v3.8.5

- Introduced `outputFormat` state in `WccRecordingPanel` for selecting between MP4 and WebM formats.
- Updated `RecorderService` to handle MP4 conversion using mediabunny.
- Added type stubs for `MediaStreamAudioTrack` and `MediaStreamVideoTrack` to ensure type safety.
- Updated documentation to reflect changes in output format handling.

changelog.md

@@ -1,5 +1,27 @@
 # Changelog
 
+## 2026-04-12 - 3.8.5 - fix(recording)
+improve recording capture quality and align preview button loading state
+
+- request 60fps screen capture and increase recorder bitrate to 8 Mbps for smoother, higher-quality videos
+- update preview button layout to use inline flex alignment so spinner and label stay properly aligned
+
+## 2026-04-12 - 3.8.4 - fix(repo)
+no changes to commit
+
+
+## 2026-04-12 - 3.8.3 - fix(sidebar)
+include component tag names in sidebar search filtering
+
+- Updates sidebar section and entry filtering to match search queries against each item's custom element tag name via the `is` field.
+- Keeps existing name and demo group matching behavior while making search results easier to find by tag.
+
+## 2026-04-12 - 3.8.2 - fix(sidebar)
+restore search input focus after clearing the sidebar search
+
+- Updates the sidebar clearSearch behavior to focus the .search-input element after resetting the query and dispatching searchChanged.
+- Improves search usability by letting users continue typing immediately after clearing the current search.
+
 ## 2026-04-12 - 3.8.1 - fix(build)
 migrate smart config and update build tooling for latest tsbundle and TypeScript defaults
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@design.estate/dees-wcctools",
-  "version": "3.8.1",
+  "version": "3.8.5",
   "private": false,
   "description": "A set of web component tools for creating element catalogues, enabling the structured development and documentation of custom elements and pages.",
   "exports": {
@@ -20,7 +20,8 @@
     "@design.estate/dees-domtools": "^2.5.4",
     "@design.estate/dees-element": "^2.2.4",
     "@push.rocks/smartdelay": "^3.0.5",
-    "lit": "^3.3.2"
+    "lit": "^3.3.2",
+    "mediabunny": "^1.40.1"
   },
   "devDependencies": {
     "@api.global/typedserver": "^8.4.6",
@@ -59,5 +60,11 @@
     "element testing",
     "page development"
   ],
-  "packageManager": "pnpm@10.11.0+sha512.6540583f41cc5f628eb3d9773ecee802f4f9ef9923cc45b69890fb47991d4b092964694ec3a4f738a420c918a333062c8b925d312f42e4f0c263eb603551f977"
+  "packageManager": "pnpm@10.11.0+sha512.6540583f41cc5f628eb3d9773ecee802f4f9ef9923cc45b69890fb47991d4b092964694ec3a4f738a420c918a333062c8b925d312f42e4f0c263eb603551f977",
+  "pnpm": {
+    "overrides": {
+      "@types/dom-webcodecs": "./ts_web/types/dom-webcodecs-stub",
+      "@types/dom-mediacapture-transform": "./ts_web/types/dom-mediacapture-stub"
+    }
+  }
 }

pnpm-lock.yaml

@@ -4,6 +4,10 @@ settings:
   autoInstallPeers: true
   excludeLinksFromLockfile: false
 
+overrides:
+  '@types/dom-webcodecs': ./ts_web/types/dom-webcodecs-stub
+  '@types/dom-mediacapture-transform': ./ts_web/types/dom-mediacapture-stub
+
 importers:
 
   .:
@@ -20,6 +24,9 @@ importers:
       lit:
         specifier: ^3.3.2
         version: 3.3.2
+      mediabunny:
+        specifier: ^1.40.1
+        version: 1.40.1
     devDependencies:
       '@api.global/typedserver':
         specifier: ^8.4.6
@@ -3115,6 +3122,9 @@ packages:
   mdurl@2.0.0:
     resolution: {integrity: sha512-Lf+9+2r+Tdp5wXDXC4PcIBjTDtq4UKjCPMQhKIuzpJNW0b96kVqSwW0bT7FhRSfmAiFYgP+SCRvdrDozfh0U5w==}
 
+  mediabunny@1.40.1:
+    resolution: {integrity: sha512-HU/stGzAkdWaJIly6ypbUVgAUvT9kt39DIg0IaErR7/1fwtTmgUYs4i8uEPYcgcjPjbB9gtBmUXOLnXi6J2LDw==}
+
   memory-pager@1.5.0:
     resolution: {integrity: sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg==}
 
@@ -8621,6 +8631,11 @@ snapshots:
 
   mdurl@2.0.0: {}
 
+  mediabunny@1.40.1:
+    dependencies:
+      '@types/dom-mediacapture-transform': link:ts_web/types/dom-mediacapture-stub
+      '@types/dom-webcodecs': link:ts_web/types/dom-webcodecs-stub
+
   memory-pager@1.5.0: {}
 
   micromark-core-commonmark@2.0.3:

readme.hints.md

@@ -1,5 +1,13 @@
 # Project Hints and Findings
 
+## Mediabunny / @types/dom-webcodecs Override (2026-04-12)
+
+The `mediabunny` package depends on `@types/dom-webcodecs` and `@types/dom-mediacapture-transform`, which conflict with TypeScript 6's built-in WebCodecs types in `lib.dom.d.ts`. We override both via `pnpm.overrides` in `package.json`, pointing them to local stubs in `ts_web/types/`:
+- `dom-webcodecs-stub/` — empty, since TS6 provides these types natively
+- `dom-mediacapture-stub/` — provides `MediaStreamVideoTrack` and `MediaStreamAudioTrack` interfaces (not yet in `lib.dom.d.ts`)
+
+If mediabunny drops these `@types` dependencies in a future version, the overrides can be removed.
+
 ## TypeScript 6.0 & Build Tooling (2026-04-12)
 
 ### TypeScript 6.0 Strict Defaults

ts_web/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@design.estate/dees-wcctools',
-  version: '3.8.1',
+  version: '3.8.5',
   description: 'A set of web component tools for creating element catalogues, enabling the structured development and documentation of custom elements and pages.'
 }

ts_web/elements/wcc-recording-panel.ts

@@ -1,5 +1,5 @@
 import { DeesElement, customElement, html, css, property, state, type TemplateResult } from '@design.estate/dees-element';
-import { RecorderService } from '../services/recorder.service.js';
+import { RecorderService, type TOutputFormat } from '../services/recorder.service.js';
 import type { WccDashboard } from './wcc-dashboard.js';
 
 @customElement('wcc-recording-panel')
@@ -16,6 +16,9 @@ export class WccRecordingPanel extends DeesElement {
   @state()
   accessor recordingMode: 'viewport' | 'screen' = 'viewport';
 
+  @state()
+  accessor outputFormat: TOutputFormat = 'mp4';
+
   @state()
   accessor audioEnabled: boolean = false;
 
@@ -380,6 +383,9 @@ export class WccRecordingPanel extends DeesElement {
         font-weight: 500;
         cursor: pointer;
         transition: all 0.15s ease;
+        display: inline-flex;
+        align-items: center;
+        gap: 0.5rem;
       }
 
       .preview-btn.secondary {
@@ -546,7 +552,7 @@ export class WccRecordingPanel extends DeesElement {
         border-radius: 50%;
         border-top-color: white;
         animation: spin 0.8s linear infinite;
-        margin-right: 0.5rem;
+        flex-shrink: 0;
       }
 
       @keyframes spin {
@@ -591,6 +597,24 @@ export class WccRecordingPanel extends DeesElement {
             </div>
           </div>
 
+          <div class="recording-option-group">
+            <div class="recording-option-label">Format</div>
+            <div class="recording-mode-buttons">
+              <button
+                class="recording-mode-btn ${this.outputFormat === 'mp4' ? 'selected' : ''}"
+                @click=${() => this.outputFormat = 'mp4'}
+              >
+                MP4 (H.264)
+              </button>
+              <button
+                class="recording-mode-btn ${this.outputFormat === 'webm' ? 'selected' : ''}"
+                @click=${() => this.outputFormat = 'webm'}
+              >
+                WebM (VP9)
+              </button>
+            </div>
+          </div>
+
           <div class="recording-option-group">
             <div class="recording-option-label">Audio</div>
             <div class="audio-toggle">
@@ -716,7 +740,9 @@ export class WccRecordingPanel extends DeesElement {
               ?disabled=${this.isExporting}
               @click=${() => this.downloadRecording()}
             >
-              ${this.isExporting ? html`<span class="export-spinner"></span>Exporting...` : 'Download WebM'}
+              ${this.isExporting
+                ? html`<span class="export-spinner"></span>${this.outputFormat === 'mp4' ? 'Converting to MP4...' : 'Exporting...'}`
+                : `Download ${this.outputFormat === 'mp4' ? 'MP4' : 'WebM'}`}
             </button>
           </div>
         </div>
@@ -764,7 +790,7 @@ export class WccRecordingPanel extends DeesElement {
       await this.recorderService.startRecording({
         mode: this.recordingMode,
         audioDeviceId: this.audioEnabled ? this.selectedMicrophoneId : undefined,
-        viewportElement
+        viewportElement,
       });
 
       this.panelState = 'recording';
@@ -817,7 +843,7 @@ export class WccRecordingPanel extends DeesElement {
     try {
       let blobToDownload: Blob;
 
-      // Handle trimming if needed
+      // Handle trimming if needed — always produces WebM
       const needsTrim = this.trimStart > 0.1 || this.trimEnd < this.videoDuration - 0.1;
 
       if (needsTrim) {
@@ -831,9 +857,15 @@ export class WccRecordingPanel extends DeesElement {
         blobToDownload = recordedBlob;
       }
 
+      // Convert WebM → MP4 if MP4 format selected
+      if (this.outputFormat === 'mp4') {
+        blobToDownload = await this.recorderService.convertToMp4(blobToDownload);
+      }
+
       // Trigger download
       const timestamp = new Date().toISOString().replace(/[:.]/g, '-').slice(0, 19);
-      const filename = `wcctools-recording-${timestamp}.webm`;
+      const ext = this.outputFormat === 'mp4' ? 'mp4' : 'webm';
+      const filename = `wcctools-recording-${timestamp}.${ext}`;
 
       const url = URL.createObjectURL(blobToDownload);
       const a = document.createElement('a');

ts_web/elements/wcc-sidebar.ts

@@ -654,6 +654,8 @@ export class WccSidebar extends DeesElement {
       const entries = getSectionItems(section);
       const filteredEntries = entries.filter(([name, item]) => {
         if (this.matchesSearch(name)) return true;
+        const tagName = (item as any).is;
+        if (tagName && this.matchesSearch(tagName)) return true;
         const rawGroups = (item as any).demoGroups;
         if (!rawGroups) return false;
         const groups: string[] = Array.isArray(rawGroups) ? rawGroups : [rawGroups];
@@ -692,6 +694,8 @@ export class WccSidebar extends DeesElement {
     // Filter entries by search query
     const filteredEntries = entries.filter(([name, item]) => {
       if (this.matchesSearch(name)) return true;
+      const tagName = (item as any).is;
+      if (tagName && this.matchesSearch(tagName)) return true;
       const rawGroups = (item as any).demoGroups;
       if (!rawGroups) return false;
       const groups: string[] = Array.isArray(rawGroups) ? rawGroups : [rawGroups];
@@ -867,6 +871,8 @@ export class WccSidebar extends DeesElement {
   private clearSearch() {
     this.searchQuery = '';
     this.dispatchEvent(new CustomEvent('searchChanged', { detail: this.searchQuery }));
+    const input = this.shadowRoot.querySelector('.search-input') as HTMLInputElement;
+    if (input) input.focus();
   }
 
   private handleMenuScroll(e: Event) {

ts_web/index.ts

@@ -4,7 +4,7 @@ import type { TTemplateFactory } from './elements/wcctools.helpers.js';
 import type { IWccConfig, IWccSection } from './wcctools.interfaces.js';
 
 // Export recording components and service
-export { RecorderService, type IRecorderEvents, type IRecordingOptions } from './services/recorder.service.js';
+export { RecorderService, type IRecorderEvents, type IRecordingOptions, type TOutputFormat } from './services/recorder.service.js';
 export { WccRecordButton } from './elements/wcc-record-button.js';
 export { WccRecordingPanel } from './elements/wcc-recording-panel.js';
 

ts_web/services/recorder.service.ts

@@ -1,7 +1,11 @@
 /**
- * RecorderService - Handles all MediaRecorder, audio monitoring, and video export logic
+ * RecorderService - Handles all MediaRecorder, audio monitoring, and video export logic.
+ * Recording always uses MediaRecorder → WebM (the reliable browser path).
+ * MP4 output is produced by converting WebM → MP4 via mediabunny at export time.
  */
 
+export type TOutputFormat = 'webm' | 'mp4';
+
 export interface IRecorderEvents {
   onDurationUpdate?: (duration: number) => void;
   onRecordingComplete?: (blob: Blob) => void;
@@ -14,6 +18,7 @@ export interface IRecordingOptions {
   mode: 'viewport' | 'screen';
   audioDeviceId?: string;
   viewportElement?: HTMLElement;
+  outputFormat?: TOutputFormat;
 }
 
 export class RecorderService {
@@ -24,6 +29,7 @@ export class RecorderService {
   private _duration: number = 0;
   private _recordedBlob: Blob | null = null;
   private _isRecording: boolean = false;
+  private _outputFormat: TOutputFormat = 'webm';
 
   // Audio monitoring state
   private audioContext: AudioContext | null = null;
@@ -56,6 +62,10 @@ export class RecorderService {
     return this._recordedBlob;
   }
 
+  get outputFormat(): TOutputFormat {
+    return this._outputFormat;
+  }
+
   // Update event callbacks
   setEvents(events: IRecorderEvents): void {
     this.events = { ...this.events, ...events };
@@ -132,13 +142,16 @@ export class RecorderService {
 
   async startRecording(options: IRecordingOptions): Promise<void> {
     try {
+      this._outputFormat = options.outputFormat || 'webm';
+
       // Stop audio monitoring before recording
       this.stopAudioMonitoring();
 
       // Get video stream based on mode
       const displayMediaOptions: DisplayMediaStreamOptions = {
         video: {
-          displaySurface: options.mode === 'viewport' ? 'browser' : 'monitor'
+          displaySurface: options.mode === 'viewport' ? 'browser' : 'monitor',
+          frameRate: { ideal: 60 },
         } as MediaTrackConstraints,
         audio: false
       };
@@ -182,12 +195,23 @@ export class RecorderService {
       // Store stream for cleanup
       this.currentStream = combinedStream;
 
-      // Create MediaRecorder
+      // Handle stream ending (user clicks "Stop sharing")
+      videoStream.getVideoTracks()[0].onended = () => {
+        if (this._isRecording) {
+          this.stopRecording();
+          this.events.onStreamEnded?.();
+        }
+      };
+
+      // Always record as WebM — conversion to MP4 happens at export time
       const mimeType = MediaRecorder.isTypeSupported('video/webm;codecs=vp9')
         ? 'video/webm;codecs=vp9'
         : 'video/webm';
 
-      this.mediaRecorder = new MediaRecorder(combinedStream, { mimeType });
+      this.mediaRecorder = new MediaRecorder(combinedStream, {
+        mimeType,
+        videoBitsPerSecond: 8_000_000, // 8 Mbps for smooth, high-quality capture
+      });
       this.recordedChunks = [];
 
       this.mediaRecorder.ondataavailable = (e) => {
@@ -198,14 +222,6 @@ export class RecorderService {
 
       this.mediaRecorder.onstop = () => this.handleRecordingComplete();
 
-      // Handle stream ending (user clicks "Stop sharing")
-      videoStream.getVideoTracks()[0].onended = () => {
-        if (this._isRecording) {
-          this.stopRecording();
-          this.events.onStreamEnded?.();
-        }
-      };
-
       this.mediaRecorder.start(1000); // Capture in 1-second chunks
 
       // Start duration timer
@@ -236,9 +252,7 @@ export class RecorderService {
   }
 
   private async handleRecordingComplete(): Promise<void> {
-    // Create blob from recorded chunks
     const blob = new Blob(this.recordedChunks, { type: 'video/webm' });
-
     this._recordedBlob = blob;
 
     // Stop all tracks
@@ -251,7 +265,51 @@ export class RecorderService {
     this.events.onRecordingComplete?.(this._recordedBlob);
   }
 
-  // ==================== Trim & Export ====================
+  // ==================== Conversion & Export ====================
+
+  /**
+   * Converts a WebM blob to MP4 using mediabunny's Conversion API.
+   * Uses WebCodecs for hardware-accelerated H.264 encoding.
+   */
+  async convertToMp4(webmBlob: Blob): Promise<Blob> {
+    const {
+      Input, Output, Conversion, BlobSource, BufferTarget, Mp4OutputFormat, WEBM, QUALITY_HIGH,
+    } = await import('mediabunny');
+
+    const input = new Input({
+      source: new BlobSource(webmBlob),
+      formats: [WEBM],
+    });
+
+    const target = new BufferTarget();
+    const output = new Output({
+      format: new Mp4OutputFormat({ fastStart: 'in-memory' }),
+      target,
+    });
+
+    const conversion = await Conversion.init({
+      input,
+      output,
+      // Force transcoding from VP9 → H.264 and Opus → AAC
+      video: {
+        codec: 'avc',
+        bitrate: QUALITY_HIGH,
+        fit: 'contain',
+      },
+      audio: {
+        codec: 'aac',
+        bitrate: QUALITY_HIGH,
+      },
+    });
+    await conversion.execute();
+
+    const buffer = target.buffer;
+    if (!buffer || buffer.byteLength === 0) {
+      throw new Error('MP4 conversion produced empty output');
+    }
+
+    return new Blob([buffer], { type: 'video/mp4' });
+  }
 
   async exportTrimmedVideo(
     videoElement: HTMLVideoElement,

ts_web/types/dom-mediacapture-stub/index.d.ts

@@ -0,0 +1,12 @@
+// Minimal type stubs for MediaCapture Transform API types not yet in lib.dom.d.ts.
+// These specialize MediaStreamTrack for audio/video so mediabunny's API is type-safe.
+
+interface MediaStreamAudioTrack extends MediaStreamTrack {
+  readonly kind: 'audio';
+  clone(): MediaStreamAudioTrack;
+}
+
+interface MediaStreamVideoTrack extends MediaStreamTrack {
+  readonly kind: 'video';
+  clone(): MediaStreamVideoTrack;
+}

ts_web/types/dom-mediacapture-stub/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "@types/dom-mediacapture-transform",
+  "version": "0.0.0",
+  "description": "Minimal stub providing MediaStreamVideoTrack/MediaStreamAudioTrack for TS 6",
+  "types": "index.d.ts"
+}

ts_web/types/dom-webcodecs-stub/index.d.ts

@@ -0,0 +1,2 @@
+// Empty stub: TypeScript 6 includes WebCodecs types in lib.dom.d.ts natively.
+// This prevents @types/dom-webcodecs from conflicting with the built-in types.

ts_web/types/dom-webcodecs-stub/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "@types/dom-webcodecs",
+  "version": "0.0.0",
+  "description": "Empty stub — TypeScript 6 provides WebCodecs types natively in lib.dom.d.ts",
+  "types": "index.d.ts"
+}