feat(loop): add loop video tool to video tools list

src/pages/tools/video/loop/service.ts

@@ -0,0 +1,41 @@
+import { InitialValuesType } from './types';
+import { FFmpeg } from '@ffmpeg/ffmpeg';
+import { fetchFile } from '@ffmpeg/util';
+
+const ffmpeg = new FFmpeg();
+
+export async function loopVideo(
+  input: File,
+  options: InitialValuesType
+): Promise<File> {
+  if (!ffmpeg.loaded) {
+    await ffmpeg.load({
+      wasmURL:
+        'https://cdn.jsdelivr.net/npm/@ffmpeg/core@0.12.9/dist/esm/ffmpeg-core.wasm'
+    });
+  }
+
+  const inputName = 'input.mp4';
+  const outputName = 'output.mp4';
+  await ffmpeg.writeFile(inputName, await fetchFile(input));
+
+  const args = [];
+  const loopCount = options.loops - 1;
+
+  if (loopCount <= 0) {
+    return input;
+  }
+
+  args.push('-stream_loop', loopCount.toString());
+  args.push('-i', inputName);
+  args.push('-c:v', 'libx264', '-preset', 'ultrafast', outputName);
+
+  await ffmpeg.exec(args);
+
+  const loopedData = await ffmpeg.readFile(outputName);
+  return await new File(
+    [new Blob([loopedData], { type: 'video/mp4' })],
+    `${input.name.replace(/\.[^/.]+$/, '')}_looped.mp4`,
+    { type: 'video/mp4' }
+  );
+}