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We generate the test streams for YOUR decoders
Overview
H.264/MPEG-4 AVC is a new high efficiency video coding standard that has been chosen as a base technology for a variety
of applications like mobile multimedia (3GPP, DMB, DVB-H,), SD and HD TV broadcast (DVB-S2) or home cinema (HD-DVD, Blu-ray Disc)
For survival in the fast growing market of H.264/AVC decoder products it is crucial to develop stable and correct
implementations of this complex technology. Such high quality products require intense testing regarding all features
of the video coding standard.
Fraunhofer HHI offers different sets of test bitstreams which can be used for testing H.264/AVC decoder chips or Set
Top Boxes. For covering all different aspects of decoder testing, these streams are provided in the following categories:
- low level syntax test bitstreams
- high level syntax test bitstreams
- stress test bitstreams
- typical broadcast bitstreams
- pathological test bitstreams for testing error resilience / error concealment
Testing Methods
H.264/MPEG-4 AVC specifies the complete decoding process with precise pixel values. So the output of a decoder under test
can be directly compared with the output of a known correct reference decoder. For that purpose Fraunhofer HHI provides an
independent decoder implementation that has been cross verified with the official JVT reference software. Automation of
these tests is possible.
H.264/MPEG-4 AVC specifies the complete decoding process with precise pixel values. So the output of a decoder under
test can be directly compared with the output of a known correct reference decoder. For that purpose Fraunhofer HHI provides
an independent decoder implementation that has been cross verified with the official JVT reference software. Automation
of these tests is possible.
Features
| Applications |
Mobile Phone, SD and HDTV Broadcast, DVD, D-Cinema etc. |
| Stream formats |
Annex B Byte stream, MPEG-2 transport stream |
| Software |
Reference decoder (Windows) |
| User interface |
Command line, configuration files |
| Real-time capability |
Not intended |
| Profiles |
Baseline, Main, Extended, High |
| Level |
1.0 – 5.1 |
| Reference output |
YUV 4:2:0 file or on-screen, CRC32 checksum, syntax element trace file, error log file |
Background
The Image Processing Department of Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut (HHI) is an
internationally renowned competence centre for video processing, coding, and transmission. HHI has a leading role in
international standardization activities for video coding (MPEG: Video Co-Chair, ITU-T: Associated Rapporteur, JVT: Co-chair).
HHI exploits its R&D and standardization results as prototypes and demonstrators, which are presented to the public
at various exhibitions and fairs on the one hand and as direct co-operations with various industries worldwide on the other hand.
Concerning the development of H.264/MPEG4-AVC, HHI was responsible for the integration of the official reference
software and for editing the standard. Furthermore HHI contributed important parts to the technical specification
(e.g. CABAC) and holds a number of patents.
Contact:  Karsten Suehring
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