Commit 96d1df3c authored by Guillaume Desmottes's avatar Guillaume Desmottes 🐐

tests: enforce I420 format

Tests are assuming video is I420 with a specific chroma and colorimetry
but were not actually enforcing it.
Fixes needed as I420 will no longer be the first video format, see
gst-plugins-base!689

Part-of: <!184>
parent 10568c30
Pipeline #157785 waiting for manual action with stages
in 17 seconds