Ad serving in CTV is the chain of systems that takes an ad request from a video player and returns a playable ad creative. The process involves VAST tags, CDN delivery, event beacon firing, and — on premium publishers — server-side ad insertion (SSAI) that stitches the ad into the content stream before it reaches the device. Understanding this chain matters for buyers diagnosing delivery problems and for publishers configuring their ad stack.
What is VAST? How the video ad serving standard works in CTV
VAST request sequence step by step, versions 2.0 through 4.x, error code diagnosis (303, 401, 402), and India CDN delivery guidance for under-5MB creatives.
VAST vs VPAID in CTV: why VPAID doesn't work on connected TV
Why VPAID fails silently on CTV native apps, how to spot error 405 in campaign reports, and why VAST 4.x with AdVerifications is the correct replacement.
What is SSAI? Server-side ad insertion explained for CTV
How SSAI stitches ads into the content stream server-side, why it outperforms CSAI on CTV beacon reliability and ad blocking resistance, and what it means for India buyers.
CTV ad pod management: how ad breaks are structured and sold
Pod structure, slot positions, pod bidding mechanics, and competitive separation enforcement — with a focus on how India CTV publishers manage ad breaks programmatically.
CTV creative specifications: video format, resolution, and delivery requirements
Technical specs table for India CTV publishers: MP4/H.264, 1080p, 2–5 Mbps bitrate, -24 LUFS audio, 15s/30s durations, and publisher pre-approval timelines for JioHotstar, SonyLIV, and Zee5.
SSAI vs CSAI in CTV: server-side vs client-side ad insertion compared
How manifest manipulation works in SSAI, why CSAI beacon failure rates reach 5–15% on CTV, ad blocking resistance comparison, and which India publishers use each approach.
VAST wrapper chains in CTV: what they are and how they cause delivery failures
How wrapper chains form across DSP, verification vendor, and creative CDN hops, why 4-hop chains regularly exceed India publisher timeouts, and how to fix wrapper-related null fills.
CTV ad serving latency: why timing matters and how it causes delivery failures
The 200ms RTB window, how India's DNS and CDN conditions consume the latency budget, SSAI prefetch as the solution, and how to diagnose latency-driven delivery gaps.
VAST error codes in CTV: what they mean and how to fix them
Complete VAST error code reference, the most common CTV errors (301 wrapper timeout, 303 no ads, 405 VPAID), India-specific error patterns during live events, and diagnosis steps.
Ad pod management in CTV: how publishers structure and fill ad breaks
Pod structure and slot types, competitive separation implementation, pod filling strategies (pod bidding vs sequential), and India CTV pod formats including sports break structures.
CTV ad serving in India explained: the full sequence from break to beacon
The 7-step CTV ad serving sequence, SSAI vs CSAI differences, VAST error codes, and the India CTV publisher ad waterfall explained.