A Survey of Standardized Approaches towards the Quality of Experience Evaluation for Video Services: An ITU Perspective

Table 8

Guidelines to choose a proper subjective approach.

Parameter	Technique
	ACR	ACR-HR	DCR	PC	SSCQE	DSIS	DSCQS	SDSCE	SCACJ
Stimulus type	Single	Single	Double	Comparison	Single	Double	Double	Double	Comparison
Video duration	10 s	10 s	10 s	-	5 m	10 s	10 s	5 m	-
Explicit video reference	No	No	Yes	No	No	Yes	No	Yes	No
Hidden video reference	No	Yes	No	No	No	No	Yes	No	No
Video repetition	Yes	Yes	Yes	Yes	No	Yes	Yes	No	Yes
Quality evaluation scale	Table 4	Table 4	Table 5	-	Table 6	Table 5	Table 6	Table 6	Table 7