Research Article

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

Table 9

Test results of the interactive data transcoder.

Stream 1Stream 2Stream 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)83814

Interactive application data rate (Mbps)3.090.2447.12

Interactive application size (bytes)41 498194 2531 545 513

Number of modules22137

Average time for building and transcoding a module (seconds) 0.0070.0540.068

Total transcoding time straightforward downloadCarousel loops112.02
Seconds0.02531.17543.1316

Total transcoding time cache-based downloadCarousel loops0.49200.84460.0203
Seconds0.00430.96921.0342

Time improvement by using cacheCarousel loops0.5080.15541.997
Seconds0.02100.20622.0974