FFV1 Video Coding Format Version 4
draft-ietf-cellar-ffv1-v4-04

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cellar                                                    M. Niedermayer
Internet-Draft
Intended status: Standards Track                                 D. Rice
Expires: August 10, 2019
                                                             J. Martinez
                                                        February 6, 2019

                   FFV1 Video Coding Format Version 4
                      draft-ietf-cellar-ffv1-v4-04

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.

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   This Internet-Draft will expire on August 10, 2019.

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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   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   include Simplified BSD License text as described in Section 4.e of

Niedermayer, et al.      Expires August 10, 2019                [Page 1]
Internet-Draft                    FFV1                     February 2019

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

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 . . . . . . . . . . . . .  14
       3.8.1.  Range Coding Mode . . . . . . . . . . . . . . . . . .  15
       3.8.2.  Golomb Rice Mode  . . . . . . . . . . . . . . . . . .  19
   4.  Bitstream . . . . . . . . . . . . . . . . . . . . . . . . . .  24
     4.1.  Parameters  . . . . . . . . . . . . . . . . . . . . . . .  24
       4.1.1.  version . . . . . . . . . . . . . . . . . . . . . . .  25
       4.1.2.  micro_version . . . . . . . . . . . . . . . . . . . .  26
       4.1.3.  coder_type  . . . . . . . . . . . . . . . . . . . . .  27
       4.1.4.  state_transition_delta  . . . . . . . . . . . . . . .  27
       4.1.5.  colorspace_type . . . . . . . . . . . . . . . . . . .  27
       4.1.6.  chroma_planes . . . . . . . . . . . . . . . . . . . .  28
       4.1.7.  bits_per_raw_sample . . . . . . . . . . . . . . . . .  28
       4.1.8.  log2_h_chroma_subsample . . . . . . . . . . . . . . .  28