Aspect ratio and broadcast loudness calculators - free, no login.
Scale dimensions keeping ratio, find missing width or height, identify 16:9 / 4:3 / 21:9 / 9:16, compute letterbox bars.
Compute the gain needed to hit EBU R128, ATSC A/85, or streaming loudness targets - with true-peak headroom warnings.
OTT Engine automates encoding, packaging, captions, ad insertion, and FAST-channel delivery across Roku, Fire TV, and Apple TV.