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Beginner
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number of frames

hi,
how can i get the total number of frames of a video?
regards,
michael
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4 Replies
Highlighted
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From where do you want to get total number of video? What IPP component you are using?

Vladimir
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Beginner
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From where do you want to get total number of video? What IPP component you are using?

Vladimir

i'm using unified media classes to write a video-decoder/player. so i'd like to show the totalnumber of frames,e.g. of a mpeg2-video, in the gui.

michael
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Quoting - mikl_la

i'm using unified media classes to write a video-decoder/player. so i'd like to show the totalnumber of frames,e.g. of a mpeg2-video, in the gui.

michael

Unless your file wrapper contains this number, you have to partially decode the stream I think.
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Quoting - shyaki

Unless your file wrapper contains this number, you have to partially decode the stream I think.

You can retreive video/audio/etc information using MediaInfo.

The sample code is followed..

[cpp]#include 

#include "MediaInfoDLL.h"

using namespace MediaInfoLib;

int GetMovieInfo(
	char*					_inp08FilePath,
{
	MediaInfo				MI;
	char					np08Buf[2048]
	int						n32Result,n32FrameCount;


	n32Result = MI.Open(_T(_inp08FilePath));
		
		if (n32Result == 0)
			return -1;

	/*
	 * Retrieve general movie information
	 */
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("FileName"        ),	Info_Text, Info_Name).c_str()); 
	sprintf(np08Cuf,"%s", MI.Get(Stream_General, 0, _T("FileExtension"   ),	Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("FileSize"        ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("Format/String"   ),	Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("Format/Family"   ),	Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("PlayTime/String3"), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("Duration"        ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("BitRate"         ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("OveralBitRate"   ),	Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("VideoCount"      ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("AudioCount"      ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_General, 0, _T("TextCount"       ),	Info_Text, Info_Name).c_str()); 
	
	
	/*
	 * Retrieve video information
	 */
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("Codec/String"             ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("Codec/Family"             ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("Width"                    ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("Height"                   ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("BitRate"                  ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("BitRate_Nominal"          ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("BitRate_Mode"             ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("DisplayAspectRatio"       ), Info_Text, Info_Name).c_str()); 
    sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("DisplayAspectRatio/String"), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("FrameRate"                ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("Interlacement/String"     ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Video, 0, _T("FrameCount"               ), Info_Text, Info_Name).c_str()); 
	
	n32FrameCount = atoi(np08Buf);


	/*
	 * Retrieve audio information
	 */
	sprintf(np08Buf,"%s", MI.Get(Stream_Audio, 0, _T("Codec"             ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Audio, 0, _T("Codec/String"      ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Audio, 0, _T("BitRate"           ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Audio, 0, _T("BitRate_Mode"      ), Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Audio, 0, _T("Channel(s)"        ),	Info_Text, Info_Name).c_str()); 
	sprintf(np08Buf,"%s", MI.Get(Stream_Audio, 0, _T("SamplingRate"      ),	Info_Text, Info_Name).c_str()); 
	

	MI.Close();

	return 1;
}



[/cpp]

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