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…erallorg#856) Break the video editor into focused modules, restore responsive project switching and editor interactions, tighten local media path handling, and incorporate the completed CodeRabbit review fixes.
Hide the legacy pipeline choice while retaining the internal fallback, and improve Lightning exports with rotating localised tips and announcement messages.
…ws-recording-reliability Fix Windows recording lifecycle, webcam sync, and captions
…ture-protection Keep the HUD out of recordings across capture backends
…-platform-update-toast-visibility Fix invisible update notifications on Windows and Linux
…indow-recording-crop Record selected windows by cropping full-screen captures
…e-console-eio Prevent closed console streams from crashing Recordly
…ystem-and-capture-picker # Conflicts: # tests/ui/hud-layout.spec.ts
…#1090 Preserve both original author commits. Use the author's live-overlay sender guard for completion and context requests. Retain selection-only HUD behavior, existing failure toasts, and synchronous drag refs; add coverage for rapid area moves/resizes and failure versus cancellation messages.
…rdly-user-system-and-capture-picker Add source selection and authenticated account and permission settings
# Conflicts: # src/lib/exporter/modernFrameRenderer.ts
# Conflicts: # src/components/video-editor/videoPlayback/clipPlayback.ts
…rt-audio-merge-validation Fix Lightning export fallback, companion audio routing, and seek playback
The ScreenCaptureKit helper takes its settings from the 3840x2160 H.264 preset and sets the full Retina output size. The preset only enables the hardware encoder, it does not require it, and Apple's H.264 hardware encoder stops at 4096 px wide. A 2056x1329 pt display records at 4112x2658, so every frame was encoded in software: 392% encoder CPU and 19 fps in a 20 s test on an M1 Pro. preferredVideoCodec(width:height:) opens a VTCompressionSession with the hardware encoder required at the exact output size. H.264 stays when its hardware takes the size; otherwise hardware HEVC is used (1% CPU, 31 fps in the same test), and software H.264 stays the last resort. The HEVC settings keep the H.264 preset's bit rate and key frame interval, so file sizes stay the same. The chosen codec is logged as VIDEO_CODEC on stderr.
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Check name Status Explanation Title check The title clearly and concisely describes the main change: using hardware HEVC when the screen dimensions exceed hardware H.264 support. Description check The description is complete and relevant. It explains the problem, motivation, implementation, fallback behavior, testing results, and manual validation steps. The screenshot and related-issue items a… Linked Issues check Check skipped because no linked issues were found for this pull request. Out of Scope Changes check Check skipped because no linked issues were found for this pull request. Full details: Description check
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Inline comments:
Review comments at @electron/native/ScreenCaptureKitRecorder.swift:
- Around line 311-316: Update the video writer setup around preferredVideoCodec
to preserve the H.264 settings and retry assetWriter.canAdd with a new H.264
input if the HEVC input is rejected. Keep the existing error when both codecs
are rejected, and log VIDEO_CODEC only after the fallback decision so it reports
the codec actually used for both bi-planar YUV and crop-mode BGRA input.
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electron/native/ScreenCaptureKitRecorder.codec.test.tselectron/native/ScreenCaptureKitRecorder.swiftelectron/native/bin/darwin-arm64/recordly-screencapturekit-helperelectron/native/bin/darwin-x64/recordly-screencapturekit-helper
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If AVAssetWriter can't add the HEVC input, the helper now builds the H.264 input from the same settings instead of failing the recording. VIDEO_CODEC is logged after that decision, so it names the codec actually used. The prebuilt darwin helpers are rebuilt.
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Description
ScreenCaptureKitRecorder.swiftbuilds its video settings fromAVOutputSettingsAssistant(preset: .preset3840x2160), which is H.264, and then sets the width and height to the full Retina size of the display. The preset only enables the hardware encoder (EnableHardwareAcceleratedVideoEncoder = 1), it doesn't require it. So when the hardware encoder can't take the size, VideoToolbox quietly falls back to software H.264.Apple's H.264 hardware encoder stops at 4096 px wide. A 16" MacBook Pro set to "More Space" is 2056x1329 points, so the helper records 4112x2658, and every frame is encoded in software.
This PR adds
preferredVideoCodec(width:height:). It opens aVTCompressionSessionwithRequireHardwareAcceleratedVideoEncoderat the exact output size:For HEVC it keeps the H.264 preset's bit rate, key frame interval and frame rate, and only swaps the codec and profile (
HEVC_Main_AutoLevel). The HEVC preset itself asks for 85.8 Mbit/s at this size, about 3.4x the H.264 preset's 25 Mbit/s, so I didn't use it. The helper also printsVIDEO_CODEC <codec> <w>x<h>to stderr, so it shows up in the native capture diagnostics.Motivation
What I measured on an M1 Pro (macOS 27.0.1), 20 s of the main display at 4112x2658 with moving content on screen, the helper built from
mainvs. this branch:mainVTEncoderXPCServiceCPUIn a 5-minute test recording from the app at that size, the encoder used 464% CPU, load average reached 103 and the whole machine lagged. Encoder memory stayed flat around 1.5 GB, so it's CPU, not a leak.
The hardware limits, from
VTCompressionSessionCreatewith hardware required on the same Mac:So nothing changes for displays up to 4096 px wide.
The prebuilt helpers in
electron/native/bin/darwin-{arm64,x64}/are rebuilt with the flags fromscripts/build-native-helpers.mjs, as in earlier helper changes.One cost moves rather than disappears: the native static-layout export makes an H.264 proxy for any source that isn't H.264 (
shouldCreateNativeStaticLayoutSourceProxy), so recordings wider than 4096 px now take that transcode at export time. Before, they were encoded in software during the recording, which is where the lag hurt.HEVC files work in the editor and the exporter. I checked a file written by the new helper in Electron 43.1.0:
<video>plays it at 4112x2658, andweb-demuxer+VideoDecoderdecodes all 653 frames (hardware decode is supported, software isn't).Type of Change
Testing Guide
npx vitest run electron/native/ScreenCaptureKitRecorder.codec.test.tscompiles the new functions against the real VideoToolbox and AVFoundation (macOS only, like the lifecycle test). It takes the realAVOutputSettingsAssistantH.264 output, converts it withhevcVideoSettings, adds it to anAVAssetWriterand writes 10 frames at 4112x2658, then checks the file ishvc1. A key HEVC doesn't accept raisesNSInvalidArgumentExceptionthere and fails the test (I checked by leavingH264EntropyModein). It also checks the settings keep the bit rate and key frame interval. On a machine with no hardware HEVC encoder, such as a CI VM, the write step is skipped.VTEncoderXPCServicenear idle instead of several cores.ffprobeon the file showshevc (Main) (hvc1).Checklist
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