TimeSave generates a ready-to-run ffmpeg command for DASH streams. Here is how to install ffmpeg and use it.
ffmpeg is a free, open-source command-line tool that can decode, encode, transcode, mux, demux, stream, filter, and play almost any audio or video format. It is widely regarded as the most capable multimedia processing tool in existence and is used by professionals and hobbyists worldwide. TimeSave uses a WebAssembly version (ffmpeg.wasm) for in-browser HLS conversion, and generates native ffmpeg commands for DASH streams that you run in your terminal for maximum speed and compatibility.
The easiest way is via Winget (built into Windows 11):
Alternatively, download a pre-built binary from ffmpeg.org/download.html, extract it, and add the bin folder to your system PATH.
Requires Homebrew (brew.sh). Install Homebrew first if you do not have it.
When TimeSave detects a DASH (.mpd) stream, the download page shows a Copy ffmpeg command button instead of an in-browser download. The generated command looks like this:
output.mp4 to a full path, e.g., C:\Users\YourName\Videos\video.mp4.DASH streams often separate the video and audio tracks into different streams and use fragmented MP4 containers. Merging these correctly inside a browser's sandboxed environment is complex and slow. Native ffmpeg on your computer handles this directly using optimised C code, making it significantly faster and more reliable for long or high-bitrate videos.