AVS2 / AVS3
Chinese Audio Video Coding Standard, used for broadcast and surveillance in China.
Standards: GB/T 33475.2 (AVS2), T/AI 109 (AVS3)
Sequence Structures
Standard or specification: T/AI 109.2-2021 (AVS2), T/AI 109.3-2021 (AVS3)
| Human-friendly name | Syntax element name, as defined in the spec | Support Level |
|---|
| AVS2 Video Sequence Header | video_sequence_header | |
| AVS3 Video Sequence Header | video_sequence_header | |
| Video Sequence End | video_sequence_end_code | |
| Video Edit Code | video_edit_code | |
Picture Structures
Standard or specification: T/AI 109.2-2021 (AVS2), T/AI 109.3-2021 (AVS3)
| Human-friendly name | Syntax element name, as defined in the spec | Support Level |
|---|
| AVS2 Intra Picture Header | intra_picture_header | |
| AVS3 Intra Picture Header | intra_picture_header | |
| Inter Picture Header | inter_picture_header | |
| AVS3 Patch Header | patch_header | |
| AVS2 Slice Header | slice_header | |
Sequence Extensions
Standard or specification: T/AI 109.2-2021 (AVS2), T/AI 109.3-2021 (AVS3)
| Human-friendly name | Syntax element name, as defined in the spec | Support Level |
|---|
| Sequence Display Extension | sequence_display_extension | |
| Temporal Scalability Extension | temporal_scalability_extension | |
| Copyright Extension | copyright_extension | |
| HDR Dynamic Metadata Extension | hdr_dynamic_metadata_extension | |
| Mastering Display and Content Metadata Extension | mastering_display_and_content_metadata_extension | |
Picture Extensions
Standard or specification: T/AI 109.2-2021 (AVS2), T/AI 109.3-2021 (AVS3)
| Human-friendly name | Syntax element name, as defined in the spec | Support Level |
|---|
| Picture Display Extension | picture_display_extension | |
| Camera Parameters Extension | camera_parameters_extension | |
| ROI Parameters Extension | roi_parameters_extension | |
| AVS3 Picture Features Extension | picture_features_extension | |
| AVS2 Cross Random Access Point Reference Extension | cross_random_access_point_reference_extension | |
Supplementary Elements
Standard or specification: T/AI 109.2-2021 (AVS2), T/AI 109.3-2021 (AVS3)
| Human-friendly name | Syntax element name, as defined in the spec | Support Level |
|---|
| AIR Parameters Extension | air_parameters_extension | |
| User Data | user_data | |
AVS3 Decoding Parameters
Standard or specification: T/AI 109.3-2021
| Human-friendly name | Syntax element name, as defined in the spec | Support Level |
|---|
| Reference Picture List Set | reference_picture_list_set | |
| Weight Quantization Matrix | weight_quant_matrix | |
| Coding Unit Configuration | coding_unit_configuration (within video_sequence_header) | |
MP4 Container
Standard or specification: AVS1-P9 (T/AI 109.1 / IEEE 1857.1)
| Human-friendly name | Syntax element name, as defined in the spec | Support Level |
|---|
| AVS3 Visual Sample Entry | AVS3SampleEntry ('avs3') | |
| AVS3 Configuration Box | Avs3DecoderConfigurationRecord ('av3c') | |