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ffmpegã«é–¢ã™ã‚‹yhmtã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (7)

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ffmpegã‚’ä½¿ã£ã¦æ˜ åƒã¨éŸ³å£°ã‚’çµåˆã™ã‚‹ - Qiita
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yhmt 2020/02/23
ffmpeg
ãƒªãƒ³ã‚¯
ffmpegã§å‹•ç”»ã®å„ç¨®æƒ…å ±ã‚’ç¢ºèªã™ã‚‹ - Qiita
ã¯ã˜ã‚ã« ã“ã‚“ã«ã¡ã¯ã€ffmpegç•Œã®é…¸è¾£æ¹¯éººã§ã™ã€‚ ffprobe (avprobe) ã§å„ç¨®æƒ…å ±ã‚’è¡¨ç¤ºã™ã‚‹ ã„ããªã‚Šã‚¿ã‚¤ãƒˆãƒ«ã¨é•ã„ã¾ã™ãŒã€ffmpeg (avprobe)ã§ã®å‹•ç”»æƒ…å ±ã®è¡¨ç¤ºã¯ffprobe(avprobe)ã§è¡Œã£ã¦ã‚‹ã®ã§ã€ã“ã¡ã‚‰ã§èª¿ã¹ã¦ã„ãã¾ã™ã€‚ï¼ˆffmpeg -i ã¨ã—ã¦ã‚‚ã»ã¼åŒã˜ã ã‘ã©ã€ãã®å ´åˆå‡ºåŠ›ãƒ•ã‚¡ã‚¤ãƒ«åæŒ‡å®šã—ã‚ã‚„ã£ã¦ã„ã†ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒå‡ºã‚‹ï¼‰ % avprobe test.m4v avprobe version 0.8.10, Copyright (c) 2007-2013 the Libav developers built on Apr 22 2014 07:24:42 with gcc 4.7.2 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.m4v': Metadata: major_brand : M4V m
yhmt 2020/02/23
ffmpeg
ãƒªãƒ³ã‚¯
FFmpegã§å‹•ç”»ã‹ã‚‰éŸ³å£°ã ã‘ç„¡åŠ£åŒ–æŠ½å‡ºï¼ˆåˆ†é›¢ï¼‰
ã¾ãˆãŒã FFmpegã¯å‹•ç”»ã‚„éŸ³å£°ã‚’å†ç”Ÿãƒ»å¤‰æ›ã™ã‚‹ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã§ã™ã€‚ä»–ã«ã‚‚ãƒ•ã‚£ãƒ«ã‚¿å‡¦ç†ã‚’ã—ãŸã‚Šç›´æŽ¥ã‚¹ãƒˆãƒªãƒ¼ãƒŸãƒ³ã‚°ã•ã›ã‚‹ãªã©æ§˜ã€…ãªæ©Ÿèƒ½ã‚’æœ‰ã—ã¦ã„ã‚‹ãŸã‚å¤šãã®ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ã«æŽ¡ç”¨ã•ã‚Œã¦ã„ã¾ã™ã€‚ã•ã‚‰ã«Linuxã€macOSã€Windowsãªã©ã»ã¼å…¨ã¦ã®OSã‚„ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒãƒ£ã§å‹•ä½œã—ã¾ã™ã€‚ FFmpegã‚’ä½¿ãˆã°ã‚³ãƒ”ãƒ¼ã‚¬ãƒ¼ãƒ‰ãªã©ãŒã‹ã‹ã£ã¦ã„ã‚‹ç‰¹æ®Šãªå‹•ç”»ã‚„å®Œå…¨ã«ãƒ‡ãƒ¼ã‚¿ãŒç ´å£Šã•ã‚ŒãŸå‹•ç”»ä»¥å¤–ãªã‚‰ã°éŸ³å£°ã ã‘ã‚’ç„¡åŠ£åŒ–ã§åˆ†é›¢ãƒ»æŠ½å‡ºã§ãã¾ã™ã€‚ æœ¬è¨˜äº‹ã¯Linuxã‚’å‰æã¨ã—ã¦ã„ã¾ã™ãŒWindowsã§ã‚‚ã‚³ãƒžãƒ³ãƒ‰ãƒ—ãƒãƒ³ãƒ—ãƒˆã‚’ç”¨ã„ã¦åŒæ§˜ã®ã“ã¨ãŒã§ãã¾ã™ã€‚ ã‚³ãƒžãƒ³ãƒ‰ ã‚¿ãƒ¼ãƒŸãƒŠãƒ«ã‚’é–‹ã„ã¦ä»¥ä¸‹ã®ã‚³ãƒžãƒ³ãƒ‰ã‚’å…¥åŠ› $ ffmpeg -i '/hogehoge/hoge.flv' -vn -acodec copy '/hogehoge/hoge.opus' ç°¡å˜ã«è§£èª¬ã™ã‚‹ã¨ -i ã¯å‡¦ç†å†…å®¹ã‚’è¡¨ç¤ºã•ã›ã‚‹ã‚ªãƒ—ã‚·ãƒ§ãƒ³/hoge
yhmt 2020/02/23
ffmpeg
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FFmpegã§ç´ æ—©ãæ£ç¢ºã«å‹•ç”»ã‚’ã‚«ãƒƒãƒˆã™ã‚‹è‡ªåˆ†çš„ãƒ™ã‚¹ãƒˆãƒ—ãƒ©ã‚¯ãƒ†ã‚£ã‚¹ - Qiita
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yhmt 2018/04/25
ffmpeg
ãƒªãƒ³ã‚¯
ffmpegã‚’ã¤ã‹ã£ã¦mp4ã‚’ãƒªã‚µã‚¤ã‚ºã—ã¦gifã‚¢ãƒ‹ãƒ¡ã«å¤‰æ›ã™ã‚‹ - ã¿ã‹ã¥ããƒ–ãƒã‚° ãã®3
FFmpeg å–ã‚Šæ€¥ãŽãƒ¡ãƒ¢ã€‚ ffmpegã®å°Žå…¥æ‰‹é †ã¨ã‹ã¯åˆ¥é€”ã¾ã¨ã‚ãŸã„ã¨ã“ã‚ã€‚ i ã§ ã‚¤ãƒ³ãƒ—ãƒƒãƒˆã‚’æŒ‡å®š r ã§FPSã‚’æŒ‡å®š s ã§å‡ºåŠ›ã‚µã‚¤ã‚ºã‚’æŒ‡å®š ãªã®ã§ã€ ffmpeg -i input.mp4 -r 8 -s 480x360 output.gifã ã¨ã€ input.mp4 ã‚’ 8FPS ã§ 480 Ã— 360 ã§æ›¸ãå‡ºã—ã¾ã™ã€‚
yhmt 2017/12/22
ffmpeg
ãƒªãƒ³ã‚¯
ffmpegã§é€£ç•ªç”»åƒã‹ã‚‰å‹•ç”»ç”Ÿæˆ / å‹•ç”»ã‹ã‚‰é€£ç•ªç”»åƒã‚’ç”Ÿæˆ ~ã‚³ãƒžè½ã¡ã‚’é˜²ãã«ã¯~ - Qiita
â– å‹•ç”»ã‚„éŸ³å£°ã‚’æ‰±ã†ãŸã‚ã®éžå¸¸ã«å¼·åŠ›ãªãƒ„ãƒ¼ãƒ« ffmpeg ffmpegã¯å‹•ç”»ã‚„éŸ³å£°ã‚’æ‰±ã†ãŸã‚ã®éžå¸¸ã«å¼·åŠ›ãªãƒ„ãƒ¼ãƒ«ã§ã™ã€‚ Linuxã‚„Macã€Windowsã§ã‚‚ä½¿ãˆã¾ã™ã€‚æ‰±ãˆã‚‹ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã‚‚å¤šæ•°ã‚ã‚Šã€ä½¿ã„ã“ãªã›ã°ã‹ãªã‚Šã®ã“ã¨ãŒã§ãã¾ã™ã€‚ â‘ é€£ç•ªç”»åƒã‹ã‚‰å‹•ç”»å¤‰æ› é€£ç•ªç”»åƒã‹ã‚‰å‹•ç”»ã‚’ç”Ÿæˆã§ãã¾ã™ã€‚ pngé€£ç•ªç”»åƒã‹ã‚‰å‹•ç”»ç”Ÿæˆ ä¾‹ãˆã°æ¬¡ã®ã‚ˆã†ãªé€£ç•ªã®pngç”»åƒã‹ã‚‰.mp4ã®å‹•ç”»ã‚’ç”Ÿæˆã™ã‚‹å ´åˆã€‚ image_001.png image_002.png image_003.png ...... ã“ã®å ´åˆã¯ã€é€£ç•ªç”»åƒã‹ã‚‰ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¬ãƒ¼ãƒˆ60fpsã®.mp4å½¢å¼ã®å‹•ç”»ã‚’ç”Ÿæˆã—ã¾ã™ã€‚ -r ãŒ2å›žæ›¸ã„ã¦ã‚ã‚Šã¾ã™ãŒã€æœ€åˆã® -r ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§30fpsã®é€£ç•ªç”»åƒã¨ã„ã†ã“ã¨ã‚’æ˜Žç¤ºã—ã¦ã€ãã‚Œã‚’2å›žç›®ã® -r ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§60fpsã§å‹•ç”»åŒ–ã™ã‚‹ã‚ˆã†ã«æŒ‡å®šã—ã¦ã„ã¾ã™ã€‚ã¤ã¾ã‚Šã€ã“ã®å ´åˆã«å‡ºåŠ›ã•ã‚Œã‚‹å‹•ç”»ã¯ã€1ç§’é–“ã«é•ã†
yhmt 2017/02/03
ffmpeg
ãƒªãƒ³ã‚¯
ãŸã¾ã’ãŸãªã‚ - komagataã®ãƒ–ãƒã‚°
$ ffmpeg -i movie.mp4 -vf scale=240:-1,thumbnail=20 -an -vsync 0 img%03d.png $ convert -delay 20 -loop 0 *.png YJSNPI_WHO_LEAPT_THROUGHT_TIME.gif ffmpegã§20ãƒ•ãƒ¬ãƒ¼ãƒ æ¯Žã€æ¨ªå¹…240pxã‚¢ã‚¹ãƒšã‚¯ãƒˆæ¯”å›ºå®šã§ãƒªã‚µã‚¤ã‚ºã—ã€imagemagickã§anime gifåŒ–ã™ã‚‹ã€‚
yhmt 2013/04/13
ffmpeg

gifanimation
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