--- title: "Changelog" description: "Release notes for HyperFrames." rss: true --- Recent HyperFrames releases, including user-facing features, fixes, and migration notes. {/* New release entries are prepended by `bun run changelog:draft --write`. */} Finite compositions can now use GSAP `repeat: -1` loops when an explicit root `data-duration` bounds the export, while unbounded infinite timelines remain blocking. Preview also serves external symlink assets correctly, and this release adds media-treatment capabilities plus performance and stability improvements for data-driven caption templates. ## Features - **Core:** Define media treatment capabilities ([70213c5a8](https://github.com/heygen-com/hyperframes/commit/70213c5a8526b12c8b26f01b8288d78bb9edc917)) ## Fixes - **Lint:** Allow bounded GSAP infinite repeats ([adb149b86](https://github.com/heygen-com/hyperframes/commit/adb149b86939e61bb3fce91cb8d0e5530f7bd29c), [#2763](https://github.com/heygen-com/hyperframes/pull/2763)) - **Preview:** Serve external symlink assets ([7778c093b](https://github.com/heygen-com/hyperframes/commit/7778c093b6288756cf5e27311828e6049e7c85c3), [#2764](https://github.com/heygen-com/hyperframes/pull/2764)) - **Caption Weight Shift:** Remove O(n^2) redundant hide-all-others loop ([5af6203ae](https://github.com/heygen-com/hyperframes/commit/5af6203ae7fcd506511ca5683a9097d666c4a63e)) - **Caption Editorial Emphasis / Emoji Pop:** Remove O(n²) redundant hide-all-others loop ([18de2b1f1](https://github.com/heygen-com/hyperframes/commit/18de2b1f1de8062a79ae7aa6fa4796e320fe6131)) ## Catalog - **Registry:** Liberal emoji-pop brand colors, weight-shift fit fixes, 8192 clamp ([8bf939043](https://github.com/heygen-com/hyperframes/commit/8bf939043fb44e05f6dd7caba81822ac5ef18334)) - **Registry:** Reject non-numeric caption-data versions; boot fetch never clobbers a manual attach ([5c2981d06](https://github.com/heygen-com/hyperframes/commit/5c2981d066480000d623e4d023e9cf918b2772e3)) - **Registry:** Encapsulate caption template runtimes in IIFEs ([e2846eb7c](https://github.com/heygen-com/hyperframes/commit/e2846eb7cc81821f7fc21a9c4dccdd85c7ef3429)) - **Registry:** Clear brand CSS custom properties on unbranded re-attach; remove dead italic path ([4f6994719](https://github.com/heygen-com/hyperframes/commit/4f6994719196e72dc01ebe8f60d869e064ec7685)) - **Registry:** Make caption-editorial-emphasis data-driven with emphasis heuristic ([ed8973952](https://github.com/heygen-com/hyperframes/commit/ed8973952dda2aa43931e0ffa05b3fc6ba0cb1cb)) - **Registry:** Make caption-highlight data-driven with automatic grouping ([7d4e71d10](https://github.com/heygen-com/hyperframes/commit/7d4e71d10b617b858fde2e764e15d530e9ffdf19)) - **Registry:** Make caption-emoji-pop data-driven with generic emoji lexicon ([392a9d251](https://github.com/heygen-com/hyperframes/commit/392a9d251a4feadbf7703ba4f9157c1857c7a59b)) - **Registry:** Force GSAP render at attach — seek(0) is a no-op on a fresh timeline ([020c8986f](https://github.com/heygen-com/hyperframes/commit/020c8986f46f795757203900cd251ad551ccc620)) - **Registry:** Make caption-pill-karaoke data-driven via caption-data runtime ([08620b75d](https://github.com/heygen-com/hyperframes/commit/08620b75df5275739fd9b0b8f480527fdc1d9a98)) - **Registry:** Make caption-weight-shift data-driven via caption-data runtime ([c67e9dc1f](https://github.com/heygen-com/hyperframes/commit/c67e9dc1f843122225468ce63a67c57f70c2bba2)) [View the full commit range](https://github.com/heygen-com/hyperframes/compare/v0.7.70...v0.7.71). Multi-worker renders using experimental fast capture (`--experimental-fast-capture`) now self-verify their frames on the disk path and automatically fall back to screenshot capture when GPU or memory pressure corrupts output — previously that corruption (e.g. a worker's frames displaced into vertical strips) could ship silently. ## Fixes - **Engine/Producer:** Parallel and sequential disk-path drawElement capture now verify sampled frames against pre-injection ground truth and screenshot-retry on a breach — closing the gap where `--experimental-fast-capture --workers N` shipped compositor-damaged frames with no error (PRINFRA-352) ([060b6f8ae](https://github.com/heygen-com/hyperframes/commit/060b6f8ae53e8ae243d8e2c2c3afd690dbe7f99c), [ec791e91d](https://github.com/heygen-com/hyperframes/commit/ec791e91d97c0070502c4ad208923d4f98005846), [9fc1c2f15](https://github.com/heygen-com/hyperframes/commit/9fc1c2f15990fc44f50533362bec2f075aa1d53d), [c85cfae8f](https://github.com/heygen-com/hyperframes/commit/c85cfae8fa97229e9c4f4d7217cf08b4bc859f3d)) - **Producer:** Close the orphaned probe session before a verify-triggered retry so the probe Chrome process isn't leaked under the GPU/memory pressure the retry is recovering from ([b8e101547](https://github.com/heygen-com/hyperframes/commit/b8e10154762f5a0fe71fb4a6a9f3d472e9bf99ec)) [View the full commit range](https://github.com/heygen-com/hyperframes/compare/v0.7.69...v0.7.70). HyperFrames now catches rotation pivot drift during layout audits, helping surface off-center spinners before render. This release also preserves editable \ line breaks in SDK text edits, strengthens producer font, probe, and worker-memory handling, and improves preflight and pre-commit feedback. ## Features - **Lint:** Add rotation_pivot_drift layout check ([222aec45a](https://github.com/heygen-com/hyperframes/commit/222aec45ab0553c014dddccd563e273affd9b71a), [#2741](https://github.com/heygen-com/hyperframes/pull/2741)) ## Fixes - **Sdk:** Keep \ line breaks editable and uncorrupted in setText ([dd7378bbd](https://github.com/heygen-com/hyperframes/commit/dd7378bbd934ecc0da85c1edfae7946ac7e2271a), [#2742](https://github.com/heygen-com/hyperframes/pull/2742)) - **Lint:** Address render preflight review feedback ([7a294f195](https://github.com/heygen-com/hyperframes/commit/7a294f19562928036dae20d5e73c2637d1e19060), [#2739](https://github.com/heygen-com/hyperframes/pull/2739)) - **Producer:** Resolve residual font and probe failures ([948264d6b](https://github.com/heygen-com/hyperframes/commit/948264d6b205cadd191e04f36af332ed4a6bb233), [#2738](https://github.com/heygen-com/hyperframes/pull/2738)) - **Hooks:** Pre-commit gate denies commit instead of ending the turn ([97ec7db5c](https://github.com/heygen-com/hyperframes/commit/97ec7db5cccd14a47fcfbe534d269dfea7a0d37d)) - **Producer:** Emit heap advisory at orchestrator, lock message + telemetry props with tests ([c6462a0a2](https://github.com/heygen-com/hyperframes/commit/c6462a0a225772c7a357afd5fe2f5c9a39bca238)) - **Engine:** Realistic worker memory budget + sizing/feedback telemetry ([12e599a6b](https://github.com/heygen-com/hyperframes/commit/12e599a6bac7dea5feec59c71dd0e5aeecab354e)) [View the full commit range](https://github.com/heygen-com/hyperframes/compare/v0.7.68...v0.7.69). Bug-fix release. The video coverage gate no longer aborts renders of looping short videos, and composition-level CSS with native CSS Nesting now applies to nested selectors instead of being silently ignored. ## Fixes - **Producer:** Credit looping short videos in coverage gate (#2665). A short clip in a longer slot with `loop` set delivers all its source frames once and reuses them per repeat; the gate now measures against source-source instead of unique-source-vs-slot, so a 3s looping clip in a 10s slot no longer aborts at 30% coverage ([a637f394e](https://github.com/heygen-com/hyperframes/commit/a637f394ee900c64c8f2e1ee78cf1e0ce17b8739), [#2732](https://github.com/heygen-com/hyperframes/pull/2732)) - **Core:** Preserve nested-rule selectors in composition CSS scoping (#2721). Native CSS Nesting (Chrome 112+ / Firefox 117+ / Safari 16.5+) now works inside a composition's `