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Streams > Compliance Streams > Subtitles and Closed Captions Test Streams
   
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      DVB-Subtitles and Closed Captions Test Stream Suites  
 

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 * Requirements derived from DVB and ATSC broadcast standards
 * Specialized design to make testing easy and results unambiguous
 * HD DVB-Subtitles with DDS information
 * ATSC CEA 708 and 608 Closed Caption types
 * Test stream suite is modular and configurable for more flexibility in selection
 * Detailed and easy to refer documentation with all test stream suites
 
 

 

Standards Coverage Broadcast Standards

DVB-Subtitles:
ETSI EN 300 743




ATSC Closed Captions:
CEA/EIA 608
CEA/EIA 708
Document A/53 Part 4
 
 

DVB and ATSC broadcast standards have adopted different ways of subtitling. ATSC makes use of MPEG-2 video picture level user data syntax to send CEA 608 and 708 closed caption data. DVB has adopted a more graphical way with subtitle data sent as glyphs in a separate PID other than video.

Narlak Technologies provides test stream suites for both ATSC and DVB requirements.

 
   DVB-Subtitles test stream suite specification highlights  
   

# All test streams are compliant to v1.3.1 of ETSI EN 300 743 with DDS information
# Subtitle types for HD and SD monitor display aspect ratios
# Normal and Hearing impaired subtitle type tests streams
# With associated MPEG-2 SD and H.264 SD and HD video profiles and resolutions
# Live subtitle coding scenario with high datarate of subtitling.
# Test streams to measure subtitle timeouts unambiguously

 
  DVB-Subtitles Test Stream Suites delivery formats: MPEG-2 TS for DVB-T, DVB-T2, DVB-C andDVB-S  
  request for demo streams and more info...  
    ATSC Closed Captions test stream suite specification highlights  
   

# CEA 608 CC1, CC2, CC3 and CC4 data test streams
# CEA 708 test streams with closed caption data in services 1 to 6
# Test streams with character sets and different fonts
# Test streams with all applicable control codes from the character set
# Test streams with different styles of CC display like, pop-up, paint-on etc..
# Test streams with 708 and 608 CC data simultaneously present

 
  Closed Caption Test Stream Suites delivery formats: MPEG-2 TS for ATSC.  
  request for demo streams and more info...  
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