[FFmpeg-devel] [PATCH v13 1/2] avformat/imf: Demuxer

Lynne dev at lynne.ee
Mon Dec 20 21:19:15 EET 2021


20 Dec 2021, 19:57 by pal at sandflow.com:

> From: Pierre-Anthony Lemieux <pal at palemieux.com>
>
> Signed-off-by: Pierre-Anthony Lemieux <pal at palemieux.com>
> ---
>
> Notes:
>  The IMF demuxer accepts as input an IMF CPL. The assets referenced by the CPL can be
>  contained in multiple deliveries, each defined by an ASSETMAP file:
>  
>  ffmpeg -assetmaps <path of ASSETMAP1>,<path of ASSETMAP>,... -i <path of CPL>
>  
>  If -assetmaps is not specified, FFMPEG looks for a file called ASSETMAP.xml in the same directory as the CPL.
>  
>  EXAMPLE:
>  ffmpeg -i http://ffmpeg-imf-samples-public.s3-website-us-west-1.amazonaws.com/countdown/CPL_f5095caa-f204-4e1c-8a84-7af48c7ae16b.xml out.mp4
>  
>  The Interoperable Master Format (IMF) is a file-based media format for the
>  delivery and storage of professional audio-visual masters.
>  An IMF Composition consists of an XML playlist (the Composition Playlist)
>  and a collection of MXF files (the Track Files). The Composition Playlist (CPL)
>  assembles the Track Files onto a timeline, which consists of multiple tracks.
>  The location of the Track Files referenced by the Composition Playlist is stored
>  in one or more XML documents called Asset Maps. More details at https://www.imfug.com/explainer.
>  The IMF standard was first introduced in 2013 and is managed by the SMPTE.
>  
>  CHANGE NOTES:
>  
>  - added libavformat/tests/imf to FATE
>
>  MAINTAINERS              |   1 +
>  configure                |   3 +-
>  doc/demuxers.texi        |   6 +
>  libavformat/Makefile     |   1 +
>  libavformat/allformats.c |   1 +
>  libavformat/imf.h        | 207 +++++++++
>  libavformat/imf_cpl.c    | 800 +++++++++++++++++++++++++++++++++++
>  libavformat/imfdec.c     | 891 +++++++++++++++++++++++++++++++++++++++
>  8 files changed, 1909 insertions(+), 1 deletion(-)
>  create mode 100644 libavformat/imf.h
>  create mode 100644 libavformat/imf_cpl.c
>  create mode 100644 libavformat/imfdec.c
>

You've once again gone back and completely ignored all coding style
issues I pointed out.


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