Here are the specs:
Standard: 625/50
Aspect Ratio: 4:3 / 16:9 FHA (for certain stations only)
Chroma: YUV 4:2:2, RGB legal 100%
Audio Levels: Peak audio – 09 DBFS
VITC (if applicable): lines 19 and 21
File delivery
Format: MPEG2 422@ML
Bitrate: up to 50Mbp/s SD
Gop Structure: I Frame only
Audio: MP2 384kb/48kHz
Bars and Tone: 5’ EBU Bars
Pre Roll: 20’ (5’ EBU Bars and tone, 10’ Black, TVC, 5’ Black)
Post Roll: NO Freeze – 5 sec black only