GB/T 37001-2018 in English
VALIDMaterial exchange formats for high definition TV programmes
- Issued on:2018-12-28
- Implemented on:2019-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
$476.00
| Standard No: | GB/T 37001-2018 |
| Document status: | VALID |
| Title in English: | Material exchange formats for high definition TV programmes |
| Title in Chinese: | 高清晰度电视节目素材交换格式 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2018-12-28 |
| Implemented on: | 2019-07-01 |
| ICS Classification: | 33.160-audio, video and audiovisual engineering |
| Chinese Classification: | M63-Program transmission |
| Professional Classification: | GB-National Standard |
| Related Keywords: | material exchange formats
unique material identification system technical featurescompatibility requirements op1a mxf broadcast system exchange smpte mxf standard system different material types |
| Related Topics: | visual method
Mirror Clarity clarity The Three Elements of TV high definition shimmer clarity program specification GBT37001 GB/T 37001-2018 Clarity detection |
《GB/T 37001-2018高清晰度电视节目素材交换格式》由TC239（全国广播电影电视标准化技术委员会）归口，主管部门为国家广播电视总局。
Introduction
Analysis of the core framework of the standard
This standard is based on the SMPTE MXF standard system and is customized for the needs of my country's radio and television industry. It focuses on standardizing the two operating modes of OP1a and OP-Atom:
| Mode type | Applicable scenarios | Core technical features | Compatibility requirements |
|---|---|---|---|
| OP1a MXF | Broadcast system exchange | Multi-body partition structure, mandatory index table, GOP alignment | Requires support for MPEG-2 50Mbps decoding |
| OP-Atom MXF | Production/Media Asset System | Independent encapsulation of VC-3/AVC/PCM, simplified metadata | Requires support for VC-3 or AVC-Intra decoding |
Key Technical Requirements
1. File Structure Specifications
OP1a mode adopts a multi-body partition structure, with the following requirements:
- Partition package status must be "Closed" and "Complete"
- KAG alignment benchmark recommended to be 512 bytes
- The padding key value is fixed to
06.0E.2B.34.01.01.01.02.03.01.02.10.01.00.00.00
2. Entity Data Encapsulation
Encapsulation requirements for different material types:
| Media type | Coding standard | Mapping specification | Key parameters |
|---|---|---|---|
| Video | MPEG-2/VC-3/AVC | SMPTE ST 381-2/2019-4/381-3 | GOP structure, AFD embedding |
| Audio | PCM | SMPTE ST 382 | 48kHz sampling, 1920 samples/frame |
Implementation recommendations
Production system adaptation solution
- Non-editing software needs to support reading and writing of OP-Atom VC-3 format
- Media asset system should be compatible with AVC-Intra Class100 encapsulation
- The transcoding process maintains 10-bit color depth processing
Broadcast system optimization direction
- Server decoder needs to support MPEG-2 422P@HL decoding
- Index table preloading mechanism improves access efficiency
- Automatic verification and conversion of AFD information
Typical application case
A provincial TV station adopts OP-Atom AVC-Intra MXF is used as the main production format to achieve efficient workflow through the following measures:
- Establish a unique material identification system based on UUID
- Force writing of AFD value in CDCI descriptor
- Use KAG=512 to optimize disk I/O performance
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