.TH "MP4" "3" "Version 0.9" "Cisco Systems Inc." "MP4 File Format Library".SH "NAME".LP \fBMP4SetVerbosity\fR \- Sets the level of diagnostic information.SH "SYNTAX".LP #include <mp4.h>.LP bool \fBMP4SetVerbosity\fR(.br         MP4FileHandle \fIhFile\fP,.br         u_int32_t \fIverbosity\fP.br ).SH "ARGUMENTS".LP .TP \fIhFile\fPSpecifies the mp4 file to which the operation applies..TP \fIverbosity\fPSpecifies a bitmask of diagnostic details the library should print to stdout during its functioning. The default is to operate silently. Possible values are:.br 	MP4_DETAILS_ERROR	Reasons for errors.br 	MP4_DETAILS_WARNING	Warnings.br 	MP4_DETAILS_READ	Read operations.br 	MP4_DETAILS_WRITE	Write operations.br 	MP4_DETAILS_FIND	Find property operations.br 	MP4_DETAILS_TABLE	Per table entry info.br 	MP4_DETAILS_SAMPLE	Per sample info.br 	MP4_DETAILS_HINT	Per RTP hint info.br 	MP4_DETAILS_ALL	All possible details.SH "RETURN VALUES".LP Upon success, true (1). Upon an error, false (0)..SH "DESCRIPTION".LP \fBMP4SetVerbosity\fR allows control over the level of diagnostic information printed out by the library. It can be called at any time. Since much is done by the library when opening an mp4 file, this function is built into functions such as MP4Create(), MP4Modify(), and MP4Read()..SH "SEE ALSO".LP MP4(3)