diff --git a/src/components/HTMLEngineProvider/HTMLRenderers/VideoRenderer.tsx b/src/components/HTMLEngineProvider/HTMLRenderers/VideoRenderer.tsx
index 6802a4518ba1..095dcb294857 100644
--- a/src/components/HTMLEngineProvider/HTMLRenderers/VideoRenderer.tsx
+++ b/src/components/HTMLEngineProvider/HTMLRenderers/VideoRenderer.tsx
@@ -18,7 +18,7 @@ function VideoRenderer({tnode, key}: VideoRendererProps) {
     const attrHref = htmlAttribs.href || htmlAttribs[CONST.ATTACHMENT_SOURCE_ATTRIBUTE] || '';
     const sourceURL = tryResolveUrlFromApiRoot(attrHref);
     const fileName = FileUtils.getFileName(`${sourceURL}`);
-    const thumbnailUrl = htmlAttribs[CONST.ATTACHMENT_THUMBNAIL_URL_ATTRIBUTE];
+    const thumbnailUrl = tryResolveUrlFromApiRoot(htmlAttribs[CONST.ATTACHMENT_THUMBNAIL_URL_ATTRIBUTE]);
     const width = Number(htmlAttribs[CONST.ATTACHMENT_THUMBNAIL_WIDTH_ATTRIBUTE]);
     const height = Number(htmlAttribs[CONST.ATTACHMENT_THUMBNAIL_HEIGHT_ATTRIBUTE]);
     const duration = Number(htmlAttribs[CONST.ATTACHMENT_DURATION_ATTRIBUTE]);