Linux

libavcodec,libavformat Â free software/open source LGPL-lisanslı ffmpeg tarafından kullanılan codec çözme / işleme kütüphanesidir.

Ubuntu – Debian altında örnek kodu derleyebilmek için gerekli paketler :

$ sudo apt-get install libavcodec-dev libavformat-dev

Derlemek için :

g++ avf.cpp -I/usr/include/libavcodec -I/usr/include/libavformat -lavformat -lavcodec -L/usr/lib/libavformat.so -L/usr/lib/libavcodec.so -o avf

Örnek Kullanım :

./avf test.mp4

Ã‡ıktı :

Video codec Â Â Â : mp42

Width Â Â Â Â : 1920

Height Â Â Â Â : 1080

DurationÂ Â Â : 300

Audio codec Â Â : aac

Audio channels Â Â : 2

Audio samplerate Â : 44100

Audio bitrate Â Â : 128

#ifndef INT64_C
#define INT64_C(c) (c ## LL)
#define UINT64_C(c) (c ## ULL)
#endif

extern "C" {
#include &lt;avcodec.h&gt;
#include &lt;avformat.h&gt;
}

#include &lt;stdio.h&gt;
#include &lt;stdlib.h&gt;
#include &lt;iostream&gt;

//g++ avf.cpp -I/usr/include/libavcodec -I/usr/include/libavformat -lavformat -lavcodec -L/usr/lib/libavformat.so -L/usr/lib/libavcodec.so -o avf

using namespace std;

int main(int argc, char *argv[])
{
	av_log_set_level(0);
	av_register_all();
	AVFormatContext *pFormatCtx;
	const char      *filename=argv[1];

	// Open video file
	if(av_open_input_file(&amp;pFormatCtx, filename, NULL, 0, NULL)!=0)
	{
	   cout &lt; &lt; "can't open file" &lt;&lt; endl;
	   exit(-1);
	}	

	// Retrieve stream information
	if(av_find_stream_info(pFormatCtx)&lt;0)
	{
	  cout &lt;&lt; "can't get stream info" &lt;&lt; endl; 	  exit(-1); 	} 	//dump_format(pFormatCtx, 0, filename, false); 	int            i, videoStream; 	AVCodecContext *pCodecCtx; //http://ffmpeg.org/doxygen/0.6/structAVCodecContext.html 	AVCodecContext *pCodecCtx2; 	 	pCodecCtx=pFormatCtx-&gt;streams[0]-&gt;codec;
	pCodecCtx2=pFormatCtx-&gt;streams[1]-&gt;codec;

	AVCodec* vCodec;//http://ffmpeg.org/doxygen/0.6/structAVCodec.html
	AVCodec* aCodec;
	vCodec=avcodec_find_decoder(pCodecCtx-&gt;codec_id);
	aCodec=avcodec_find_decoder(pCodecCtx2-&gt;codec_id);

	cout &lt; &lt; "Video codec       : " &lt;&lt; vCodec-&gt;name &lt; &lt; endl;
	cout &lt;&lt; "Width    	  : " &lt;&lt; pCodecCtx-&gt;width &lt; &lt; endl;
	cout &lt;&lt; "Height   	  : " &lt;&lt; pCodecCtx-&gt;height &lt; &lt; endl;
	cout &lt;&lt; "Duration 	  : " &lt;&lt; pFormatCtx-&gt;duration &lt; &lt; endl;
	//cout &lt;&lt; "codec id	  : " &lt;&lt; (int)pCodecCtx2 &lt;&lt; endl;
	cout &lt;&lt; "Audio codec	  : " &lt;&lt; aCodec-&gt;name &lt; &lt; endl;
	cout &lt;&lt; "Audio channels    : " &lt;&lt; pCodecCtx2-&gt;channels &lt; &lt; endl;
	cout &lt;&lt; "Audio samplerate  : " &lt;&lt;  pCodecCtx2-&gt;sample_rate &lt; &lt; endl;
	cout &lt;&lt; "Audio bitrate     : " &lt;&lt;  pCodecCtx2-&gt;bit_rate &lt; &lt; endl;

	avcodec_close(pCodecCtx);
	avcodec_close(pCodecCtx2);

	av_close_input_file(pFormatCtx);
	return 0;
}

#ifndef INT64_C

#define INT64_C(c) (c ## LL)

#define UINT64_C(c) (c ## ULL)

#endif

extern "C" {

#include <avcodec.h>

#include <avformat.h>

}

#include <stdio.h>

#include <stdlib.h>

#include <iostream>

//g++ avf.cpp -I/usr/include/libavcodec -I/usr/include/libavformat -lavformat -lavcodec -L/usr/lib/libavformat.so -L/usr/lib/libavcodec.so -o avf

using namespace std;

int main(int argc, char *argv[])

{

av_log_set_level(0);

av_register_all();

AVFormatContext *pFormatCtx;

const char *filename=argv[1];

// Open video file

if(av_open_input_file(&pFormatCtx, filename, NULL, 0, NULL)!=0)

{

cout < < "can't open file" << endl;

exit(-1);

}

// Retrieve stream information

if(av_find_stream_info(pFormatCtx)<0)

{

cout << "can't get stream info" << endl; exit(-1); } //dump_format(pFormatCtx, 0, filename, false); int i, videoStream; AVCodecContext *pCodecCtx; //http://ffmpeg.org/doxygen/0.6/structAVCodecContext.html AVCodecContext *pCodecCtx2; pCodecCtx=pFormatCtx->streams[0]->codec;

pCodecCtx2=pFormatCtx->streams[1]->codec;

AVCodec* vCodec;//http://ffmpeg.org/doxygen/0.6/structAVCodec.html

AVCodec* aCodec;

vCodec=avcodec_find_decoder(pCodecCtx->codec_id);

aCodec=avcodec_find_decoder(pCodecCtx2->codec_id);

cout < < "Video codec : " << vCodec->name < < endl;

cout << "Width : " << pCodecCtx->width < < endl;

cout << "Height : " << pCodecCtx->height < < endl;

cout << "Duration : " << pFormatCtx->duration < < endl;

//cout << "codec id : " << (int)pCodecCtx2 << endl;

cout << "Audio codec : " << aCodec->name < < endl;

cout << "Audio channels : " << pCodecCtx2->channels < < endl;

cout << "Audio samplerate : " << pCodecCtx2->sample_rate < < endl;

cout << "Audio bitrate : " << pCodecCtx2->bit_rate < < endl;

avcodec_close(pCodecCtx);

avcodec_close(pCodecCtx2);

av_close_input_file(pFormatCtx);

return 0;

}

Örnek kod

python
Yedekle Cpanel sitelerini otomatik olarak yedeklemenizi sağlayan python betiğidir.
Centos 4.4 üstünde Cpanel 10 – 11 ile test edilmiştir.
Kurulum :

wget http://cpyedekle.googlecode.com/files/cpyedekle_0.1.py.tar.gz tar -xzf cpyedekle_0.1.py.tar.gz # mv cpyedekle_0.1.py /usr/bin/yedekle

Cron jobs ile yedekleme işleminin her gece 4’de olmasını sağlıyoruz

#crontab -e

0 4 * * * /usr/bin/yedekle -b >/dev/null 2>&1

satırını ekliyoruz.

Ayarlar :

backup_rotate_interval değişkeni sunucuda kaç günlük yedek tutulacağını bildiriyor.
Varsayılan olarak 7 , yani ftp ile sitenize bağlandığınızda yedekler dizini içinde sitenizin son 7 günlük yedeklerini göreceksiniz.
Tabi değişik varyasyonlarda mümkün örneğin cron jobs ile haftada bir yedekle’yi çalıştırıp backup_rotate_interval değişkenini 4 olarak atayıp
haftalık olarak aylık yedek tutabilirsiniz.

Katkıda bulunmak için buyrun

libavcodec ve libavformat ile video bilgilerini öğrenmek

Ftp zararlıları üzerine

Python ile Cpanel sitelerini otomatik yedekleme (Auto backup sites in Cpanel with python)