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Aleksander Sekowski5d ago • 3 min read
A Live VAST URL Is Not a Paste. The Tester and the Inspector Do Different Jobs.
Paste XML checks the document you already have. A live tag URL is a fetch, a wrapper chain, and a di...
#vast#adtech#xml#video
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Aleksander Sekowski5d ago • 2 min read
The Wrapper You QA Is Not the Creative That Plays. The Inline Lives on Another Host.
A VAST wrapper can be spec-valid and still terminate on a different CDN, a different AdSystem, and a...
#vast#adtech#xml#ctv
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Aleksander SekowskiAug 22, 2026 • 4 min read
A Linear VAST Tag Can Ship an MP4 and Still Be Missing Duration
`<Duration>` is required inside every `<Linear>` creative. Trafficking pipelines that infer length f...
#vast#xml#adtech#ctv
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Aleksander Sekowski6d ago • 4 min read
VAST 4.1 Dropped UniversalAdId's idValue Attribute. The ID Has to Live in the Text.
VAST 4.0 put the creative identifier on UniversalAdId's idValue attribute. VAST 4.1 moved it to elem...
#vast#xml#adtech#ctv
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Deepak Kumar3d ago • 6 min read
How to Convert JSON to CSV, XML, and YAML (With Examples)
JSON is the universal interchange format, but that doesn't mean every tool that needs your data...
#json#csv#xml#yaml
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