LU-3510 Adding duration support for webm

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@lumen5/framefusion",
-  "version": "1.0.6",
+  "version": "1.0.7",
   "type": "module",
   "scripts": {
     "docs": "typedoc framefusion.ts",

src/backends/beamcoder.ts

@@ -18,6 +18,13 @@ const VERBOSE = false;
  */
 const RGBA_PIXEL_SIZE = 4;
 
+// Convert a duration string in the format HH:MM:SS to seconds
+// Example: 00:01:30 -> 90
+function convertDurationToSeconds(duration) {
+    const [hours, minutes, seconds] = duration.split(':').map(parseFloat);
+    return hours * 3600 + minutes * 60 + seconds;
+}
+
 const createDecoder = ({
     demuxer,
     streamIndex,
@@ -242,7 +249,14 @@ export class BeamcoderExtractor extends BaseExtractor implements Extractor {
      * This is the duration of the first video stream in the file expressed in seconds.
      */
     get duration(): number {
-        return this.ptsToTime(this.#demuxer.streams[this.#streamIndex].duration);
+        const stream = this.#demuxer.streams[this.#streamIndex];
+        if (stream.duration !== null) {
+            return this.ptsToTime(stream.duration);
+        }
+        if (stream?.metadata?.DURATION) {
+            return convertDurationToSeconds(stream.metadata.DURATION);
+        }
+        return 0;
     }
 
     /**

test/framefusion.test.ts

@@ -60,7 +60,7 @@ describe('FrameFusion', () => {
         await extractor.dispose();
     });
 
-    it('can get duration', async() => {
+    it('can get duration from mp4', async() => {
         // Arrange
         const extractor = await BeamcoderExtractor.create({
             inputFileOrUrl: 'https://storage.googleapis.com/lumen5-prod-images/countTo60.mp4',
@@ -73,6 +73,19 @@ describe('FrameFusion', () => {
         await extractor.dispose();
     });
 
+    it.only('can get duration from webm', async() => {
+        // Arrange
+        const extractor = await BeamcoderExtractor.create({
+            inputFileOrUrl: 'https://storage.googleapis.com/lumen5-prod-video/anita-6uTzyZtNRKztypC.webm',
+        });
+
+        // Act and Assert
+        expect(extractor.duration).to.equal(115);
+
+        // Cleanup
+        await extractor.dispose();
+    });
+
     it('can get duration when audio stream is longer than video stream', async() => {
         // Arrange
         const extractor = await BeamcoderExtractor.create({