List of pre-defined encoding variants

Pre-defined H264 encoding variants
#define	MMAL_ENCODING_VARIANT_H264_DEFAULT   0
#define	MMAL_ENCODING_VARIANT_H264_AVC1   MMAL_FOURCC('A','V','C','1')
#define	MMAL_ENCODING_VARIANT_H264_RAW   MMAL_FOURCC('R','A','W',' ')
Pre-defined MPEG4 audio encoding variants
#define	MMAL_ENCODING_VARIANT_MP4A_DEFAULT   0
#define	MMAL_ENCODING_VARIANT_MP4A_ADTS   MMAL_FOURCC('A','D','T','S')

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Detailed Description

This defines a list of common encoding variants. This list isn't exhaustive and is only provided as a convenience to avoid clients having to use FourCC codes directly. However components are allowed to define and use their own FourCC codes.

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Define Documentation

#define MMAL_ENCODING_VARIANT_H264_AVC1   MMAL_FOURCC('A','V','C','1')

ISO 14496-15 AVC stream format

#define MMAL_ENCODING_VARIANT_H264_DEFAULT   0

ISO 14496-10 Annex B byte stream format

#define MMAL_ENCODING_VARIANT_H264_RAW   MMAL_FOURCC('R','A','W',' ')

Implicitly delineated NAL units without emulation prevention

#define MMAL_ENCODING_VARIANT_MP4A_ADTS   MMAL_FOURCC('A','D','T','S')

ADTS stream format

#define MMAL_ENCODING_VARIANT_MP4A_DEFAULT   0

Raw stream format