A Working Aspect Ratio & Resolution Reference (Including DCP)
Broadcast, streaming, and cinema all use different resolution conventions. A single searchable reference that includes DCP alongside everything else, rather than leaving cinema out.
Notes from the media supply chain
> Field notes on media processing, DCP mastering, VOD packaging, and the free tools we build along the way.
Recent Posts
Timecode Math Is Simple Until It Isn't
Timecode arithmetic looks trivial right up until frame rate and drop-frame notation get involved. A fast, frame-rate-aware converter and calculator for the moments it stops being trivial.
Cropping to Broadcast Spec Without Losing Quality
Once you know a frame has the wrong active picture area, the next problem is fixing it precisely, at the right output size, without dropping DPI metadata — and without opening Photoshop.
The Black Bar Problem Nobody Notices Until Delivery
Black borders and aspect ratio mismatches are the kind of fault that's invisible in a quick review and obvious the moment automated QC catches it. Here's how to catch it first.
What Your Captions Actually Look Like — Before Someone Else Finds Out
Reading a caption file tells you the words are right. It tells you nothing about how it renders. Here's how to preview TTML, WebVTT, SCC, and STL files properly before delivery.
Why Your SDH Subtitles Are Probably Getting Rejected
SDH files carry sound descriptions and speaker tags that plenty of delivery destinations don't want. Here's how to strip them cleanly, in bulk, without breaking timing.