ffmpeg 변환 하는 명령어 모음 -----------------

멀티미디어 : 2009. 11. 11. 11:40

///-Stream 재전송----------------------------------------------------------------------------------

./ffmpeg -i rtmp://서버ip -acodec copy -vcodec copy -f mpegts -bsf:v h264_mp4toannexb udp://destip:1234

///-image----------------------------------------------------------------------------------

YUV -> JPEG

date;for i in {001..100};do ../ffmpeg -s 1920x1080 -pix_fmt yuv420p -i ./ho$i.yuv ./$i.jpg -loglevel panic;done;date

./ffmpeg -s 1920x1080 -pix_fmt yuv420p -i ../../ho0000241.yuv ./test.jpg

ffmpeg -s 640x480 -pix_fmt yuv420p -i test-yuv420p.yuv test-640x480.jpg

ffmpeg -s 640x480 -pix_fmt uyvy422 -i test-yuv422uyvy.yuv test-640x480.jpg

JPEG-> YUV

ffmpeg -i test-640x480.jpg -s 640x480 -pix_fmt yuv420p test-yuv420p.yuv

///-Video----------------------------------------------------------------------------------

/// h265

ffmpeg -i input -c:v libx265 -preset medium -crf 28 -c:a aac -b:a 128k output.mp4

///

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 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 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

동영상 자르기

ffmpeg -i 동영상.mp4 -ss 시작초 -t 몇초동안자를것인가 -vcodec copy -acodec copy 동영상2.mp4

ffmpeg -i 동영상.mp4 -ss 5 -t 25 -vcodec copy -acodec copy 동영상2.mp4

라고 하면 5초부터 30초까지 잘라지는 것임.

///-- 자막-subtitle-closed caption-----------------------------------------------------------------------------------------------------------------

2008 ./ffmpeg -i sub.tp -codec:s:0 sub.srt

2009 ./ffmpeg -i sub.tp -codec:s:1 sub.srt

2010 ./ffmpeg -i sub.tp -codec:s:2 sub.srt

2011 ./ffmpeg -i sub.tp -vn -an -codec:s srt sub.srt

2016 ./ffmpeg -i sub.tp -vn -an -c:s:0 srt sub.srt

2018 ./ffmpeg -i sub.tp -vn -an -c:s:1 srt sub.srt

2020 ./ffmpeg -f lavfi -i movie=sub.tp[out+subcc] -map 0:1 sub.srt

2021 ./ffmpeg -f lavfi -i movie=sub.tp[out+subcc] -map 0:2 sub.srt

2022 ./ffmpeg -f lavfi -i movie=sub.tp[out+subcc] -map 0:1 sub.srt

2025 ./ffprobe -f lavfi -i movie=sub.tp[out+subcc]

2026 ./ffmpeg -i sub.tp -an -vn -bsf:s mov2textsub -scodec copy -f rawvideo sub.srt

./ccextractor -in=ts -out=srt -nobom -o sub.srt -utf8 -svc 1 "/home/lionelj/hoho/file/media/ts/세계테마기행.E1669.지중해의 푸른 전설, 몰타 2부.160531.1080i.HDTV.MPEG2-Empyree.ts"

./ccextractor -in=ts -out=srt -nobom -o sub.srt -utf8 -svc 1 "/home/lionelj/hoho/file/media/ts/세계테마기행.E1670.지중해의 푸른 전설, 몰타 3부.160601.1080i.HDTV.MPEG2-Empyree.ts"

./ccextractor -in=ts -out=srt -nobom -o sub.srt -utf8 -svc 1 "/home/lionelj/hoho/file/media/ts/[트와이스] Tell Me + CHEER UP (160529) - KBS열린음악회.tp"

./ccextractor -in=ts -out=srt -nobom -o sub.srt -utf8 -svc 1 "/home/lionelj/hoho/file/media/ts/KBS1tsdump.ts"

./ccextractor -in=ts -out=srt -nobom -o sub.srt -utf8 -svc 1 "/home/lionelj/hoho/file/media/ts/KBS2_tsdump.ts"

///--audio output null 로 보내기

ffmpeg -i /tmp/hofifo.ts -ar 8000 -ac 1 -acodec pcm_s16le /mnt/mmc6/ho.wav

fmpeg -i /tmp/hofifo.ts -ar 8000 -ac 1 -acodec pcm_s16le -f null /dev/null

ffmpeg -i /tmp/hofifo.ts -vn -ar 8000 -ac 1 -acodec pcm_s16le -f null /dev/null

SBC 로 바꾸는 방법.

./ffmpeg -i ./PharrellWilliams-Happy_FromDescpicableMe2.mp3 -ar 16000 -ab 64k -ac 1 -acodec sbc ./sbc_64k_16k_1ch.sbc

mkv로 변환하기.

#!/bin/sh

F=$1

/usr/bin/ffmpeg -threads 1 -vaapi_device /dev/dri/renderD128 -hwaccel vaapi -hwaccel_output_format vaapi -i "${F}" -vf 'format=nv12|vaapi,hwupload,scale_vaapi=w=1280:h=720' -c:v hevc_vaapi -b:v 2700k -c:a aac -b:a 192k -f matroska -y "${F}.720p.mkv" > "${F}.log" 2>&1

시놀로지 변환 스크립트

#!/bin/sh

F=$1

D=$2

sudo /var/packages/VideoStation/target/bin/ffmpeg \

-threads 1 \

-vaapi_device /dev/dri/renderD128 \

-hwaccel vaapi \

-hwaccel_output_format vaapi \

-i "${F}" \

-vf 'format=nv12|vaapi,hwupload' \

-c:v hevc_vaapi \

-crf 22 \

-acodec copy \

-f mp4 \

-y "${D}.mp4" > "${F}.log" 2>&

-crf 옵션

출처 : https://trac.ffmpeg.org/wiki/Encode/H.264

Constant Rate Factor (CRF)

Use this mode if you want to keep the best quality and don't care about the file size.

This method allows the encoder to attempt to achieve a certain output quality for the whole file when output file size is of less importance. This provides maximum compression efficiency with a single pass. By adjusting the so-called quantizer for each frame, it gets the bitrate it needs to keep the requested quality level. The downside is that you can't tell it to get a specific filesize or not go over a specific size or bitrate, which means that this method is not recommended for encoding videos for streaming.

1. Choose a CRF value

The range of the CRF scale is 0–51, where 0 is lossless, 23 is the default, and 51 is worst quality possible. A lower value generally leads to higher quality, and a subjectively sane range is 17–28. Consider 17 or 18 to be visually lossless or nearly so; it should look the same or nearly the same as the input but it isn't technically lossless.

The range is exponential, so increasing the CRF value +6 results in roughly half the bitrate / file size, while -6 leads to roughly twice the bitrate.

Choose the highest CRF value that still provides an acceptable quality. If the output looks good, then try a higher value. If it looks bad, choose a lower value.

Note: The 0–51 CRF quantizer scale mentioned on this page only applies to 8-bit x264. When compiled with 10-bit support, x264's quantizer scale is 0–63. You can see what you are using by referring to the ffmpeg console output during encoding (yuv420p or similar for 8-bit, and yuv420p10le or similar for 10-bit). 8-bit is more common among distributors.