FFV1 Video Coding Format Version 4
draft-ietf-cellar-ffv1-v4-07

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Last updated 2019-10-10
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cellar                                                    M. Niedermayer
Internet-Draft                                                   D. Rice
Intended status: Standards Track                             J. Martinez
Expires: 12 April 2020                                   10 October 2019

                   FFV1 Video Coding Format Version 4
                      draft-ietf-cellar-ffv1-v4-07

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 12 April 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   Please review these documents carefully, as they describe your rights
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   provided without warranty as described in the Simplified BSD License.

Niedermayer, et al.       Expires 12 April 2020                 [Page 1]
Internet-Draft                    FFV1                      October 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Notation and Conventions  . . . . . . . . . . . . . . . . . .   4
     2.1.  Definitions . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  Conventions . . . . . . . . . . . . . . . . . . . . . . .   5
       2.2.1.  Pseudo-code . . . . . . . . . . . . . . . . . . . . .   5
       2.2.2.  Arithmetic Operators  . . . . . . . . . . . . . . . .   5
       2.2.3.  Assignment Operators  . . . . . . . . . . . . . . . .   6
       2.2.4.  Comparison Operators  . . . . . . . . . . . . . . . .   6
       2.2.5.  Mathematical Functions  . . . . . . . . . . . . . . .   7
       2.2.6.  Order of Operation Precedence . . . . . . . . . . . .   7
       2.2.7.  Range . . . . . . . . . . . . . . . . . . . . . . . .   8
       2.2.8.  NumBytes  . . . . . . . . . . . . . . . . . . . . . .   8
       2.2.9.  Bitstream Functions . . . . . . . . . . . . . . . . .   8
   3.  Sample Coding . . . . . . . . . . . . . . . . . . . . . . . .   9
     3.1.  Border  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     3.2.  Samples . . . . . . . . . . . . . . . . . . . . . . . . .  10
     3.3.  Median Predictor  . . . . . . . . . . . . . . . . . . . .  10
     3.4.  Context . . . . . . . . . . . . . . . . . . . . . . . . .  11
     3.5.  Quantization Table Sets . . . . . . . . . . . . . . . . .  11
     3.6.  Quantization Table Set Indexes  . . . . . . . . . . . . .  12
     3.7.  Color spaces  . . . . . . . . . . . . . . . . . . . . . .  12
       3.7.1.  YCbCr . . . . . . . . . . . . . . . . . . . . . . . .  12
       3.7.2.  RGB . . . . . . . . . . . . . . . . . . . . . . . . .  13
     3.8.  Coding of the Sample Difference . . . . . . . . . . . . .  15
       3.8.1.  Range Coding Mode . . . . . . . . . . . . . . . . . .  15
       3.8.2.  Golomb Rice Mode  . . . . . . . . . . . . . . . . . .  20
   4.  Bitstream . . . . . . . . . . . . . . . . . . . . . . . . . .  25
     4.1.  Parameters  . . . . . . . . . . . . . . . . . . . . . . .  26
       4.1.1.  version . . . . . . . . . . . . . . . . . . . . . . .  28
       4.1.2.  micro_version . . . . . . . . . . . . . . . . . . . .  28
       4.1.3.  coder_type  . . . . . . . . . . . . . . . . . . . . .  29
       4.1.4.  state_transition_delta  . . . . . . . . . . . . . . .  30
       4.1.5.  colorspace_type . . . . . . . . . . . . . . . . . . .  30
       4.1.6.  chroma_planes . . . . . . . . . . . . . . . . . . . .  31
       4.1.7.  bits_per_raw_sample . . . . . . . . . . . . . . . . .  31
       4.1.8.  log2_h_chroma_subsample . . . . . . . . . . . . . . .  31
       4.1.9.  log2_v_chroma_subsample . . . . . . . . . . . . . . .  32
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