Context: These first European HDTV broadcasts used the 1080i format with MPEG-2 compression on a DVB-S signal from SES's Astra 1H satellite. Euro1080 transmissions later changed to MPEG-4/AVC compression on a DVB-S2 signal in line with subsequent broadcast channels in Europe.

Question: What format did the first European HDTV broadcast use?
Answer: 1080i format

Question: What compression did the first European HDTV broadcast use?
Answer: MPEG-2

Question: What signal did the first European HDTV broadcast use?
Answer: DVB-S

Question: What compression did Euro1080 later change to?
Answer: MPEG-4/AVC

Question: What signal did Euro1080 later change to?
Answer: DVB-S2

Question: What format did the first European SDTV broadcast use?
Answer: Unanswerable

Question:  What compression did the first Asian HDTV broadcast use?
Answer: Unanswerable

Question:  What signal did the first European SDTV broadcast use?
Answer: Unanswerable

Question:  What compression did Euro1180 later change to?
Answer: Unanswerable