All three formats can deliver video successfully, but they solve different problems. MP4 is the simplest because it is just a file. HLS and DASH are adaptive streaming protocols that rely on manifests and segment delivery. That extra flexibility comes with more moving parts and more debugging surfaces.
Quick comparison
| Format | Strength | Main cost |
|---|---|---|
| HLS | Broad ecosystem support and adaptive playback | Playlist, segment, and CORS complexity |
| DASH | Standards-based adaptive delivery | Player support and packaging variation |
| MP4 | Simple progressive playback | No adaptive bitrate ladder by default |
When HLS is a strong choice
Use HLS when you need adaptive bitrate streaming and broad delivery tooling. For browser work, HLS is a practical default because the packaging and player ecosystem are mature. It is especially common when teams want one protocol that can serve web and device playback at scale.
When DASH fits better
DASH is useful when your pipeline already targets MPEG-DASH or when you want a standards-oriented adaptive workflow. In the browser, DASH often works well with JavaScript players, but the operational experience depends more heavily on how the manifests and segment profiles were packaged.
When MP4 is enough
MP4 is often the right answer for simple previews, downloads, short clips, and low-complexity embeds. If you do not need adaptive switching or segmented live delivery, MP4 removes an entire class of playlist-related failure points.
Choose based on debugging cost too
One overlooked factor is operational complexity. If your team is still learning browser delivery, MP4 reduces variables. HLS and DASH are powerful, but each adds manifests, segment paths, cache behavior, and cross-origin policy to the debugging surface. The right protocol is not only the one that can work, but the one you can support confidently.