diff --git a/src/models/attachmentManager.ts b/src/models/attachmentManager.ts
index ca427a0..dcd8658 100644
--- a/src/models/attachmentManager.ts
+++ b/src/models/attachmentManager.ts
@@ -150,6 +150,7 @@ export class AttachmentManager {
             canvas.width = 640;
             canvas.height = 480;
             let video: HTMLVideoElement = document.createElement("video");
+            video.preload = "auto";
             video.addEventListener("loadedmetadata", function () {
               if (video.videoWidth > THUMBNAIL_MAX_WIDTH || video.videoHeight > THUMBNAIL_MAX_HEIGHT) {
                 var aspect = video.videoWidth / video.videoHeight;
@@ -183,6 +184,7 @@ export class AttachmentManager {
             });
             video.src = url;
             video.currentTime = 0.1;
+            video.load();
           } catch (error) {
             console.error("Failed to get video thumbnail: " + error);
             resolve(undefined);