configurable limit also up it

index.ts

@@ -60,6 +60,7 @@ async function processSnapshots(
   videos: VideoInfo[],
   snapshotsDir: string,
   count: number,
+  sizeLimit: number,
 ) {
   const totalDuration = videos.reduce((acc, video) => acc + video.duration, 0);
   const currentHour = new Date().getHours();
@@ -91,7 +92,7 @@ async function processSnapshots(
 
       const stats = await stat(snapshotPath);
       size = stats.size;
-      if (size < 5 * 1024) {
+      if (size < sizeLimit) {
         logger.info(
           `Snapshot ${
             i + 1
@@ -108,6 +109,7 @@ async function setupSnapshotServer(
   videoPaths: string[],
   snapshotsDir: string,
   count: number,
+  sizeLimit: number,
 ) {
   const app = express();
 
@@ -116,10 +118,10 @@ async function setupSnapshotServer(
     const videos = await getVideoInfo(videoPaths);
 
     // noinspection ES6MissingAwait
-    processSnapshots(videos, snapshotsDir, count);
+    processSnapshots(videos, snapshotsDir, count, sizeLimit);
 
     schedule.scheduleJob("0 * * * *", () =>
-      processSnapshots(videos, snapshotsDir, count),
+      processSnapshots(videos, snapshotsDir, count, sizeLimit),
     );
 
     app.get("/:magic?", async (req, res) => {
@@ -136,11 +138,10 @@ async function setupSnapshotServer(
         if (magic) {
           const hash = createHash("md5").update(magic).digest("hex");
           const index = parseInt(hash.substring(0, 8), 16) % files.length;
-          // Cache until the next hour rolls over
           res.sendFile(files[index], {
             headers: {
               "Cache-Control": `public, max-age=${
-                3600 - new Date().getMinutes() * 60
+                3600 - new Date().getMinutes() * 60 - new Date().getSeconds()
               }`,
             },
             root: currentDir,
@@ -172,11 +173,13 @@ program
   .argument("<paths...>", "Video file paths")
   .option("-d, --directory <dir>", "Directory to store snapshots", "snapshots")
   .option("-c, --count <count>", "Number of snapshots to take per hour", "32")
+  .option("--size-limit <size>", "Size limit for snapshots in KiB", "7")
   .action(async (videoPaths: string[], options) => {
     await setupSnapshotServer(
       videoPaths,
       options.directory,
       parseInt(options.count, 10),
+      parseInt(options.sizeLimit, 10) * 1024,
     );
   });