feat(export): always export H.264 and drop the codec picker - #890
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The picker offered two codecs where one was the right answer and the other was a trap the UI itself had to warn about. H.265 is software-only on Linux, slower than software on the measured Macs (452 fps software against 303 through VideoToolbox at 1080p60), and the files half the players cannot open. The CLI already exported H.264 only and nobody asked for more. Also drop the idle plate that said to pick a format: it was written for the UI that hid the format toggle under Advanced, and stayed up through the save picker where it was simply false.
editor-shell.md still described the named destinations under Advanced, which #883 already removed. export-pipeline.md and native-compositor.md now say the dialog always sends h264 while the pipeline still encodes h265 internally, and the manual checklist drops both its destination steps and its H.264/H.265 one.
The English pages stop offering a codec choice and stop describing the named destinations that PR 883 removed. The comparison bullets that sold codec choice over Cap and Screen Studio go with it, since they would be false now. Translated side: 140 mechanical collapses of the H.264-or-H.265 pairs across 84 files, then the rewritten passages per locale. i18n:sync --accept records the new English strings.
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Included review availability: This review used your included allowance. Your plan provides up to 8 included reviews per hour; 5 remain after this review. 📝 WalkthroughWalkthroughThe export dialog now presents format, quality, and frame-rate settings without a codec picker or idle hint. MP4 exports from the dialog request H.264. Showcase content, translations, and documentation describe the updated panel and codec information. ChangesExport dialog and supporting content
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature Merge Risk: ⚪ Minimal · up to No actionable merge-blocking issue is established for the current change; it is mergeable after normal checks. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The export choice is narrower, but the reviewed path still uses the existing save picker and native exporter. No new security exposure was identified. Review of the wider changed surface is incomplete. Retained concerns Security review detailsSecurity Blast Radius
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🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 25.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 5 files. (1 skipped: 1 unsupported.)
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Review comments at @technical-documentation/testing/manual-e2e-checklist.md:
- Line 465: Update the export checklist introduction to describe the current
single settings-panel dialog flow, removing the outdated four-destination and
collapsed Advanced settings description.
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📒 Files selected for processing (146)
src/components/ai-edition/ExportDialog.params.test.tsxsrc/components/ai-edition/ExportDialog.tsxsrc/i18n/locales/ar/editor.jsonsrc/i18n/locales/cs/editor.jsonsrc/i18n/locales/de/editor.jsonsrc/i18n/locales/en/editor.jsonsrc/i18n/locales/es/editor.jsonsrc/i18n/locales/fr/editor.jsonsrc/i18n/locales/it/editor.jsonsrc/i18n/locales/ja-JP/editor.jsonsrc/i18n/locales/ko-KR/editor.jsonsrc/i18n/locales/pt-BR/editor.jsonsrc/i18n/locales/ru/editor.jsonsrc/i18n/locales/tr/editor.jsonsrc/i18n/locales/vi/editor.jsonsrc/i18n/locales/zh-CN/editor.jsonsrc/i18n/locales/zh-TW/editor.jsontechnical-documentation/architecture/editor-shell.mdtechnical-documentation/architecture/export-pipeline.mdtechnical-documentation/architecture/native-compositor.mdtechnical-documentation/testing/manual-e2e-checklist.mdwebsite/docs/cli.mdwebsite/docs/export.mdwebsite/docs/guides/product-demo-video.mdwebsite/docs/installation.mdwebsite/docs/intro.mdwebsite/docs/quick-start.mdwebsite/i18n/code.source.jsonwebsite/i18n/de/code.jsonwebsite/i18n/de/docusaurus-plugin-content-docs/current/cli.mdwebsite/i18n/de/docusaurus-plugin-content-docs/current/export.mdwebsite/i18n/de/docusaurus-plugin-content-docs/current/guides/product-demo-video.mdwebsite/i18n/de/docusaurus-plugin-content-docs/current/installation.mdwebsite/i18n/de/docusaurus-plugin-content-docs/current/intro.mdwebsite/i18n/de/docusaurus-plugin-content-docs/current/quick-start.mdwebsite/i18n/de/docusaurus-plugin-content-pages/alternatives/camtasia.mdxwebsite/i18n/de/docusaurus-plugin-content-pages/alternatives/loom.mdxwebsite/i18n/de/docusaurus-plugin-content-pages/alternatives/screen-studio.mdxwebsite/i18n/de/docusaurus-plugin-content-pages/compare/openscreen-vs-cap.mdxwebsite/i18n/de/docusaurus-plugin-content-pages/compare/openscreen-vs-obs.mdxwebsite/i18n/de/docusaurus-plugin-content-pages/screen-recorder-linux.mdxwebsite/i18n/de/docusaurus-plugin-content-pages/screen-recorder-mac.mdxwebsite/i18n/de/docusaurus-plugin-content-pages/screen-recorder-windows.mdxwebsite/i18n/es/code.jsonwebsite/i18n/es/docusaurus-plugin-content-docs/current/cli.mdwebsite/i18n/es/docusaurus-plugin-content-docs/current/export.mdwebsite/i18n/es/docusaurus-plugin-content-docs/current/guides/product-demo-video.mdwebsite/i18n/es/docusaurus-plugin-content-docs/current/installation.mdwebsite/i18n/es/docusaurus-plugin-content-docs/current/intro.mdwebsite/i18n/es/docusaurus-plugin-content-docs/current/quick-start.mdwebsite/i18n/es/docusaurus-plugin-content-pages/alternatives/camtasia.mdxwebsite/i18n/es/docusaurus-plugin-content-pages/alternatives/loom.mdxwebsite/i18n/es/docusaurus-plugin-content-pages/alternatives/screen-studio.mdxwebsite/i18n/es/docusaurus-plugin-content-pages/compare/openscreen-vs-cap.mdxwebsite/i18n/es/docusaurus-plugin-content-pages/compare/openscreen-vs-obs.mdxwebsite/i18n/es/docusaurus-plugin-content-pages/screen-recorder-linux.mdxwebsite/i18n/es/docusaurus-plugin-content-pages/screen-recorder-mac.mdxwebsite/i18n/es/docusaurus-plugin-content-pages/screen-recorder-windows.mdxwebsite/i18n/fr/code.jsonwebsite/i18n/fr/docusaurus-plugin-content-docs/current/cli.mdwebsite/i18n/fr/docusaurus-plugin-content-docs/current/export.mdwebsite/i18n/fr/docusaurus-plugin-content-docs/current/guides/product-demo-video.mdwebsite/i18n/fr/docusaurus-plugin-content-docs/current/installation.mdwebsite/i18n/fr/docusaurus-plugin-content-docs/current/intro.mdwebsite/i18n/fr/docusaurus-plugin-content-docs/current/quick-start.mdwebsite/i18n/fr/docusaurus-plugin-content-pages/alternatives/camtasia.mdxwebsite/i18n/fr/docusaurus-plugin-content-pages/alternatives/loom.mdxwebsite/i18n/fr/docusaurus-plugin-content-pages/alternatives/screen-studio.mdxwebsite/i18n/fr/docusaurus-plugin-content-pages/compare/openscreen-vs-cap.mdxwebsite/i18n/fr/docusaurus-plugin-content-pages/compare/openscreen-vs-obs.mdxwebsite/i18n/fr/docusaurus-plugin-content-pages/screen-recorder-linux.mdxwebsite/i18n/fr/docusaurus-plugin-content-pages/screen-recorder-mac.mdxwebsite/i18n/fr/docusaurus-plugin-content-pages/screen-recorder-windows.mdxwebsite/i18n/ja/code.jsonwebsite/i18n/ja/docusaurus-plugin-content-docs/current/cli.mdwebsite/i18n/ja/docusaurus-plugin-content-docs/current/export.mdwebsite/i18n/ja/docusaurus-plugin-content-docs/current/guides/product-demo-video.mdwebsite/i18n/ja/docusaurus-plugin-content-docs/current/installation.mdwebsite/i18n/ja/docusaurus-plugin-content-docs/current/intro.mdwebsite/i18n/ja/docusaurus-plugin-content-docs/current/quick-start.mdwebsite/i18n/ja/docusaurus-plugin-content-pages/alternatives/camtasia.mdxwebsite/i18n/ja/docusaurus-plugin-content-pages/alternatives/loom.mdxwebsite/i18n/ja/docusaurus-plugin-content-pages/alternatives/screen-studio.mdxwebsite/i18n/ja/docusaurus-plugin-content-pages/compare/openscreen-vs-cap.mdxwebsite/i18n/ja/docusaurus-plugin-content-pages/compare/openscreen-vs-obs.mdxwebsite/i18n/ja/docusaurus-plugin-content-pages/screen-recorder-linux.mdxwebsite/i18n/ja/docusaurus-plugin-content-pages/scre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💤 Files with no reviewable changes (16)
- src/i18n/locales/vi/editor.json
- src/i18n/locales/pt-BR/editor.json
- website/src/components/Showcase/styles.module.css
- src/i18n/locales/ja-JP/editor.json
- src/i18n/locales/tr/editor.json
- src/i18n/locales/es/editor.json
- src/i18n/locales/ar/editor.json
- src/i18n/locales/fr/editor.json
- src/i18n/locales/cs/editor.json
- src/i18n/locales/en/editor.json
- src/i18n/locales/ko-KR/editor.json
- src/i18n/locales/ru/editor.json
- src/i18n/locales/de/editor.json
- src/i18n/locales/it/editor.json
- src/i18n/locales/zh-TW/editor.json
- src/i18n/locales/zh-CN/editor.json
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The checks were rewritten but the section introduction still sent testers to four destinations under Advanced. Reported by CodeRabbit on #890.
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The checks were rewritten but the section introduction still sent testers to four destinations under Advanced. Reported by CodeRabbit on #890.
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Summary
The export dialog offered two codecs where one was the right answer and the other was a trap the UI itself had to warn about. Every MP4 is now H.264.
Also drops the idle plate that said Pick a format and press Export to start — it was written for the UI that hid the format toggle under Advanced, and stayed up through the save picker where it was simply false.
Why H.265 goes (measured in this repo, not opinion):
installation.mdsays it in as many words — H.264 goes toh264_vaapi, every H.265 export is software.pipeline_macos.rs: HEVC 1080p60 software 452 fps against VideoToolbox 303, 4K60 179 against 102. And every H.265 export forces a system-memory copy where H.264 renders straight into the encoder's buffer.The native HEVC pipeline stays compiled and documented:
ExportVideoCodecstill acceptsh265, nothing offers it.Related issue
None.
Type of change
Release impact
Desktop impact
Screenshots / video
Before: Format, Quality (720p / 1080p / Source), Frame rate, Codec (H.264 | H.265) side by side, and a grey plate reading Pick a format and press Export to start.
After: Format, Quality, Frame rate — no codec row, no plate. The progress block appears only once an export runs.
Testing
npx vitest --run src/components/ai-edition/ExportDialog.params.test.tsx— 7 passed, including the new guard: no button named H.265, no idle plate, and the export params carrycodec: "h264"npm run test— 3690 passed, 4 skippednpx tsc --noEmitandnpx tsc -p tsconfig.test.json --noEmitnpm run i18n:check(app) — 14 locales in sync, 871 keys resolvenpm run buildinwebsite/— all 8 locales build clean (the only guard on translated anchors and links)npm run i18n:sync -- --acceptinwebsite/records the new English stringsTranslations
Mechanical collapse of the H.264-or-H.265 pairs: 140 occurrences across 84 files. The rewritten passages (the destinations paragraph #883 left stale, the two Codec choice bullets that compared against Cap and Screen Studio, the Showcase drawing label) were carried per locale.
The Codec choice bullets are deleted rather than inverted — they would be false now. That costs one comparison point on
compare/openscreen-vs-capandalternatives/screen-studio.Summary by CodeRabbit