STREAMING GLOSSARY
Streaming, explained
Short, evergreen answers to the streaming questions that actually come up · formats, subscriptions, regions, and the basics that the services themselves don’t explain well.
Streaming basics
What streaming is, how it works, and why your stream sometimes pauses.
- What Is Streaming?Streaming is watching video over the internet in real time · your device receives data continuously and plays it as it arrives, without saving the full file to disk.
- What Is Buffering and How Do You Stop It?Buffering is the streaming player pausing playback to download enough video data ahead of where you're watching so it can play continuously. When your connection can't keep up, the buffer empties and the stream stalls.
Video & audio quality
HDR, Dolby Atmos, bitrate, codec · the formats that decide what your stream actually looks and sounds like.
- What Is HDR in Streaming?HDR (High Dynamic Range) is a video format that shows a wider range of brightness and color than standard video · brighter highlights, deeper shadows, and more vivid color in between.
- What Is Dolby Atmos?Dolby Atmos is an audio format that adds overhead and three-dimensional positioning to surround sound · instead of just left/right/center channels, individual sounds can be placed anywhere in the room, including above you.
- What Is Bitrate in Streaming?Bitrate is the amount of data the stream uses per second, measured in megabits per second (Mbps). Higher bitrate generally means a sharper, more detailed image at the same resolution.
Subscriptions & access
Ad-supported tiers, free trials (or the lack of them), account sharing, channel add-ons.
- Are Free Trials Still a Thing in Streaming?Most major streaming services no longer offer standalone free trials. The modern equivalent is the cancel-anytime monthly subscription · sign up for one month, watch what you want, and cancel before the next bill.
- What Is Ad-Supported Streaming?An ad-supported streaming tier costs less per month than the ad-free tier and inserts a few short commercial breaks into each title. Every major service except Apple TV+ now offers one.
- Can I Share Streaming Accounts in 2026?Most major services now technically restrict account sharing to a single household, but enforcement varies widely. Some offer paid "extra member" add-ons for friends or family outside your household.
- What Are Streaming Channel Add-Ons?A channel add-on lets you subscribe to a separate streaming service through a host platform · pay extra inside Amazon Prime Video or Apple TV to watch HBO Max, Paramount+, AMC+, etc. You see those titles inside the host app rather than installing a separate one.
Regions & access
Why catalogues differ by country and what the legal options are when a title isn't in your region.
Which of these actually matters
Most streaming jargon is marketing. A few terms genuinely change what you see and what you pay, and they cluster around three moments. When a stream looks bad, the useful vocabulary is bitrate and HDR · the resolution number on the box is the least informative figure in the chain, and a 4K stream starved of bandwidth looks worse than a well-encoded 1080p one. When you're comparing plans, it's ad-supported tiers and channel add-ons, because the cheap tier is sometimes a smaller catalogue rather than the same catalogue with ads. When a title won't play at all, it's region locking, which is a licensing decision rather than a fault at your end.
None of it is required reading. The Discover filters and the per-title availability panels work identically whether or not you know what a codec is · these entries exist for the specific evening you're trying to work out why the same show looks different on two devices, or whether the cheaper plan is actually the same product. Each one is written to be read once and closed. If you're weighing up two services rather than two tiers, the full comparison covers price, catalogue size, and quality caps side by side.