| 
 Recommendation BT.1122 
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| 
 Approved in 2019-01 
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| 
 Managed by R00-SG06 
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| Main | 
 
Number
  | 
Title | 
Status | 
Questions | 
 
BT.1122-3 (01/2019)     | 
User requirements for codecs for emission and secondary distribution systems for SDTV, HDTV, UHDTV and HDR-TV
		 
 | 
In force (Main)
  | 
N/A
   		  | 
 
     | 
 
| Previous versions  | 
 
Number
  | 
Title | 
Status | 
Questions | 
 
BT.1122-0 (07/94)     | 
User requirements for emission and secondary distribution systems for SDTV, HDTV and hierarchical coding schemes
		 
 | 
Superseded 
  | 
N/A
   		  | 
 
BT.1122-1 (10/95)     | 
User requirements for emission and secondary distribution systems for SDTV, HDTV and hierarchical coding schemes
		 
 | 
Superseded 
  | 
N/A
   		  | 
 
BT.1122-2 (03/2011)     | 
User requirements for codecs for emission and secondary distribution systems for SDTV and HDTV
		 
 | 
Superseded 
  | 
N/A
   		  | 
 
 
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