http://Hybridego.net/ <Ho Cheol Jeon>

ffmpeg -i BBC.2008.OCEANS.8of8.Arctic.Ocean.720p.AC3.mkv -t 120 -b 600k -s 1280x720 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame BBBC.avi

ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy.mkv -t 120 -b 600k -s 1280x720 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame black.avi

ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy_nosub.mkv -t 120 -b 600k -s 1280x720 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame black.mkv
ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy_nosub.mkv -t 120 -s 1280x528 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame black.mkv
ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy_nosub.mkv -t 120 -s 1280x528 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame black.mp4
ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy_nosub.mkv -t 120 -s 1280x528 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libfaac black.mp4

ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy_nosub.mkv -t 120 -s 1280x528 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libfaac black.mp4
ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy_nosub.mkv -t 120 -s 1280x528 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libfaac black.mp4

ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy_nosub.mkv -t 120 -b 1200k -s 720x480 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libfaac black720480.mp4
ffmpeg -i Black.Hawk.Down.2001.720p.BluRay.x264-snoopy_nosub.mkv -t 120 -b 1200k -s 720x480 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame black720480.mkv
///-----------------------------------------------------------------------------------

./ffmpeg -i Ghost.House.2004.XviD.AC3.2AUDIO.CD1-WAF.avi -t 60 -b 1200k -s 320x240  -vcodec libxvid -acodec copy gh_ac3.avi

./ffmpeg -i ac3-xvidac3cimg-amtr.dc-samplei.avi -t 60 -b 600k -s 176x144 -vcodec libxvid -ar 48000 -ab 128k -ac 6 -acodec ac3 gbb_ac3.avi

./ffmpeg -i ac3-xvidac3cimg-amtr.dc-samplei.avi -t 60 -b 600k -s 176x144 -vcodec libx264 -ar 48000 -ab 128k -ac 6 -acodec ac3 gbb_ac3.avi

./ffmpeg -i ac3-xvidac3cimg-amtr.dc-samplei.avi -t 60 -b 600k -s 176x144 -vcodec libx264 -ar 48000 -ab 128k -ac 6 -acodec ac3 gbb_ac3.avi

./ffmpeg -i loveages_xvid.avi -t 60 -b 1200k -vcodec libx264 -ar 44100 -ab 192k -ac 2 -acodec ac3 love_x264_ac3.avi

./ffmpeg -i NCIS.Los.Angeles.S01E01.720p.HDTV.X264-DIMENSION.mkv -t 60 -sameq -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame ncis.mkv

./ffmpeg -i NCIS.Los.Angeles.S01E01.720p.HDTV.X264-DIMENSION.mkv -t 60 -sameq -vcodec copy -ar 44100 -ab 128k -ac 2 -acodec libmp3lame ncis.mkv

./ffmpeg -i NCIS.Los.Angeles.S01E01.720p.HDTV.X264-DIMENSION.mkv -t 30 -sameq -vcodec libx264 -ar 48000 -ab 128k -ac 6 -acodec ac3 ncis-ac3-6ch.mkv

./ffmpeg -i NCIS.Los.Angeles.S01E01.720p.HDTV.X264-DIMENSION.mkv -t 60 -vcodec copy -ar 48000 -ab 128k -ac 6 -acodec ac3 ncis-ac3-6ch.avi

#if 0
#define gprintf(fmt, args...)      \
 LOGE("[%d],%s:%d, %s(): "fmt,           \
   gettid(), GET_SHORT_FILENAME(__FILE__), __LINE__, __FUNCTION__,     ##args)
#else
#define gprintf(fmt, args...)
#endif   

char name[256];

int i;
int *ptr = (int *)aFileName.get_str();

for (i = 0; i < aFileName.get_size(); i++) {
    name[i] = ptr[i];
}

./ffmpeg -i HighKick.E55.091126.HDTV.720p.x264.AC3-ThinkBiG.mkv -t 360 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec ac3 high.mkv

./ffmpeg -i 'f(x)-LA-cha-Ta(4in1)3.mkv' -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec ac3 fx_lachata.mkv

///--------------------------------------------------------------------------------------------------------------------

 [ffmpeg] 동영상의 길이(시간) 확인하기 

ffmpeg으로 동영상에서 음성이나 영상 추출시 사용할 수 있다.

----- 영상 -------------------------------------------
FPS 구하기 : 비디오스트림의 r_frame_rate를 변환하면 fps를 구할 수 있다.
double fps   = av_q2d(pFormatCtx->streams[videoStream]->r_frame_rate);

동영상 길이 구하기 :
 비디오스트림의 time_base는 프레임당 시간값이 저장되어 있다.
 그리고 비디오스트림의 duration에는 총 프레임 수가 저장되어 있다.

 이 두 값을 곱하면 동영상의 총 길이를 구할 수 있다.
double dur = av_q2d(pFormatCtx->streams[videoStream]->time_base) * pFormatCtx->streams[videoStream]->duration;

----- 음성 -------------------------------------------
audioStream의 데이터 값 중 duration 값에는 오디오에 할당된 실제 바이트가 입력되어 있다.
pFormatCtx->streams[audioStream]->duration

따라서 wave header를 생성시 이 값을 그대로 넣으면 된다.

wf.nSubChunk2Size = (DWORD)( pFormatCtx->streams[audioStream]->duration );

audio의 시간을 알고 싶다면

pFormatCtx->streams[audioStream]->duration / wf.nAvgBytesPerSec

하면 초단위의 시간이 나온다.

---------------------------------------------------------------------------------------------
// FFMPEG을 이용한 웨이브 헤더 생성

MY_WAVEFORMATEX wf;
wf.Riff   = 0x46464952;    // "RIFF" { 'R', 'I', 'F', 'F' };
wf.Wave   = 0x45564157;    // "WAVE" { 'W', 'A', 'V', 'E' };
wf.Fmt   = 0x20746D66;    // "fmt " { 'f', 'm', 't', ' ' };
wf.nSubChunk1Size = 16;
wf.wFormatTag  = WAVE_FORMAT_PCM;  // PCM_WAVE = 1
wf.nChannels  = pCodecCtx_a->channels > 2 ? 2 : pCodecCtx_a->channels;
wf.nSamplesPerSec = pCodecCtx_a->sample_rate;
switch(pCodecCtx_a->sample_fmt) {
    case SAMPLE_FMT_U8 :     wf.wBitsPerSample = 8;     break;
    case SAMPLE_FMT_S16 :    wf.wBitsPerSample = 16;   break;
    case SAMPLE_FMT_S32 :    wf.wBitsPerSample = 32;   break;
    default :    bAudio = false;                                           break;
}
wf.nBlockAlign  = (wf.wBitsPerSample / 8) * wf.nChannels;
wf.nAvgBytesPerSec = wf.nSamplesPerSec * wf.nBlockAlign;
wf.Data    = 0x61746164;    // "data" { 'd', 'a', 't', 'a' };
wf.nSubChunk2Size = (DWORD)( pFormatCtx->streams[audioStream]->duration );
wf.nChunkSize  = wf.nSubChunk2Size + sizeof(MY_WAVEFORMATEX) - 8;

ffmpeg -i test_h264_mp3_176x144.avi -vcodec copy -ar 44100 -ab 128k -ac 2 -acodec libmp3lame aa.mkv
ffmpeg -i test_h264_mp3_176x144.avi -vcodec copy -acodec copy aa.mkv

ffmpeg -i 320x240_csi.mkv -vcodec copy -acodec copy aa.avi

./ffmpeg -i test_h264_mp3_176x144.avi -vcodec copy -an aa.avi

./ffmpeg -i test_h264_mp3_176x144.avi -vn -ar 44100 -ab 128k -ac 2 -acodec libmp3lame novideo.mkv

ffmpeg -i test_h264_mp3_176x144.avi -vcodec copy -ar 44100 -ab 128k -ac 2 -acodec libmp3lame aa.mkv

ffmpeg -i test_h264_mp3_176x144.mkv -vcodec copy -ar 44100 -ab 128k -ac 2 -acodec libmp3lame gg.avi

./ffmpeg -i test_h264_mp3_176x144.avi -vn -ar 44100 -ab 128k -ac 2 -acodec libmp3lame novideo.avi

./ffmpeg -i test_h264_mp3_176x144.avi -vcodec copy -ar 44100 -ab 128k -ac 2 -acodec libmp3lame av.avi

ffmpeg -i ac3-xvidac3cimg-amtr.dc-samplei.avi -sameq  -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame erase.mkv

ffmpeg -i Ghost.House.2004.XviD.AC3.2AUDIO.CD1-WAF.avi -b 1200k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame ghost.mkv

ffmpeg -i Ghost.House.2004.XviD.AC3.2AUDIO.CD1-WAF.avi -b 1200k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame ghost.mkv

ffmpeg -i csi.miami.s03e08.hdtv-lol.avi -t 360 -b 1200k -s 176x144 -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame 308_176_144.mkv

./ffmpeg -i csi.miami.s03e08.hdtv-lol.avi -t 60 -b 600k -s 176x144 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame ac3_test_48k_mp3.avi

ffmpeg -i csi.miami.s03e08.hdtv-lol.avi -t 360 -b 1200k -s 176x144 -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame 308_176_144.mkv

./ffmpeg -i loveages_xvid.avi -t 360 -b 1200k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame loveage_x264_mp3.mkv

./ffmpeg -i loveages_xvid.avi -t 120 -b 1200k -vcodec mpeg4 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame loveage_mpeg4_mp3.mkv

./ffmpeg -threads 4 -i NCIS.S07E06.720p.HDTV.x264-CTU.mkv -t 120 -b 3000k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame ncis_720p_mp3.mkv

./ffmpeg -i NCIS.S07E06.720p.HDTV.x264-CTU.mkv -t 360 -b 3000k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame ncis_720p_mp3.mkv

./ffmpeg -i NCIS.S07E06.720p.HDTV.x264-CTU.mkv -t 360 -b 3000k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame ncis_720p_mp3.avi

// xvid
./ffmpeg -threads 4 -i NCIS.S07E06.720p.HDTV.x264-CTU.mkv -t 180 -b 5000k -vcodec libxvid -ar 44100 -ab 128k -ac 2 -acodec libmp3lame xvid_ncis_720p_mp3.avi

./ffmpeg -threads 4 -i xvid_ncis_720p_mp3.avi -t 90 -b 3000k -vcodec libxvid -ar 44100 -ab 128k -ac 2 -acodec libmp3lame 264_ncis_720p_mp3.avi
./ffmpeg -threads 4 -i xvid_ncis_720p_mp3.avi -t 90 -b 3000k -vcodec libxvid -ar 44100 -ab 128k -ac 2 -acodec libmp3lame 264_ncis_720p_mp3.mkv

// docu
./ffmpeg -i H264_720P_dessin_docu.avi -t 180 -vcodec copy -ar 44100 -ab 128k -ac 2 -acodec libmp3lame docu_720p_mp3.avi
./ffmpeg -i H264_720P_dessin_docu.avi -t 180 -b 3000k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame docu_720p_mp3.avi
./ffmpeg -i H264_720P_dessin_docu.avi -t 180 -b 3000k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame docu_720p_mp3.mkv

- win32
./ffmpeg -i H264_720P_dessin_docu.avi -t 180 -vcodec copy -ar 44100 -ab 128k -ac 2 -acodec libmp3lame docu_720p_mp3.avi
ffmpeg -i docu_720P_dessin_docu.avi -t 180 -b 3000k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame docu_720p_mp3.avi
ffmpeg -i docu_720P_dessin_docu.avi -t 180 -b 3000k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame docu_720p_mp3.mkv

ffmpeg -threads 4 -i coyote_300sec_720ph264mp3.mkv -t 60 -b 5000k -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame co_720p.avi

ffmpeg -i co_720p.avi -b 5000k -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame co_720p.mkv

//yu

./ffmpeg -i yu_06.avi -t 120 -b 3000k -vcodec libx264 -ar 44100 -ab 128k -ac 2 -acodec libmp3lame yu_720p_mp3.avi

// coyote

./ffmpeg -i coyote_300sec_720ph264mp3.mkv -t 180 -s 1536x720 -b 5000k -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame coyote_1536_720p_mp3.avi

./ffmpeg -i coyote_300sec_720ph264mp3.avi -vcodec copy -ar 48000 -ab 128k -ac 2 -acodec libmp3lame coyote_300sec_720ph264mp3_fix.mkv

./ffmpeg -i coyote_300sec_720ph264mp3.avi -b 4500k -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame coyote_300sec_720ph264mp3_fix_avi_ffmpeg.mkv

./

./ffmpeg -i tellme.mpg -t 60 -b 5000k -s 1280x720 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame bbc.avi
./ffmpeg -i tellme.mpg -t 60 -b 5000k -s 1280x720 -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame bbc.mkv

./ffmpeg -threads 4 -i NCIS.S07E06.720p.HDTV.x264-CTU.mkv -t 80 -b 6000k -vcodec mpeg4 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame ncis.mp4

./ffmpeg -i ncis.mp4 -t 60 -b 5000k -vcodec libx264 -ar 48000 -ab 128k -ac 2 -acodec libmp3lame ncis.avi

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