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Quality Control System for File-Based Media - Tektronix Cerify®

Supplier: TekMark Australia

Cerify tests file-based video and audio media for Correct Encoding Syntax, Correct Encoding Parameters, and Correct Baseband and Quality Levels.

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Quality control of file-based video ingested from different sources, encoded at different bit rates / formats and utilising different compression standards for SD /HD, VOD or IPTV delivery presents considerable challenges.

Cerify, the world's first fully automated system for verifying /checking file-based content prior to transmission or use, checks for:
  • Correct Encoding Syntax: At the digital level the audio and video must be correctly encoded without errors in accordance with the compression standard, so that it plays out correctly at the customer's STB /playout device.
  • Correct Encoding Parameters: The audio and video bit rates, GOP structure, video color-space, color depth, frame size, frame rate, aspect ratio, and quantization levels must be correct.
  • Correct Baseband and Quality Levels: The analog parameters of signal levels, luma, chroma, gamut, and quality levels of black frames, video quality (blockiness), loss of audio, audio clipping, and video and audio playtime.
Features & Benefits
  • Provides Exception-based Technical Compliance to Enable the QC Teams to Focus only on the Problem Content and the Subjective Requirements.
  • Performs Consistent and Thorough Checks of Incoming Video Files against User-defined Templates.
  • Integrates with Video Servers.
  • Logs Errors, Informs Automation Systems, plus Programmable Actions such as E-mail User Alert, Quarantine and Move Files.
  • XML-based Templates to Reduce Ingest Rejection due to Noncompliance.
  • Web-based Multiuser Interface.
  • Flexible Windows Software-only Solution.
  • All the Test Features of the Cerify 200 Market-leading Auto-QC Product.
  • CeriTalk API for Integration with Automation and Asset Management Systems.
Tests Include
  • Encoding Errors, Syntax Errors, Format, Bit Rate, Quantization, Frame Rate, GOP Length, Aspect Ratio, Color Format, Buffer Analysis, File Size, Correct PID, CableLabs VoD Compliance, Number of Video and Audio Streams, Number of Audio Channels.
  • Video Playtime, Signal Levels, Gamut, Luminance, Chrominance, Black Frame Detection, Video Quality (Blockiness), Freeze Frame Detection, Field Order.
  • Audio Playtime, Peak and Minimum Levels, Audio Loss, Clipping, Silence, Mute, Test Tones.
Formats
  • Format – All Frame Sizes, Bit Rates, and Resolutions for SD/HD and Mixed Workflows.
  • Container – MPEG TS/PS, MXF, GXF, MP4, QuickTime, ASF (Windows Media), 3GPP.
  • Video – MPEG-2 (IMX, XDCAM), H.264/AVC, MPEG-4, H.263, VC-1/WMV, DV/DVCPro25/50/100/HD, Apple ProRes 422/422(HQ)/422(Proxy)/422(LT)/444*1. 
  • Audio – MPEG-1/2, AAC, HE AAC, PCM (AES, BWF, AIFF, WAV), DV, WMA, Dolby D / AC-3, Dolby E.
Applications
  • Broadcasters – For checking audio and video after encoding, at ingest, after editing, after transcoding, and before playout for terrestrial, satellite, cable, internet, and video-on-demand content.
  • Archiving – For checking integrity before and after archiving.
  • Content Providers – For checking post production and aggregated content has been correctly encoded and conforms to the required quality and format.

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