YouTube Streaming Glossary
Essential terms every YouTube creator and streamer should know. From CPM to encoding, this glossary covers monetization, streaming technology, and analytics terminology.
Monetization
CPM
Cost Per Mille (thousand). The amount advertisers pay per 1,000 ad impressions on your video. YouTube CPM varies from $0.50 to $30+ depending on niche, audience location, and advertiser demand. You don't receive the full CPM - see RPM.
RPM
Revenue Per Mille. The actual amount you earn per 1,000 views after YouTube's 45% cut. RPM = CPM × 0.55 (approximately). This is the number that matters for your earnings.
Ad Revenue
Income generated from advertisements shown on your videos. YouTube places ads and shares 55% of the revenue with creators. Ad types include pre-roll, mid-roll, post-roll, and display ads.
YouTube Partner Program (YPP)
YouTube's monetization program that allows creators to earn money from ads, memberships, and Super Chats. Requirements: 1,000 subscribers and either 4,000 watch hours (long-form) or 10M Shorts views in the past 12 months.
Super Chat
Paid messages viewers send during live streams to get highlighted in chat. Amounts range from $1 to $500. YouTube takes 30%, you keep 70%. Popular on 24/7 streams where viewers want to stand out.
Channel Memberships
Monthly subscriptions viewers pay ($0.99-$99.99) for perks like badges, emojis, and exclusive content. YouTube takes 30%. Memberships provide stable recurring income independent of view counts.
Mid-Roll Ads
Ads that play during videos (not just at start or end). Available on videos 8+ minutes long. More mid-roll ads = more revenue, but too many hurts viewer experience. 24/7 streams can have mid-rolls every 8-10 minutes.
Twitch Affiliate
Twitch's entry monetization tier, and the bar is lower than most guides say: 25 followers, 4 hours streamed, 4 different streaming days and an average of 3 concurrent viewers, all within the same 30-day window, plus two-factor authentication. It unlocks subscriptions, Bits, ad revenue, channel points and 14-day VOD storage.
Streaming
24/7 Streaming
Continuous live streaming that runs nonstop. Popular for music, ambient sounds, and compilation content. Available to viewers across all time zones.
Live Streaming
Broadcasting video content in real-time to viewers. YouTube Live allows unlimited stream duration, making it ideal for 24/7 broadcasting. Live streams can be monetized with ads, Super Chats, and memberships.
Bitrate
The amount of data transmitted per second in your stream, measured in Kbps (kilobits per second). Higher bitrate = better quality but requires more bandwidth. YouTube recommends 4,500-9,000 Kbps for 1080p.
Stream Key
A unique code that connects your streaming software to your YouTube channel. Keep it secret - anyone with your stream key can broadcast to your channel. Found in YouTube Studio under Live > Stream.
RTMP
Real-Time Messaging Protocol. The standard protocol for streaming video to YouTube and other platforms — runs over TCP port 1935 and was originally specified by Adobe in 2012. Your streaming software sends video via RTMP to YouTube's ingest URL (rtmp://a.rtmp.youtube.com/live2). See our RTMP ingest URL deep-dive for the URL anatomy, encoder settings, and OBS setup.
Encoding
The process of converting raw video into a compressed format for streaming. Common encoders include x264 (CPU) and NVENC (NVIDIA GPU). Good encoding balances quality and file size for smooth streaming.
Resolution
The dimensions of your video in pixels (width × height). Common resolutions: 720p (1280×720), 1080p (1920×1080), 1440p (2560×1440), 4K (3840×2160). Higher resolution requires more bitrate.
Frame Rate (FPS)
Frames Per Second - how many images display per second. 30fps is standard for most content. 60fps is smoother for gaming/action. Higher FPS requires more bitrate and processing power.
Loop
Content that loops smoothly, creating continuous playback. 24/7 streams rely on looped video/audio. Good loops are imperceptible - viewers shouldn't notice the restart point.
OBS
Free, open-source streaming software. OBS captures video, adds overlays, encodes, and sends to YouTube. Powerful but requires technical setup. Needs a computer running 24/7 for continuous streaming.
Playlist
An ordered collection of videos that play sequentially. For 24/7 streaming, playlists determine the content loop order and total stream duration. Longer playlists mean less repetition for viewers.
Overlay
Visual elements layered on top of your stream video, such as logos, chat widgets, alerts, and now-playing displays. Overlays add branding and interactivity to your 24/7 stream.
Multistreaming
Sending one live broadcast to several platforms at the same time - YouTube, Twitch and Kick from a single encode, for example. Done in the cloud the video leaves your connection once and is copied to each destination, so your upload does not multiply; done locally in OBS it does.
Simulcasting
The same thing as multistreaming, and the word the platforms use in their own rules. Twitch's Simulcasting Guidelines apply to every streamer without an exclusivity agreement, on two conditions: the Twitch broadcast must not be the degraded one, and you must not use Twitch to push viewers towards a concurrent stream elsewhere.
Destination
One place a broadcast is delivered to: an ingest URL plus a stream key. A multistreamed broadcast has several, and plans normally cap how many may run at once.
TikTok LIVE
TikTok's live mode. Streaming into it from anything other than the app needs LIVE access, and TikTok issues the RTMP address per streamer rather than publishing one - so both the URL and the key have to be copied out of its interface. The follower threshold is widely quoted as 1,000, but TikTok does not publish it on a page we could verify.
Analytics
Watch Hours
Total hours viewers spend watching your content. YouTube requires 4,000 public watch hours in 12 months for monetization. 24/7 streams with 10 concurrent viewers generate ~7,200 watch hours/month.
Watch Time
The total amount of time viewers spend watching your videos. A key metric on YouTube. Live streams accumulate watch time continuously since they're always available.
Concurrent Viewers
The number of people watching your stream at the same moment. A key metric for live stream health that indicates how many viewers are tuned in at any given time.
Retention
The percentage of your video viewers watch. 50% retention on a 10-minute video means average watch time is 5 minutes. Higher retention = YouTube promotes your content more.
Click-Through Rate (CTR)
Percentage of people who click your video after seeing the thumbnail. Average CTR is 2-10%. Higher CTR means your title/thumbnail are compelling. YouTube promotes high-CTR content.
Impressions
How many times your video thumbnail was shown to potential viewers. More impressions = more opportunity for clicks. YouTube shows videos with high CTR to more people.
Engagement Rate
The percentage of viewers who interact with your content (likes + comments + shares divided by views). A rate above 4% is considered good on YouTube. Higher engagement signals the algorithm to recommend your content more.
Subscriber
A YouTube user who follows your channel. You need 1,000 subscribers plus 4,000 watch hours (or 10M Shorts views) to join the YouTube Partner Program and start earning ad revenue.
SEO
Search Engine Optimization. The practice of optimizing titles, descriptions, tags, and thumbnails to rank higher in YouTube and Google search results. Good SEO helps your 24/7 stream get discovered by new viewers.
Technical
Thumbnail
The preview image that represents your video/stream. Custom thumbnails significantly impact CTR. For streams, use consistent branding so viewers recognize your content.
Algorithm
YouTube's recommendation system that decides which videos to suggest to viewers. Factors include watch time, CTR, engagement, and viewer history.
Monetization Threshold
Requirements to join YouTube Partner Program: 1,000 subscribers AND 4,000 watch hours (or 10M Shorts views) in past 12 months. 24/7 streaming is the fastest way to reach watch hour requirements.
Copyright Strike
A penalty from YouTube when you use copyrighted content without permission. Three strikes = channel termination. Use royalty-free music and original content to avoid strikes.
Content ID
YouTube's automated system that identifies copyrighted content. Results in claims (revenue goes to copyright holder) or blocks. Avoid by using licensed or original content.
Royalty-Free
Content (music, images, video) you can use without paying per-use royalties. Often requires one-time license purchase. Sources: Epidemic Sound, Artlist, Freesound.org.
Codec
Software that compresses and decompresses video files (e.g., H.264, H.265, VP9, AV1). Choosing the right codec affects file size, quality, and streaming compatibility. H.264 is the most widely supported for YouTube.
Bandwidth
The maximum data transfer rate of your internet connection, measured in Mbps. Upload bandwidth determines the maximum bitrate you can stream at. For 1080p streaming, you need at least 10 Mbps upload speed.
Ingest Server
The platform's entry point that accepts your RTMP connection. Some publish one address for everybody - YouTube's rtmp://a.rtmp.youtube.com/live2, Twitch's rtmp://live.twitch.tv/app - while others issue a different one to every streamer, which is why you have to copy the address and the key together.
RTMPS
RTMP wrapped in TLS, usually on port 443. Facebook requires it and most other platforms accept it. Same protocol, encrypted transport - and it passes through networks that block port 1935.
Fan-out
Taking one encoded stream and writing it to several destinations at once. The video is encoded a single time and the packets are copied, so each extra platform costs a little muxing and bandwidth rather than another encode - which is why cloud multistreaming scales better than running several encoders.
Transcoding
Decoding a stream and re-encoding it at a different bitrate, resolution or codec. Platforms transcode your broadcast into the quality ladder viewers choose from - though on several of them small channels get only the original quality until the stream grows.
Dropped Frames
Frames the encoder produced but the network could not deliver, so they were thrown away. Usually the bitrate is too high for the connection, or the route to that particular ingest server is congested - which is why one destination can drop frames while the others are clean.
Keyframe Interval
How often the encoder emits a full frame that the following frames are built from. Live platforms want them frequent and regular - YouTube recommends one every 2 seconds and caps the interval at 4 - because a viewer joining a stream can only start at a keyframe.
Backup Ingest
A second ingest address a platform publishes so an encoder can reconnect elsewhere when the primary one refuses it. Not the same as multistreaming: it is one destination with a spare door, not several destinations.
Amazon IVS
Amazon Interactive Video Service, the managed streaming backend Kick runs on. It gives every streamer their own contribute host: AWS's own example is rtmps://a1b2c3d4e5f6.global-contribute.live-video.net:443/app with a key like sk_us-west-2_abcd1234 - the id and the region change per account, the /app path never does. It accepts H.264 video and AAC-LC audio only, which is where Kick's codec restriction comes from.
Content
ASMR
Autonomous Sensory Meridian Response. A tingling sensation triggered by specific audio-visual stimuli like whispers, tapping, or soft sounds. ASMR content is one of the most popular niches for 24/7 streaming on YouTube.
Lo-Fi
Low-fidelity music characterized by intentional imperfections like vinyl crackle, tape hiss, and mellow beats. Lo-fi hip hop and chill music streams are among the most successful 24/7 channels on YouTube.
Niche
A specific content category or topic that targets a defined audience. Popular 24/7 streaming niches include lo-fi music, ASMR, ambient sounds, gaming highlights, and study-with-me. Choosing the right niche is critical for channel growth.
Fair Use
A legal doctrine that permits limited use of copyrighted material without permission for purposes such as commentary, criticism, or education. Fair use is a defense, not a right — relying on it for 24/7 streaming is risky.
Creative Commons
A set of free licenses that allow creators to share their work with specific permissions. CC0 means public domain (safest). CC BY requires attribution. Always check the specific license terms before using in your stream.