FFV1 Video Coding Format Version 4
draft-ietf-cellar-ffv1-v4-16
cellar M. Niedermayer
Internet-Draft
Intended status: Standards Track D. Rice
Expires: 4 June 2021
J. Martinez
1 December 2020
FFV1 Video Coding Format Version 4
draft-ietf-cellar-ffv1-v4-16
Abstract
This document defines FFV1, a lossless intra-frame video encoding
format. FFV1 is designed to efficiently compress video data in a
variety of pixel formats. Compared to uncompressed video, FFV1
offers storage compression, frame fixity, and self-description, which
makes FFV1 useful as a preservation or intermediate video format.
Status of This Memo
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This Internet-Draft will expire on 4 June 2021.
Copyright Notice
Copyright (c) 2020 IETF Trust and the persons identified as the
document authors. All rights reserved.
Niedermayer, et al. Expires 4 June 2021 [Page 1]
Internet-Draft FFV1 December 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Notation and Conventions . . . . . . . . . . . . . . . . . . 4
2.1. Definitions . . . . . . . . . . . . . . . . . . . . . . . 5
2.2. Conventions . . . . . . . . . . . . . . . . . . . . . . . 5
2.2.1. Pseudo-code . . . . . . . . . . . . . . . . . . . . . 6
2.2.2. Arithmetic Operators . . . . . . . . . . . . . . . . 6
2.2.3. Assignment Operators . . . . . . . . . . . . . . . . 7
2.2.4. Comparison Operators . . . . . . . . . . . . . . . . 7
2.2.5. Mathematical Functions . . . . . . . . . . . . . . . 7
2.2.6. Order of Operation Precedence . . . . . . . . . . . . 8
2.2.7. Range . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.8. NumBytes . . . . . . . . . . . . . . . . . . . . . . 9
2.2.9. Bitstream Functions . . . . . . . . . . . . . . . . . 9
3. Sample Coding . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1. Border . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2. Samples . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3. Median Predictor . . . . . . . . . . . . . . . . . . . . 11
3.3.1. Exception . . . . . . . . . . . . . . . . . . . . . . 11
3.4. Quantization Table Sets . . . . . . . . . . . . . . . . . 12
3.5. Context . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.6. Quantization Table Set Indexes . . . . . . . . . . . . . 13
3.7. Color spaces . . . . . . . . . . . . . . . . . . . . . . 13
3.7.1. YCbCr . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7.2. RGB . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.8. Coding of the Sample Difference . . . . . . . . . . . . . 16
3.8.1. Range Coding Mode . . . . . . . . . . . . . . . . . . 16
3.8.2. Golomb Rice Mode . . . . . . . . . . . . . . . . . . 22
4. Bitstream . . . . . . . . . . . . . . . . . . . . . . . . . . 28
4.1. Quantization Table Set . . . . . . . . . . . . . . . . . 29
4.1.1. quant_tables . . . . . . . . . . . . . . . . . . . . 30
4.1.2. context_count . . . . . . . . . . . . . . . . . . . . 31
4.2. Parameters . . . . . . . . . . . . . . . . . . . . . . . 31
4.2.1. version . . . . . . . . . . . . . . . . . . . . . . . 33
4.2.2. micro_version . . . . . . . . . . . . . . . . . . . . 33
4.2.3. coder_type . . . . . . . . . . . . . . . . . . . . . 34
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