A familiar situation: the Vimeo clip downloads, the file opens, the picture plays — and there is no sound. It is not the codec and not your player. It is how Vimeo delivers video in the first place.
What is actually going on
Vimeo uses DASH, an adaptive streaming format. Instead of one finished file, the server serves a manifest listing the available tracks: several video renditions at different qualities, and audio separately. The browser player picks a video rendition that matches your connection, pulls the audio track alongside it, and syncs the two during playback.
That is great for streaming — when your bandwidth drops the player quietly steps down a rendition without interrupting playback. But it means there is no single file sitting on the server. It is assembled in your browser as you watch.
So any tool that simply grabs the first media stream it finds on the page walks away with one track out of two. Usually the video one. Hence the silent file.
Why the usual approaches fail
- Right click → "Save video as" — a DASH player either has no such option, or it saves a single segment.
- Converter sites — many take only the video track, because merging costs them processing time and money.
- Extensions without DASH support — they see the stream, download it whole, and stop there.
What it takes to get sound
There is exactly one correct sequence: download both tracks and merge them into a single MP4 container. Tentek Video Downloader does this for you — it finds the manifest on the page, fetches the video rendition you picked along with the audio track, merges them, and hands you the finished file.
- 1Open the clip on vimeo.com and start playback, so the extension can see the manifest.
- 2Click the Tentek icon in your browser toolbar.
- 3Pick the entry marked DASH — that is the merged video-plus-audio option.
- 4Wait for it to finish: merging takes longer than a plain download, because the file is assembled locally.
The honest limitations
- Merging happens on your computer, so a long 4K clip takes noticeably longer than a short 720p one.
- On the free tier the rate of DASH downloads is limited — you will not batch through a dozen clips back to back.
- Private and password-protected clips only work if you already have access in your browser. The extension does not bypass Vimeo restrictions; it works with what is open to you.
- Maximum quality is capped by the source. If the author uploaded 720p, there is no 4K to be had.
How to check the file actually has audio
Open the file properties: a correct result has two tracks, video and audio. If the audio track is missing, only half of the pair came down — repeat the download and pick the DASH entry rather than a standalone video stream.