)), closes [#26](https://github.com/dmnsgn/canvas-record/issues/26) ## [5.2.1](https://github.com/dmnsgn/canvas-record/compare/v5.2.0...v5.2.1) (2025-05-04) ### Bug Fixes * handle rounding values to kilobit in estimateBitRate for small resolutions ([21e7316](https://github.com/dmnsgn/canvas-record/commit/21e7316482b89640c74374cad3ad60ca10c894b0)), closes [#27](https://github.com/dmnsgn/canvas-record/issues/27) # [5.2.0](https://github.com/dmnsgn/canvas-record/compare/v5.1.1...v5.2.0) (2025-04-10) ### Bug Fixes * add duration option to VideoFrame ([779d550](https://github.com/dmnsgn/canvas-record/commit/779d550b051534325b26185b071af7d2223ec00b)), closes [#25](https://github.com/dmnsgn/canvas-record/issues/25) ### Features * add frameOptions ([c95130f](https://github.com/dmnsgn/canvas-record/commit/c95130f1ff27ceb31a3b93abd5b613060001f4ba)) ## [5.1.1](https://github.com/dmnsgn/canvas-record/compare/v5.1.0...v5.1.1) (2025-02-23) # [5.1.0](https://github.com/dmnsgn/canvas-record/compare/v5.0.1...v5.1.0) (2024-07-07) ## [5.0.1](https://github.com/dmnsgn/canvas-record/compare/v5.0.0...v5.0.1) (2024-06-10) ### Bug Fixes * actually allow encoding to be passed by encoderOptions.codec ([16b338e](https://github.com/dmnsgn/canvas-record/commit/16b338e254974e0e7e25c6c34694caf86ccd00af)) # [5.0.0](https://github.com/dmnsgn/canvas-record/compare/v5.0.0-beta.0...v5.0.0) (2024-01-08) # [5.0.0-beta.0](https://github.com/dmnsgn/canvas-record/compare/v4.2.0...v5.0.0-beta.0) (2023-11-04) ### Bug Fixes * correct RecorderOptions extension type ([084a155](https://github.com/dmnsgn/canvas-record/commit/084a155f515fcff5a27b0cde73fdef40a173b96d)), closes [#12](https://github.com/dmnsgn/canvas-record/issues/12) * framerate spelling is not following camelcase in VideoEncoder config ([f9c2662](https://github.com/dmnsgn/canvas-record/commit/f9c2662aced88880e40bff8c8ea0b690938b3235)) ### Build System * update dependencies ([66defa1](https://github.com/dmnsgn/canvas-record/commit/66defa1d1ba1acb8428f10ab4d43f556bf538b23)) ### Features * educated guess for bitrate from resolution and framerate ([acb38c5](https://github.com/dmnsgn/canvas-record/commit/acb38c56994a76263c3a66e714763ea96ef3a050)), closes [#13](https://github.com/dmnsgn/canvas-record/issues/13) ### BREAKING CHANGES * ffmpeg has different binaries and likely to break # [4.2.0](https://github.com/dmnsgn/canvas-record/compare/v4.1.0...v4.2.0) (2023-05-20) ### Bug Fixes * add missing default options ([fc7c13f](https://github.com/dmnsgn/canvas-record/commit/fc7c13f9840d64691b337e4b32d36d21b10b9842)) # [4.1.0](https://github.com/dmnsgn/canvas-record/compare/v4.0.0...v4.1.0) (2023-04-30) # [4.0.0](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-beta.0...v4.0.0) (2023-04-28) # [4.0.0-beta.0](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-alpha.7...v4.0.0-beta.0) (2023-04-20) ### Features * add initOnly option to startOptions ([69e0ab1](https://github.com/dmnsgn/canvas-record/commit/69e0ab1212bbf095532b7694a5fbc788a0c9f0a6)) * default avc codec to level 5.2 to allow record of at least 4096x2048@60fps ([8f956ed](https://github.com/dmnsgn/canvas-record/commit/8f956edecda9852bea54b7c28033f88a9927283b)) # [4.0.0-alpha.7](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-alpha.6...v4.0.0-alpha.7) (2023-04-19) ### Bug Fixes * accept hvc codec identifier for hevc ([d88431d](https://github.com/dmnsgn/canvas-record/commit/d88431d7cd6ab75ac62780b19e76bac85769b338)) # [4.0.0-alpha.6](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-alpha.5...v4.0.0-alpha.6) (2023-04-16) ### Bug Fixes * make isWebCodecsSupported return a boolean ([e8420b9](https://github.com/dmnsgn/canvas-record/commit/e8420b98da74d77449040d06af3380a78716339c)) ### Features * add mp4-muxer and move mp4-wasm to its own encoder ([0693ad0](https://github.com/dmnsgn/canvas-record/commit/0693ad0750303f51da23efe950bf68faa98b7d47)) * add support for codecs in WebCodecs encoder ([3b80a80](https://github.com/dmnsgn/canvas-record/commit/3b80a8088914fd3f0020a2f1212a9099d9c896f8)) # [4.0.0-alpha.5](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-alpha.4...v4.0.0-alpha.5) (2023-03-02) ### Features * make frame/webcodecs encoder inherit recorder filename + keep directory reference ([d820f29](https://github.com/dmnsgn/canvas-record/commit/d820f29d6f791384828a4a9b5e717ab1968a9746)) # [4.0.0-alpha.4](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-alpha.3...v4.0.0-alpha.4) (2023-02-24) ### Features * move filename overwrite to start options ([7f09aa5](https://github.com/dmnsgn/canvas-record/commit/7f09aa5385145802d54649777a17aa8073c23895)) # [4.0.0-alpha.3](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-alpha.2...v4.0.0-alpha.3) (2023-02-15) ### Features * add target options to allow File System API where possible ([a98e233](https://github.com/dmnsgn/canvas-record/commit/a98e2336ae51c58db26cb2d4a19a613e03d08816)) # [4.0.0-alpha.2](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-alpha.1...v4.0.0-alpha.2) (2023-02-14) ### Features * add support for mkv in WebCodecsEncoder ([5ea3352](https://github.com/dmnsgn/canvas-record/commit/5ea3352f74246ca07ecd2e39ad49de65cb6148e3)) # [4.0.0-alpha.1](https://github.com/dmnsgn/canvas-record/compare/v4.0.0-alpha.0...v4.0.0-alpha.1) (2023-01-20) # [4.0.0-alpha.0](https://github.com/dmnsgn/canvas-record/compare/v3.1.0...v4.0.0-alpha.0) (2023-01-20) ### Features * abstract into Recorder and add WebCodecs, H264MP4, GIF, Frame, MediaCapture and FFmpeg encoders ([8c8335d](https://github.com/dmnsgn/canvas-record/commit/8c8335d5cdeb6654be667e8eab3faf8e61e4f0ec)) ### BREAKING CHANGES * add encoders and refactor # [3.1.0](https://github.com/dmnsgn/canvas-record/compare/v3.0.0...v3.1.0) (2021-10-02) ### Features * add exports field to package.json ([f97205d](https://github.com/dmnsgn/canvas-record/commit/f97205d4338cad12ec3bdfb6e4a62525378bc037)) * add sideEffects false ([2304078](https://github.com/dmnsgn/canvas-record/commit/230407860c67cf8f0b70a4d19ac2b2ff914fe27d)) # [3.0.0](https://github.com/dmnsgn/canvas-record/compare/v2.1.0...v3.0.0) (2021-04-16) ### Code Refactoring * use ES modules ([c2b7252](https://github.com/dmnsgn/canvas-record/commit/c2b7252e52bf6a04fcf7c9c3f8502dded74d34e1)) ### BREAKING CHANGES * switch to type module