zero-knowledge file sharing
default to mp4/aac for recording
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-16
+11
-16
web/src/pages/Upload.tsx
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web/src/pages/Upload.tsx
···
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type Status = "idle" | "encrypting" | "uploading";
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type View = "result" | "uploading" | "file" | "empty" | "recording";
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const isIOS =
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typeof navigator !== "undefined" &&
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(/iPad|iPhone|iPod/.test(navigator.userAgent) ||
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(navigator.platform === "MacIntel" && navigator.maxTouchPoints > 1));
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const REC_MIMES = isIOS
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? ["audio/mp4", "audio/webm;codecs=opus", "audio/webm", "audio/ogg;codecs=opus"]
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: ["audio/webm;codecs=opus", "audio/webm", "audio/mp4", "audio/ogg;codecs=opus"];
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const REC_MIMES = [
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"audio/mp4;codecs=mp4a.40.2",
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"audio/mp4",
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"audio/webm;codecs=opus",
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"audio/webm",
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];
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function pickRecMime(): string | null {
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const MR = (window as any).MediaRecorder;
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if (!MR) return null;
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for (const m of REC_MIMES) {
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if (MR.isTypeSupported?.(m)) return m;
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}
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return "";
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return null;
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}
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function extForAudio(mimeType: string): string {
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const base = mimeType.split(";")[0].toLowerCase();
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if (base.includes("mp4") || base.includes("aac") || base.includes("mpeg")) return "m4a";
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if (base.includes("ogg")) return "ogg";
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if (base.includes("wav")) return "wav";
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return "webm";
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return mimeType.toLowerCase().includes("mp4") ? "m4a" : "webm";
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}
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function formatTime(s: number) {
···
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} catch {}
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const chunks: BlobPart[] = [];
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const mr = new MediaRecorder(mediaStream, pickedMime ? { mimeType: pickedMime } : undefined);
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const mr = new MediaRecorder(mediaStream, { mimeType: pickedMime });
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mediaRecorder = mr;
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mr.ondataavailable = (e) => {
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if (e.data.size > 0) chunks.push(e.data);
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};
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mr.onstop = () => {
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const actualMime = mr.mimeType || pickedMime || "audio/webm";
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const baseType = actualMime.split(";")[0] || "audio/webm";
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const actualMime = mr.mimeType || pickedMime;
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const baseType = actualMime.split(";")[0];
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const ext = extForAudio(actualMime);
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const blob = new Blob(chunks, { type: baseType });
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const ts = new Date().toISOString().replace(/[:.]/g, "-").slice(0, 19);