First release

src/videoProcessor.ts

@@ -0,0 +1,47 @@
+import ffmpeg from "fluent-ffmpeg";
+import fs from "fs";
+
+export interface FramesContainer {
+    frames: Buffer[];
+    fps: number;
+}
+
+export async function process(path: string, output: string): Promise<void> {
+    return new Promise((resolve, reject) => {
+        ffmpeg(path).ffprobe((err, data) => {
+            if (err) {
+                throw new Error("An error occurred: " + err.message);
+            }
+
+            if (!data.streams[0].r_frame_rate)
+                throw new Error("Unable to get video fps");
+
+            const videoData: FramesContainer = {
+                frames: [],
+                fps: parseFloat(data.streams[0].r_frame_rate),
+            };
+
+            const ffvideo = ffmpeg(path)
+                .outputOptions("-f image2pipe")
+                .outputOptions("-vf format=gray")
+                .on("error", (err) => {
+                    console.log("An error occurred: " + err.message);
+                });
+
+            const ffstream = ffvideo.pipe();
+            ffstream.on("data", (chunk) => {
+                videoData.frames.push(chunk);
+            });
+
+            ffstream.on("end", () => {
+                fs.writeFileSync(output, JSON.stringify(videoData));
+                console.log("Frames saved to", output);
+                resolve();
+            });
+        });
+    });
+}
+
+export default {
+    process
+};