Add video.mjs

2025-04-11 20:51:13 +02:00 · 2025-04-11 20:51:13 +02:00 · 3d41bc9345
commit 3d41bc9345
1 changed files with 103 additions and 0 deletions
--- a/video.mjs
+++ b/video.mjs
@ -0,0 +1,103 @@
+import ffmpeg from 'fluent-ffmpeg';
+import sharp from 'sharp';
+import chalk from 'chalk';
+import { exec } from 'child_process';
+import fs from 'fs';
+
+const args = process.argv.slice(2);
+
+const videoPathIndex = args.indexOf('--path');
+if (videoPathIndex === -1 || !args[videoPathIndex + 1]) {
+    console.error('Please provide the video path using --path');
+    process.exit(1);
+}
+
+const fpsIndex = args.indexOf('--fps');
+const resolutionIndex = args.indexOf('--resolution');
+
+const videoPath = args[videoPathIndex + 1];
+const frameRate = fpsIndex !== -1 ? parseInt(args[fpsIndex + 1]) || 10 : 10;
+const resolutionSetting = resolutionIndex !== -1 ? args[resolutionIndex + 1] : 'current';
+
+console.log(`Made with <3 by Lisa Honkay (lisahonkay@gmail.com)`);
+console.log(`Processing video: ${videoPath}`);
+console.log(`Using FPS: ${frameRate}`);
+console.log(`Resolution: ${resolutionSetting}`);
+
+const resolutionFilter = resolutionSetting === 'current' ? 'scale=iw:ih' : `scale=${resolutionSetting}`;
+
+const framePathPattern = 'frames_%04d.png';
+ffmpeg(videoPath)
+    .outputOptions('-vf', `fps=${frameRate},${resolutionFilter}`)
+    .outputOptions('-q:v', '2')
+    .saveToFile(framePathPattern)
+    .on('end', () => {
+        console.log('All frames processed.');
+        processFrames();
+    });
+
+let frameQueue = [];
+
+function processFrames() {
+    exec(`ls ${framePathPattern.replace('%04d', '*')} | sort`, (error, stdout) => {
+        if (error) {
+            console.error('Error listing frames:', error);
+            return;
+        }
+        frameQueue = stdout.split('\n').filter(file => file);
+        console.log(`Loaded ${frameQueue.length} frames.`);
+        playFrames();
+    });
+}
+
+function playFrames() {
+    let index = 0;
+
+    function renderFrame() {
+        if (index >= frameQueue.length) {
+            console.log('Playback finished.');
+            return;
+        }
+
+        console.time('FrameRender');
+        sharp(frameQueue[index])
+            .toBuffer()
+            .then(imageBuffer => sharp(imageBuffer).raw().toBuffer({ resolveWithObject: true }))
+            .then(({ data, info }) => {
+                console.timeEnd('FrameRender');
+
+                const terminalWidth = process.stdout.columns || 80;
+                const terminalHeight = process.stdout.rows || 24;
+                const aspectRatio = info.width / info.height;
+                const targetWidth = Math.max(20, terminalWidth - 2);
+                const targetHeight = Math.min(Math.floor(targetWidth / aspectRatio), terminalHeight - 2);
+
+                let output = '';
+                for (let y = 0; y < targetHeight; y++) {
+                    for (let x = 0; x < targetWidth; x++) {
+                        const idx = (Math.floor(y * info.height / targetHeight) * info.width + Math.floor(x * info.width / targetWidth)) * 3;
+                        const r = data[idx];
+                        const g = data[idx + 1];
+                        const b = data[idx + 2];
+                        output += chalk.rgb(r, g, b)('█');
+                    }
+                    output += '\n';
+                }
+
+                process.stdout.cursorTo(0, 0);
+                process.stdout.write(output);
+
+                fs.unlink(frameQueue[index], err => {
+                    if (err) console.error('Error deleting frame:', err);
+                });
+
+                index++;
+                process.nextTick(renderFrame);
+            })
+            .catch(error => console.error('Error processing frame:', error));
+    }
+
+    setTimeout(renderFrame, 4000);
+}
+
+console.log('Extracting frames, this may take a moment...');