diff --git a/src/client/admin/EmitterInfo.svelte b/src/client/admin/EmitterInfo.svelte
index 7b38403..70cdedd 100644
--- a/src/client/admin/EmitterInfo.svelte
+++ b/src/client/admin/EmitterInfo.svelte
@@ -6,6 +6,7 @@
 	import iconDelete from "bootstrap-icons/icons/trash.svg?raw";
 	import iconUpload from "bootstrap-icons/icons/upload.svg?raw";
 	import iconFileCheck from "bootstrap-icons/icons/file-check.svg?raw";
+	import iconStop from "bootstrap-icons/icons/stop.svg?raw";
 	import { _ } from "svelte-i18n";
 	import type { CallMethod } from "../../common/jsonRpc";
 	import type { EmitterAdminInfo, RpcServerInterface, ServerSentAdminInfo, ServerSentInfo } from "../../common/rpcInterface";
@@ -101,16 +102,21 @@
 			<div>
 				{#each emitter.emitterInfo.files as file}
 					{@const keyInFiles = `${emitter.emitterShortId}/${file.name}`}
-					{@const valueInFiles = files?.[keyInFiles]}
+					{@const serverFileInfo = files?.[keyInFiles]}
 					<div class="flex">
 						{@html iconFile}<span>{file.name} (<span title={$_("byte", { values: { size: file.size } })}>{formatSize(file.size, $_)}</span>)</span><button
 							class="flex"
-							on:click={() => socketApi("uploadFile", { emitterId, fileName: file.name, startByte: valueInFiles != null && valueInFiles < file.size ? valueInFiles : 0 })}>{@html iconUpload}</button
+							on:click={() => socketApi("uploadFile", { emitterId, fileName: file.name, startByte: serverFileInfo && serverFileInfo.size < file.size ? serverFileInfo.size : 0 })}
+							>{@html iconUpload}</button
 						><button class="flex" on:click={() => socketApi("removeFile", { emitterId, fileName: file.name })}>{@html iconDelete}</button>
-						{#if valueInFiles === file.size}
+						{#if serverFileInfo?.size === file.size && !serverFileInfo?.open}
 							{@html iconFileCheck}
-						{:else if valueInFiles != null}
-							<span title={$_("byte", { values: { size: valueInFiles } })}>{formatSize(valueInFiles, $_)}</span><progress value={valueInFiles} max={file.size}></progress>
+						{:else if serverFileInfo}
+							<span title={$_("byte", { values: { size: serverFileInfo.size } })}>{formatSize(serverFileInfo.size, $_)}</span>
+							{#if serverFileInfo.open}
+								<button class="flex" on:click={() => socketApi("stopUpload", { emitterId, fileName: file.name })}>{@html iconStop}</button>
+								<progress value={serverFileInfo.size} max={file.size}></progress>
+							{/if}
 						{/if}
 					</div>
 				{/each}
diff --git a/src/common/rpcInterface.ts b/src/common/rpcInterface.ts
index 1f36faa..e285651 100644
--- a/src/common/rpcInterface.ts
+++ b/src/common/rpcInterface.ts
@@ -34,11 +34,16 @@ export interface ServerSentReceiverInfo extends EmitterToReceiverInfo {
 	transformImage?: TransformImage;
 }
 
+export interface ServerFileInfo {
+	open: boolean;
+	size: number;
+}
+
 export interface ServerSentAdminInfo {
 	mode: "admin";
 	mediaConstraints?: MediaStreamConstraints;
 	emitters: { [emitterId: string]: EmitterAdminInfo };
-	files: Record<string, number>;
+	files: Record<string, ServerFileInfo>;
 }
 
 export type ClientSentInfo = ClientSentEmitterInfo | ClientSentReceiverInfo | undefined;
@@ -120,6 +125,7 @@ export interface RpcClientInterface {
 export interface RpcServerInterface {
 	iceCandidate?(arg: { candidate: RTCIceCandidateInit | null }): void;
 	uploadFile?(arg: { emitterId: string; fileName: string; startByte: number }): void;
+	stopUpload?(arg: { emitterId: string; fileName: string }): void;
 	removeFile?(arg: { emitterId: string; fileName: string }): void;
 	toggleRecording?(arg: { emitterId: string; action: "stop" | "start" | "newFile"; receiver?: boolean; emitter?: boolean }): void;
 	transformImage?(arg: { emitterId: string; transformImage: TransformImage | undefined }): void;
diff --git a/src/server/clientConnection.ts b/src/server/clientConnection.ts
index c84c10b..dcd5df6 100644
--- a/src/server/clientConnection.ts
+++ b/src/server/clientConnection.ts
@@ -323,6 +323,12 @@ export const createClientsManager = (
 						});
 					}
 				},
+				async stopUpload(arg) {
+					const emitter = emitterConnections.get(arg.emitterId);
+					if (emitter) {
+						uploadManager.stopUpload(`${emitter.shortId}/${arg.fileName}`);
+					}
+				},
 				async removeFile(arg) {
 					const emitter = emitterConnections.get(arg.emitterId);
 					if (emitter) {
diff --git a/src/server/uploadManager.ts b/src/server/uploadManager.ts
index e165270..f1c7290 100644
--- a/src/server/uploadManager.ts
+++ b/src/server/uploadManager.ts
@@ -7,16 +7,22 @@ import { createWriteStream } from "fs";
 import { pipeline } from "stream/promises";
 import { immerWritable } from "../common/immerWritable";
 import equal from "fast-deep-equal";
+import type { ServerFileInfo } from "../common/rpcInterface";
 
 export interface FileInfo {
 	emitterShortId: string;
 	fileName: string;
 	startByte: number;
+	fileKey: string;
+	id: string;
+	stream?: ReturnType<typeof createWriteStream>;
+	res?: ServerResponse;
 }
 
 export const createUploadManager = (config: Pick<ServerConfig, "recordPrefix" | "recordingsFolder">, configFilePath: string) => {
-	const receivedFiles$ = immerWritable({} as Record<string, number>, { equal });
+	const receivedFiles$ = immerWritable({} as Record<string, ServerFileInfo>, { equal });
 	const recordURLs = new Map<string, FileInfo>();
+	const openFiles = new Map<string, FileInfo>();
 	const recordPrefix = config.recordPrefix!;
 	const extractId = (url: string) => {
 		if (url.startsWith(recordPrefix)) {
@@ -25,20 +31,43 @@ export const createUploadManager = (config: Pick<ServerConfig, "recordPrefix" |
 		return undefined;
 	};
 
+	const stopUpload = (fileKey: string) => {
+		const existingOpenFile = openFiles.get(fileKey);
+		if (existingOpenFile) {
+			recordURLs.delete(existingOpenFile.id);
+			openFiles.delete(fileKey);
+			if (existingOpenFile.res) {
+				existingOpenFile.res.statusCode = 500;
+				existingOpenFile.res.end(JSON.stringify({}));
+			}
+			existingOpenFile.stream?.close();
+		}
+	};
+
 	const recordingsFolder = resolve(dirname(configFilePath), config.recordingsFolder!);
 
 	const handleRequest = async (fileInfo: FileInfo, req: IncomingMessage, res: ServerResponse) => {
 		try {
 			const fullFileName = join(recordingsFolder, fileInfo.emitterShortId, fileInfo.fileName);
 			await mkdir(dirname(fullFileName), { recursive: true });
+			if (openFiles.get(fileInfo.fileKey) !== fileInfo) return;
 			const stream = createWriteStream(fullFileName, { start: fileInfo.startByte, flags: fileInfo.startByte === 0 ? "w" : "r+" });
-			const update = () =>
+			fileInfo.stream = stream;
+			fileInfo.res = res;
+			const update = () => {
+				const newFile = openFiles.get(fileInfo.fileKey);
+				if (newFile?.stream && newFile !== fileInfo) return;
 				receivedFiles$.update((receivedFiles) => {
-					receivedFiles[`${fileInfo.emitterShortId}/${fileInfo.fileName}`] = fileInfo.startByte + stream.bytesWritten;
+					receivedFiles[fileInfo.fileKey] = {
+						size: fileInfo.startByte + stream.bytesWritten,
+						open: !stream.closed,
+					};
 					return receivedFiles;
 				});
-			update();
+			};
 			req.on("data", update);
+			stream.on("close", update);
+			update();
 			await pipeline(req, stream);
 			update();
 			res.statusCode = 200;
@@ -47,16 +76,25 @@ export const createUploadManager = (config: Pick<ServerConfig, "recordPrefix" |
 			console.log(error);
 			res.statusCode = 500;
 			res.end(JSON.stringify({}));
+		} finally {
+			if (openFiles.get(fileInfo.fileKey) === fileInfo) {
+				openFiles.delete(fileInfo.fileKey);
+			}
 		}
 	};
 
 	return {
 		receivedFiles$,
-		createUploadURL(info: FileInfo) {
+		createUploadURL(info: Pick<FileInfo, "emitterShortId" | "startByte" | "fileName">) {
+			const fileKey = `${info.emitterShortId}/${info.fileName}`;
+			stopUpload(fileKey);
 			const id = createId();
-			recordURLs.set(id, info);
+			const fileInfo = { ...info, id, stream: undefined, fileKey };
+			recordURLs.set(id, fileInfo);
+			openFiles.set(fileKey, fileInfo);
 			return `${recordPrefix}${id}`;
 		},
+		stopUpload,
 		handleRequest(req: IncomingMessage, res: ServerResponse) {
 			console.log(req.method, req.url);
 			if (req.method === "PUT") {