Video Technology Reference
Engineer-written guides to the video technology behind modern streaming—and the infrastructure behind Videospan: protocols, codecs, audio, and containers.
This library is a technical reference for engineers, video platform architects, and technical marketers who need to understand how modern video actually gets from a camera to a screen. It's also something more specific: an open record of the technology Videospan runs on. Each guide explains one building block of our platform—what it does, how it works under the hood, where it fits in a delivery pipeline, and when to choose it over the alternatives.
We document it openly because teams evaluating a video platform deserve to know exactly what they're buying. Whether you're assessing video infrastructure for an enterprise rollout, debugging a playback issue, or just making sense of the alphabet soup (HLS, DASH, CMAF, HEVC, fMP4), these guides are written to be accurate enough to build on and readable enough to finish. If this is how we explain video in public, it's how we think about it in the product.
How video is delivered over the web, from playlists to low-latency chunks.
How video is compressed and encoded for efficient storage and delivery.
How sound is compressed, streamed, and kept in sync with video.
How audio, video, and metadata are packaged into a single file.
How GPU encoders and cloud rendering deliver speed local machines can't.
Browser-based editing rendered server-side and versioned like code.
Streaming Protocols
Streaming protocols define how video is packaged, segmented, and delivered to players over HTTP. The three that matter today are HLS, Apple's protocol that reaches every device; MPEG-DASH, the vendor-neutral ISO standard; and CMAF, the segment format that unifies the two and enables low-latency delivery. Start with the streaming protocols overview if you're new to adaptive bitrate delivery.
Video Codecs
Codecs compress raw video into a fraction of its original size so it can be stored and streamed efficiently. This section covers H.264 (AVC), the universal baseline; HEVC (H.265), the efficiency upgrade with licensing trade-offs; and royalty-free alternatives AV1 and VP9. See the video codecs overview for how compression works in the first place.
Audio Codecs
Audio codecs do for sound what video codecs do for pictures—often with a bigger impact on perceived quality than people expect. We cover AAC, the default companion to H.264 and HLS, and Opus, the modern low-latency codec built for real-time communication. The audio codecs overview explains bitrate, sample rates, and channel layouts.
Container Formats
Containers are the file formats that wrap compressed audio, video, and metadata into a single deliverable unit. This section covers MP4, the industry standard for download and fragmented streaming, and WebM, the open format built around VP9 and AV1. The container formats overview clarifies the difference between a container and a codec—a distinction that trips up almost everyone at first.
Hardware Acceleration
Encoding is the most compute-hungry stage of any video pipeline, and where it runs determines how fast your team gets finished video. This section covers NVENC, the dedicated encoder silicon inside NVIDIA GPUs, and cloud GPU rendering—why datacenter GPUs deliver rendering speeds a fleet of laptops simply can't match. Start with the hardware acceleration overview.
Cloud Editing
Editing in Videospan happens in the browser, but the heavy lifting happens in our infrastructure: edits are stored as data, rendered as frames on serverless workers, encoded through our GPU pipeline, and versioned so every cut can be named, revisited, and rolled back. This section covers canvas-based editing, version control for video, and delivery renditions—CMAF streams for HLS and DASH plus ready-to-publish social formats. Start with the cloud editing overview.