mp4setvideoprofilelevel.3

来自「网络MPEG4IP流媒体开发源代码」· 3 代码 · 共 82 行

.TH "MP4" "3" "Version 0.9" "Cisco Systems Inc." "MP4 File Format Library"
.SH "NAME"
.LP 
\fBMP4SetVideoProfileLevel\fR \- Sets the minimum MPEG\-4 video profile and level required to render the contents of the file
.SH "SYNTAX"
.LP 
#include <mp4.h>
.LP 
bool \fBMP4SetVideoProfileLevel\fR(
.br 
        MP4FileHandle \fIhFile\fP,
.br 
        u_int8_t \fIprofileLevel\fP
.br 
)
.SH "ARGUMENTS"
.LP 
.TP 
\fIhFile\fP
Specifies the mp4 file to which the operation applies.
.SH "RETURN VALUES"
.LP 
Upon success, true (1). Upon an error, false (0).
.SH "DESCRIPTION"
.LP 
\fBMP4SetVideoProfileLevel\fR sets the minumum profile/level of MPEG\-4 video support necessary to render the contents of the file.
.LP 
ISO/IEC 14496\-1:2001 MPEG\-4 Systems defines the following values:
.br 
	0x00		Reserved
.br 
	0x01		Simple Profile @ Level 3
.br 
	0x02		Simple Profile @ Level 2
.br 
	0x03		Simple Profile @ Level 1
.br 
	0x04		Simple Scalable Profile @ Level 2
.br 
	0x05		Simple Scalable Profile @ Level 1
.br 
	0x06		Core Profile @ Level 2
.br 
	0x07		Core Profile @ Level 1
.br 
	0x08		Main Profile @ Level 4
.br 
	0x09		Main Profile @ Level 3
.br 
	0x0A		Main Profile @ Level 2
.br 
	0x0B		N\-Bit Profile @ Level 2
.br 
	0x0C		Hybrid Profile @ Level 2
.br 
	0x0D		Hybrid Profile @ Level 1
.br 
	0x0E		Basic Animated Texture @ Level 2
.br 
	0x0F		Basic Animated Texture @ Level 1
.br 
	0x10		Scalable Texture @ Level 3
.br 
	0x11		Scalable Texture @ Level 2
.br 
	0x12		Scalable Texture @ Level 1
.br 
	0x13		Simple Face Animation @ Level 2
.br 
	0x14		Simple Face Animation @ Level 1
.br 
	0x15\-0x7F	Reserved
.br 
	0x80\-0xFD	User private
.br 
	0xFE		No audio profile specified
.br 
	0xFF		No audio required
.SH "SEE ALSO"
.LP 
MP4(3) MP4GetVideoProfileLevel(3)