diff --git a/lib/db/snapshotSchedule.ts b/lib/db/snapshotSchedule.ts
index 1aa2d06..04bbe6e 100644
--- a/lib/db/snapshotSchedule.ts
+++ b/lib/db/snapshotSchedule.ts
@@ -207,7 +207,7 @@ export async function adjustSnapshotTime(
 	let initialOffset = 0;
 
 	if (lastAvailableWindow && lastAvailableWindow.count < allowedCounts) {
-		initialOffset = lastAvailableWindow.offset;
+		initialOffset = Math.max(lastAvailableWindow.offset - 2, 0);
 	}
 
 	let timePerIteration = 0;
diff --git a/lib/mq/exec/snapshotTick.ts b/lib/mq/exec/snapshotTick.ts
index 2a25265..e2c4ccf 100644
--- a/lib/mq/exec/snapshotTick.ts
+++ b/lib/mq/exec/snapshotTick.ts
@@ -160,6 +160,7 @@ export const regularSnapshotsWorker = async (_job: Job) => {
 	const startedAt = Date.now();
 	if (await lockManager.isLocked("dispatchRegularSnapshots")) {
 		logger.log("dispatchRegularSnapshots is already running", "mq");
+		client.release();
 		return;
 	}
 	await lockManager.acquireLock("dispatchRegularSnapshots", 30 * 60);
diff --git a/lib/net/bilibili.d.ts b/lib/net/bilibili.d.ts
index 6a66ecc..964a87e 100644
--- a/lib/net/bilibili.d.ts
+++ b/lib/net/bilibili.d.ts
@@ -9,6 +9,24 @@ export type VideoListResponse = BaseResponse<VideoListData>;
 export type VideoDetailsResponse = BaseResponse<VideoDetailsData>;
 export type VideoTagsResponse = BaseResponse<VideoTagsData>;
 export type VideoInfoResponse = BaseResponse<VideoInfoData>;
+export type MediaListInfoResponse = BaseResponse<MediaListInfoData>;
+
+type MediaListInfoData = MediaListInfoItem[];
+
+
+interface MediaListInfoItem {
+    bvid: string;
+	id: number;
+	cnt_info: {
+		coin: number;
+		collect: number;
+		danmaku: number;
+		play: number;
+		reply: number;
+		share: number;
+		thumb_up: number;
+	}
+}
 
 interface VideoInfoData {
 	bvid: string;