Real-Time DVB-MHP Interactive Data Transcoding to Blu-Ray

Table 9

Test results of the interactive data transcoder.

		Stream 1	Stream 2	Stream 3
Stream		– Generated using available software	– Source: DVB-S network	– Source: from a DVB-T channel
		– Single program multiplex	– 19 program multiplex (10 audio only)	– Single program multiplex
Stream data rate (Mbps)		8	38	14
Interactive application data rate (Mbps)		3.09	0.244	7.12
Interactive application size (bytes)		41 498	194 253	1 545 513
Number of modules		2	21	37
Average time for building and transcoding a module (seconds)		0.007	0.054	0.068
Total transcoding time straightforward download	Carousel loops	1	1	2.02
	Seconds	0.0253	1.1754	3.1316
Total transcoding time cache-based download	Carousel loops	0.4920	0.8446	0.0203
	Seconds	0.0043	0.9692	1.0342
Time improvement by using cache	Carousel loops	0.508	0.1554	1.997
	Seconds	0.0210	0.2062	2.0974