AVOD splits into two real technical approaches, SSAI and CSAI, that behave very differently. Here's what actually separates all four models, not just pricing.

AIOZ's is_default flag is global, not per-viewer. The real fix is letting the browser's own language matching do the work it was already built to do.

VOD means processed once, played millions of times. Here's how seeking actually works at the keyframe level, and why that model caches so efficiently.

Both APIs use identical VTT files and endpoint shapes, but only transcripts support a default-language update. Neither one generates text for you.

A Master Playlist lists rungs, a Media Playlist lists segments. Here's the real tag-by-tag mechanics, not the same chunking already covered for uploads.

AIOZ's Audio API stores, transcodes, and streams audio well. It has no RSS feed generation, the actual mechanism Apple Podcasts and Spotify require.

Three codecs solve the same problem. Which one wins in practice depends on patent licensing and hardware decode support as much as compression efficiency.

Resolution and codec live inside a qualities array. H.264 caps at 4K on AIOZ Stream, so an 8K output needs H.265, and the compute cost isn't small.

AWS states an exact 11-nines durability figure. Decentralized networks prove durability differently, and don't all use one method. Here's how each actually works.

AIOZ Stream splits uploads into 50-200MB parts across three API calls. Here's the raw chunking loop, and what the docs don't say about resuming a failed one.

A fixed ladder wastes bits on simple content and starves complex content. Here's how per-title and per-shot encoding actually build a better one, with real numbers.

ABR switching uses real algorithm families, throughput-based, buffer-based, and BOLA, not one universal method. Here's how AIOZ Stream's own bitrate ladder fits in.