Video saving and stream guides
How DASH / MPD video works
MPEG-DASH is a form of adaptive streaming. Its .mpd manifest describes available formats, segments and tracks. Unlike a direct MP4 link, the manifest alone is not a video you can play offline.
What an MPD manifest contains
The player reads the MPD and chooses suitable video and audio representations. Separate audio and video tracks are common in DASH and do not automatically indicate an error.
- An MPD describes media segments; it is not the finished file.
- The source controls quality variants and codecs.
- Some sites use DRM; Vidsavo does not bypass DRM-protected media.
Saving a compatible DASH video
- Open a video page whose owner permits downloading.
- Start playback and let Vidsavo detect the media.
- Select the available DASH/MPD stream and quality.
- Start the download and allow the segments to be assembled.
- Play the resulting file to check that the expected video and audio tracks are present.
Why a saved video may have no sound
DASH can expose audio as a separate adaptation set. If the extension detects only video, or the source uses an unsupported codec, the result may lack sound. Vidsavo combines compatible audio and video tracks without transcoding.
- Check whether the source plays with audio in your browser.
- Try another available quality variant.
- Read any extension message about a missing or unsupported audio track.
- Do not attempt to circumvent DRM restrictions.
DASH versus HLS
HLS commonly uses m3u8 playlists while DASH uses MPD manifests. Both can provide adaptive quality. What matters when saving content is that it is permitted, technically compatible and complete with the tracks you need.
Frequently asked questions
Can I rename .mpd to .mp4?
No. An MPD is a description of segments. A playable MP4 requires media segments to be downloaded and assembled.
Why are audio and video separate?
That is common in adaptive DASH streaming. Whether they can be merged depends on track compatibility.
Does Vidsavo support DRM?
No, it does not bypass DRM.
More guides
Vidsavo works with accessible media on compatible sites. It does not support YouTube downloads or bypass DRM. Results can vary with the source player, browser and your permissions.