cache imagesheet 1 min

also caption cache time changed from 6hr to 10min

imagesheet.js

@@ -32,7 +32,12 @@ async function createImageSheet(images /*[{width, height, url}]*/, legacyMode) {
 
 	await Promise.all(images.map(({x, y, w, h, url}) => (async function(){
 		if (!url) return;
+		try {
 			var image = await loadImage(url);
+		} catch (error) {
+			console.error("failed to load image", url, error.message);
+			return;
+		}
 		ctx.drawImage(image, x, y, w, h);
 	})().catch(error => console.error("imageload", error.stack))));
 
@@ -50,7 +55,7 @@ export async function makeImageSheetVrcUrl(pool, images, legacyMode) {
 	promise.then(() => {
 		setTimeout(() => {
 			if (store[key] === promise) delete store[key];
-		}, 1000*60*10); // 10 mins;
+		}, 1000*60); // 1 min;
 	});
 	promise.catch(error => {
 		console.error(error.stack);

youtube-captions.js

@@ -21,13 +21,16 @@ async function getVideoCaptions(videoId) {
 	captionTracks = await Promise.all(captionTracks.map(captionTrack => (async () => {
 		var xml = await gotw(captionTrack.baseUrl, {resolveBodyOnly: true});
 		var parsed = xmlParser.parse(xml);
+		if (!parsed.transcript || !parsed.transcript.text) {
+			console.error("caption missing lines", parsed, xml);
+		}
 		var lines = parsed.transcript.text.map(({ "#text": text, "@_start": start, "@_dur": dur }) => ({ start: Number(start), dur: Number(dur), text }));
 		return {
 			name: captionTrack.name.simpleText,
 			id: captionTrack.vssId,
 			lines
 		};
-	})().catch(error => console.error(error.stack))));
+	})().catch(error => console.error("getVideoCaptions", error.stack))));
 	return captionTracks;
 }
 
@@ -38,7 +41,7 @@ export async function getVideoCaptionsCached(videoId) {
 		cache[videoId] = getVideoCaptions(videoId);
 		setTimeout(() => {
 			delete cache[videoId];
-		}, 1000*60*60*6); // 6 hours
+		}, 1000*60*10); // 10 minutes
 	}
 	return await cache[videoId];
 }