{"id":4875,"date":"2026-01-06T16:16:58","date_gmt":"2026-01-06T08:16:58","guid":{"rendered":"https:\/\/imastudio.com\/?p=4875"},"modified":"2026-01-06T16:17:31","modified_gmt":"2026-01-06T08:17:31","slug":"mp4-to-webp-macos-ffmpeg-script","status":"publish","type":"post","link":"https:\/\/imastudio.com\/ja\/blog\/mp4-to-webp-macos-ffmpeg-script","title":{"rendered":"macOS \u306e\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u30b9\u30af\u30ea\u30d7\u30c8\u3067 MP4 \u3092\u30eb\u30fc\u30d7\u3059\u308b WebP GIF \u30b9\u30bf\u30a4\u30eb\u306e\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306b\u5909\u63db\u3059\u308b"},"content":{"rendered":"<p class=\"wp-block-paragraph\">\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3084\u30a2\u30d7\u30ea\u958b\u767a\u306e\u4ed5\u4e8b\u3067\u306f\u3001 <strong>\u30d3\u30c7\u30aa\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u7d20\u65e9\u304f\u8996\u899a\u5316\u3059\u308b<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30d7\u30ed\u30c0\u30af\u30c8\u30de\u30cd\u30fc\u30b8\u30e3\u30fc\u5411\u3051\u306e\u30d7\u30ec\u30d3\u30e5\u30fc\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3<\/li>\n\n\n\n<li>\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084PRD\u306e\u30c7\u30e2\u30af\u30ea\u30c3\u30d7<\/li>\n\n\n\n<li>\u30bd\u30fc\u30b7\u30e3\u30eb\u6295\u7a3f\u3084\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u30da\u30fc\u30b8\u7528\u306e\u8efd\u91cf\u30e2\u30fc\u30b7\u30e7\u30f3<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u3001, <strong>MP4\u304b\u3089\u3044\u304f\u3064\u304b\u306e\u30ad\u30fc\u30d5\u30ec\u30fc\u30e0\u3092\u62bd\u51fa\u3057\u3001\u30eb\u30fc\u30d7\u3059\u308bWebP\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306b\u5909\u63db\u3059\u308b<\/strong> \u901a\u5e38\u306f\u3053\u308c\u3067\u5341\u5206\u3067\u3059\u3002\u307e\u305f\u3001\u5b8c\u5168\u306a\u30d3\u30c7\u30aa\u3092\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9\u3059\u308b\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u8efd\u91cf\u3067\u3059\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"533\" src=\"https:\/\/imastudio.com\/wp-content\/uploads\/2026\/01\/mac-os-video-to-webp-gif.jpg\" alt=\"\" class=\"wp-image-4877\" srcset=\"https:\/\/imastudio.com\/wp-content\/uploads\/2026\/01\/mac-os-video-to-webp-gif.jpg 800w, https:\/\/imastudio.com\/wp-content\/uploads\/2026\/01\/mac-os-video-to-webp-gif-300x200.jpg 300w, https:\/\/imastudio.com\/wp-content\/uploads\/2026\/01\/mac-os-video-to-webp-gif-768x512.jpg 768w, https:\/\/imastudio.com\/wp-content\/uploads\/2026\/01\/mac-os-video-to-webp-gif-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u306f <strong>macOS\u7528\u306e\u30ef\u30f3\u30af\u30ea\u30c3\u30af\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8<\/strong> \u305d\u308c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>MP4\u304b\u30896\uff5e12\u500b\u306e\u5747\u7b49\u9593\u9694\u306e\u30d5\u30ec\u30fc\u30e0\u3092\u62bd\u51fa\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u5e45\u3092720\u30d4\u30af\u30bb\u30eb\u306b\u5909\u66f4\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u30eb\u30fc\u30d7\u3059\u308bWebP\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u81ea\u52d5\u7684\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3059 <code>ffmpeg<\/code> \u6b20\u3051\u3066\u3044\u308b\u5834\u5408<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306f\u3059\u3079\u3066\u3001\u30bf\u30fc\u30df\u30ca\u30eb\u5185\u306e 1 \u3064\u306e\u30b3\u30de\u30f3\u30c9\u304b\u3089\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u30b9\u30af\u30ea\u30d7\u30c8\u306e\u6a5f\u80fd<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">macOS\u3067\u306f\u3001\u30b9\u30af\u30ea\u30d7\u30c8 <code>extract_even_frames_webp.sh<\/code> \u63d0\u4f9b:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u81ea\u52d5 <code>ffmpeg<\/code> \u691c\u51fa\u3068\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30c1\u30a7\u30c3\u30af\u3059\u308b <code>ffmpeg<\/code> \u5229\u7528\u53ef\u80fd\u3067\u3059<\/li>\n\n\n\n<li>\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u3001Homebrew\uff08\u5fc5\u8981\u306a\u5834\u5408\uff09\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304b\u3089\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059 <code>ffmpeg<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5076\u6570\u30d5\u30ec\u30fc\u30e0\u62bd\u51fa<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30d3\u30c7\u30aa\u306e\u9577\u3055\u3092\u8a08\u7b97\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u5747\u7b49\u306b\u30b5\u30f3\u30d7\u30eb <strong>6\uff5e12\u30d5\u30ec\u30fc\u30e0<\/strong> \u30af\u30ea\u30c3\u30d7\u5168\u4f53\u306b\u308f\u305f\u3063\u3066<\/li>\n\n\n\n<li>\u30c7\u30d5\u30a9\u30eb\u30c8\u306f6\u30d5\u30ec\u30fc\u30e0\u3067\u3059\u304c\u3001\u6570\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>WebP\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u751f\u6210<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u62bd\u51fa\u3057\u305fPNG\u30d5\u30ec\u30fc\u30e0\u3092\u7d50\u5408\u3057\u3066 <strong>\u30eb\u30fc\u30d7\u3059\u308bWebP<\/strong><\/li>\n\n\n\n<li>\u51fa\u529b\u5e45\u306f <strong>720\u30d4\u30af\u30bb\u30eb<\/strong> \u30c7\u30d5\u30a9\u30eb\u30c8\uff08\u9ad8\u3055\u306f\u6bd4\u4f8b\u3057\u3066\u62e1\u5927\u7e2e\u5c0f\u3055\u308c\u307e\u3059\uff09<\/li>\n\n\n\n<li>\u54c1\u8cea\u306f\u4ee5\u4e0b\u3067\u8abf\u6574\u3067\u304d\u307e\u3059 <code>-q:v<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u81ea\u52d5\u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u4e2d\u9593\u30d5\u30ec\u30fc\u30e0\u3092\u4e00\u6642\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u4fdd\u5b58\u3057\u307e\u3059<\/li>\n\n\n\n<li>WebP \u304c\u751f\u6210\u3055\u308c\u305f\u5f8c\u3001\u4e00\u6642\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u524a\u9664\u3057\u307e\u3059<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u77ed\u3044\u52d5\u753b\u3068\u9577\u3044\u52d5\u753b\u306e\u4e21\u65b9\u306b\u5bfe\u5fdc<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30d3\u30c7\u30aa\u304c\u975e\u5e38\u306b\u77ed\u3044\u5834\u5408\u3001\u30d5\u30ec\u30fc\u30e0\u6570\u306f\u81ea\u52d5\u7684\u306b\u524a\u6e1b\u3055\u308c\u307e\u3059<\/li>\n\n\n\n<li>\u9577\u3044\u52d5\u753b\u306e\u5834\u5408\u3001\u30d5\u30ec\u30fc\u30e0\u306f\u5e38\u306b\u5168\u518d\u751f\u6642\u9593\u306b\u308f\u305f\u3063\u3066\u5747\u7b49\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u5185\u90e8\u306e\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u57fa\u672c\u7684\u306a\u30ed\u30b8\u30c3\u30af\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 \u4f9d\u5b58\u95a2\u4fc2\u3092\u78ba\u8a8d\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u307e\u305a\u3001 <code>ffmpeg<\/code> \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u307e\u3059:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7528\u9014 <code>\u30b3\u30de\u30f3\u30c9 -v ffmpeg<\/code><\/li>\n\n\n\n<li>\u898b\u3064\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u3001 <code>\u91b8\u9020<\/code>\n<ul class=\"wp-block-list\">\n<li>Homebrew\u304c\u306a\u3044\u5834\u5408\u306fHomebrew\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u6b21\u306b\u4f7f\u7528 <code>brew ffmpeg \u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b<\/code> \u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b <code>ffmpeg<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 \u30d3\u30c7\u30aa\u306e\u9577\u3055\u3092\u53d6\u5f97\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528 <code>ff\u30d7\u30ed\u30fc\u30d6<\/code>, \u30b9\u30af\u30ea\u30d7\u30c8\u306b\u306f\u3001 <strong>\u30d3\u30c7\u30aa\u306e\u5408\u8a08\u6642\u9593\uff08\u79d2\uff09<\/strong>.<br>\u3053\u308c\u3068\u5e0c\u671b\u3059\u308b\u30d5\u30ec\u30fc\u30e0\u6570\u306b\u57fa\u3065\u3044\u3066\u3001\u30d5\u30ec\u30fc\u30e0\u9593\u306e\u6642\u9593\u9593\u9694\u3092\u8a08\u7b97\u3057\u307e\u3059\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2.3 \u30d5\u30ec\u30fc\u30e0\u3092\u5747\u7b49\u306b\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u30d5\u30ec\u30fc\u30e0 \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3054\u3068\u306b\u6b21\u306e\u51e6\u7406\u304c\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u3092\u8a08\u7b97\u3057\u307e\u3059 = <code>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9 \u00d7 \u9593\u9694<\/code><\/li>\n\n\n\n<li>\u7528\u9014 <code>ffmpeg -ss<\/code> \u305d\u306e\u6642\u9593\u4f4d\u7f6e\u306b\u30b8\u30e3\u30f3\u30d7\u3059\u308b<\/li>\n\n\n\n<li>\u6b63\u78ba\u306b1\u30d5\u30ec\u30fc\u30e0\u3092\u62bd\u51fa\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u30b9\u30b1\u30fc\u30eb\u3059\u308b <code>\u30b9\u30b1\u30fc\u30eb=720:-1<\/code> \u5e45\u306f720\u30d4\u30af\u30bb\u30eb\u3001\u9ad8\u3055\u306f\u6bd4\u4f8b\u3057\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.4 WebP\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3059\u3079\u3066\u306e\u30d5\u30ec\u30fc\u30e0\u304cPNG\u3068\u3057\u3066\u4fdd\u5b58\u3055\u308c\u308b\u3068\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u306f <code>ffmpeg<\/code> \u518d\u5ea6:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9806\u756a\u306b\u8aad\u3093\u3067\u304f\u3060\u3055\u3044\uff08<code>%03d.png<\/code>)<\/li>\n\n\n\n<li>\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3WebP\u3068\u3057\u3066\u30a8\u30f3\u30b3\u30fc\u30c9\u3059\u308b<\/li>\n\n\n\n<li>\u30bb\u30c3\u30c8 <code>-\u30eb\u30fc\u30d70<\/code> \u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306f\u7121\u9650\u306b\u30eb\u30fc\u30d7\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u54c1\u8cea\u7ba1\u7406 <code>-q:v 70<\/code> \uff08\u4f4e\u3044\u307b\u3069\u54c1\u8cea\u304c\u9ad8\u304f\u3001\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u304c\u5927\u304d\u304f\u306a\u308a\u307e\u3059\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.5 \u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3059\u3079\u3066\u306e\u4e2d\u9593PNG\u30d5\u30a1\u30a4\u30eb\u306f\u3001 <code>mktemp -d<\/code>.<br>WebP\u304c\u751f\u6210\u3055\u308c\u308b\u3068\u3001\u305d\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306f\u6b21\u306e\u3088\u3046\u306b\u524a\u9664\u3055\u308c\u307e\u3059\u3002 <code>rm -rf<\/code>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u5b8c\u5168\u306a\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8: extract_even_frames_webp.sh<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u6b21\u306e\u3088\u3046\u306b\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002 <code>extract_even_frames_webp.sh<\/code> Mac\u306e\u5834\u5408:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#!\/bin\/bash\n\n# Usage: .\/extract_even_frames_webp.sh input.mp4 output.webp &#91;frames]\n# frames is optional, default 6, maximum 12\n\nINPUT=\"$1\"\nOUTPUT=\"$2\"\nFRAMES=\"${3:-6}\"\n\n# Cap maximum frames at 12\nif &#91; \"$FRAMES\" -gt 12 ]; then\n    FRAMES=12\nfi\n\nif &#91; -z \"$INPUT\" ] || &#91; -z \"$OUTPUT\" ]; then\n    echo \"Usage: $0 input.mp4 output.webp &#91;frames]\"\n    exit 1\nfi\n\n# ---------------------------------\n# 1\ufe0f\u20e3 Check ffmpeg\n# ---------------------------------\nif ! command -v ffmpeg &gt;\/dev\/null 2&gt;&amp;1; then\n    echo \"\u26a0\ufe0f ffmpeg not found, starting installation...\"\n    if ! command -v brew &gt;\/dev\/null 2&gt;&amp;1; then\n        echo \"\u26a0\ufe0f Homebrew not found, installing Homebrew...\"\n        \/bin\/bash -c \"$(curl -fsSL https:\/\/raw.githubusercontent.com\/Homebrew\/install\/HEAD\/install.sh)\"\n        echo \"\u2705 Homebrew installed\"\n    else\n        echo \"\u2705 Homebrew already installed\"\n    fi\n    brew update\n    brew install ffmpeg\n    if ! command -v ffmpeg &gt;\/dev\/null 2&gt;&amp;1; then\n        echo \"\u274c ffmpeg installation failed, please check manually\"\n        exit 1\n    fi\n    echo \"\ud83c\udf89 ffmpeg installed successfully!\"\nelse\n    echo \"\u2705 ffmpeg is already installed\"\nfi\n\n# ---------------------------------\n# 2\ufe0f\u20e3 Get video duration\n# ---------------------------------\nDURATION=$(ffprobe -v error -show_entries format=duration -of csv=p=0 \"$INPUT\")\nif &#91;&#91; -z \"$DURATION\" ]]; then\n    echo \"\u274c Failed to get video duration\"\n    exit 1\nfi\nDURATION=${DURATION%.*}  # integer seconds\n\n# If video is shorter than requested frames, match frame count to duration\nif &#91; \"$DURATION\" -lt \"$FRAMES\" ]; then\n    FRAMES=$DURATION\nfi\n\necho \"\ud83d\udcf9 Video length: ${DURATION}s, extracting $FRAMES frames evenly\"\n\n# ---------------------------------\n# 3\ufe0f\u20e3 Create temporary directory\n# ---------------------------------\nTMPDIR=$(mktemp -d)\n\n# ---------------------------------\n# 4\ufe0f\u20e3 Calculate interval\n# ---------------------------------\nINTERVAL=$(echo \"scale=6; $DURATION\/$FRAMES\" | bc)\necho \"\u23f1 Frame interval: $INTERVAL seconds\"\n\n# ---------------------------------\n# 5\ufe0f\u20e3 Extract frames\n# ---------------------------------\nfor i in $(seq 0 $(($FRAMES-1))); do\n    TIME=$(echo \"$i * $INTERVAL\" | bc)\n    printf -v FILENAME \"%03d.png\" $((i+1))\n    ffmpeg -ss \"$TIME\" -i \"$INPUT\" -frames:v 1 -vf \"scale=720:-1\" \\\n        \"$TMPDIR\/$FILENAME\" -hide_banner -loglevel error\ndone\n\n# ---------------------------------\n# 6\ufe0f\u20e3 Generate animated WebP\n# ---------------------------------\nffmpeg -y -i \"$TMPDIR\/%03d.png\" -vcodec libwebp -lossless 0 -q:v 70 \\\n    -loop 0 -preset picture \"$OUTPUT\" -hide_banner -loglevel error\n\n# ---------------------------------\n# 7\ufe0f\u20e3 Clean up\n# ---------------------------------\nrm -rf \"$TMPDIR\"\n\necho \"\ud83c\udf89 Done! Generated file: $OUTPUT\"\n<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. macOS\u3067\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4fdd\u5b58\u3059\u308b<\/strong> \u4e0a\u8a18\u306e\u5185\u5bb9\u3092 <code>extract_even_frames_webp.sh<\/code>, \u305f\u3068\u3048\u3070\u3001\u30db\u30fc\u30e0\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u306a\u3069\u3067\u3059\u3002.<\/li>\n\n\n\n<li><strong>\u5b9f\u884c\u6a29\u9650\u3092\u4e0e\u3048\u308b<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>chmod +x extract_even_frames_webp.sh\n<\/code><\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>.\/extract_even_frames_webp.sh \u5165\u529b.mp4 \u51fa\u529b.webp\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306b\u3088\u308a\u3001\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u78ba\u8a8d\u307e\u305f\u306f\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb <code>ffmpeg<\/code><\/li>\n\n\n\n<li>\u5747\u7b49\u9593\u9694\u306e6\u3064\u306e\u30d5\u30ec\u30fc\u30e0\u3092\u62bd\u51fa\u3059\u308b<\/li>\n\n\n\n<li>\u751f\u6210\u3059\u308b <code>\u51fa\u529b.webp<\/code> \u5e45720\u30d4\u30af\u30bb\u30eb<\/li>\n<\/ul>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u30d5\u30ec\u30fc\u30e0\u6570\u3092\u6307\u5b9a\uff086\uff5e12\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>.\/extract_even_frames_webp.sh \u5165\u529b.mp4 \u51fa\u529b.webp 8\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u306e 6 \u30d5\u30ec\u30fc\u30e0\u3067\u306f\u306a\u304f 8 \u30d5\u30ec\u30fc\u30e0\u304c\u62bd\u51fa\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u3053\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u304c\u4fbf\u5229\u306a\u7406\u7531<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d3\u30c7\u30aa \u30a8\u30c7\u30a3\u30bf\u30fc\u3092\u624b\u52d5\u3067\u958b\u3044\u305f\u308a\u3001GUI \u30b3\u30f3\u30d0\u30fc\u30bf\u30fc\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u308a\u3059\u308b\u5834\u5408\u3068\u6bd4\u8f03\u3057\u3066\u3001\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u624b\u52d5\u8a2d\u5b9a\u4e0d\u8981<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u81ea\u52d5\u7684\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3059 <code>ffmpeg<\/code> \uff08\u5fc5\u8981\u306a\u5834\u5408\u306fHomebrew\u3082\uff09<\/li>\n\n\n\n<li>\u30a4\u30f3\u30b9\u30c8\u30fc\u30e9\u30fc\u3092\u63a2\u3057\u305f\u308a\u30b3\u30de\u30f3\u30c9\u3092\u899a\u3048\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30b9\u30de\u30fc\u30c8\u30d5\u30ec\u30fc\u30e0\u30b5\u30f3\u30d7\u30ea\u30f3\u30b0<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u77ed\u3044\u30af\u30ea\u30c3\u30d7\u306e\u5834\u5408\u306f\u3001\u30d5\u30ec\u30fc\u30e0\u6570\u3092\u81ea\u52d5\u7684\u306b\u6e1b\u3089\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u9577\u3044\u52d5\u753b\u306e\u5834\u5408\u3001\u30d5\u30ec\u30fc\u30e0\u306f\u5e38\u306b\u518d\u751f\u6642\u9593\u5168\u4f53\u306b\u308f\u305f\u3063\u3066\u5747\u7b49\u306b\u914d\u7f6e\u3055\u308c\u307e\u3059<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u54c1\u8cea\u3068\u30b5\u30a4\u30ba\u306e\u7ba1\u7406<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>-q:v<\/code> WebP\u306e\u54c1\u8cea\u3068\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u8abf\u6574\u3067\u304d\u307e\u3059<\/li>\n\n\n\n<li><code>\u30b9\u30b1\u30fc\u30eb=720:-1<\/code> \u30a6\u30a7\u30d6\u306b\u9069\u3057\u305f\u5e45\u3068\u4e00\u8cab\u3057\u305f\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\u3092\u5b9f\u73fe<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u30eb\u30fc\u30d7\u3059\u308b<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>-\u30eb\u30fc\u30d70<\/code> WebP\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u6c38\u4e45\u306b\u30eb\u30fc\u30d7\u3055\u305b\u308b<\/li>\n\n\n\n<li>\u30d7\u30ec\u30d3\u30e5\u30fc\u3001\u30c7\u30e2\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u30b5\u30a4\u30c8\u4e0a\u306e\u5fae\u5999\u306a\u52d5\u304d\u306b\u6700\u9069<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30af\u30ea\u30fc\u30f3\u30c7\u30a3\u30b9\u30af\u306e\u4f7f\u7528<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u4e00\u6642\u7684\u306aPNG\u30d5\u30ec\u30fc\u30e0\u306f\u4e00\u6642\u30d5\u30a9\u30eb\u30c0\u306b\u4fdd\u5b58\u3055\u308c\u3001\u305d\u306e\u5f8c\u524a\u9664\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u6b8b\u3063\u305f\u30d5\u30a1\u30a4\u30eb\u304c\u84c4\u7a4d\u3055\u308c\u308b\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. \u4f8b: 20\u79d2\u306eMP4\u3092WebP\u30d7\u30ec\u30d3\u30e5\u30fc\u306b\u5909\u63db\u3059\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u60f3\u50cf\u3057\u3066\u307f\u3066\u307b\u3057\u3044\u3002 <strong>20\u79d2\u306e\u6a5f\u80fd\u30c7\u30e2\u30d3\u30c7\u30aa<\/strong> \u305d\u3057\u3066\u5b9f\u884c\u3057\u307e\u3059:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.\/extract_even_frames_webp.sh \u30c7\u30e2.mp4 \u30c7\u30e2\u30d7\u30ec\u30d3\u30e5\u30fc.webp 6\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u6b21\u306e\u3053\u3068\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7d04\u306e\u9593\u9694\u3092\u8a08\u7b97\u3057\u307e\u3059 <strong>3.33\u79d2<\/strong><\/li>\n\n\n\n<li>6\u30d5\u30ec\u30fc\u30e0\u3092\u62bd\u51fa <code>0\u79d2\u30013.33\u79d2\u30016.66\u79d2\u300110\u79d2\u300113.33\u79d2\u300116.66\u79d2<\/code><\/li>\n\n\n\n<li>\u5e45\u3092720\u30d4\u30af\u30bb\u30eb\u306b\u30b5\u30a4\u30ba\u5909\u66f4\u3057\u307e\u3059<\/li>\n\n\n\n<li>\u69cb\u7bc9\u3059\u308b <strong>\u30eb\u30fc\u30d7\u3059\u308bWebP<\/strong> \u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306b\u3001\u3053\u306e WebP \u3092\u6b21\u306e\u5834\u6240\u306b\u30c9\u30ed\u30c3\u30d7\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u88fd\u54c1\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u307e\u305f\u306fFeishu \/ Notion\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3068\u3057\u3066 <strong>\u8efd\u91cf\u30d7\u30ec\u30d3\u30e5\u30fc<\/strong><\/li>\n\n\n\n<li>\u30bd\u30fc\u30b7\u30e3\u30eb\u6295\u7a3f\u3084\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u30da\u30fc\u30b8\u3068\u3057\u3066 <strong>\u81ea\u52d5\u518d\u751f\u30e2\u30fc\u30b7\u30e7\u30f3\u30b5\u30e0\u30cd\u30a4\u30eb<\/strong><\/li>\n\n\n\n<li>\u5b8c\u5168\u306a\u30d3\u30c7\u30aa\u3067\u306f\u5927\u304d\u3059\u304e\u308bPPT\u30c7\u30c3\u30ad\u3084\u793e\u5185\u30c7\u30e2<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. \u62e1\u5f35\u306e\u30a2\u30a4\u30c7\u30a2<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u51fa\u767a\u70b9\u3067\u3042\u308a\u3001\u72ec\u81ea\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u5408\u308f\u305b\u3066\u7c21\u5358\u306b\u8abf\u6574\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30c0\u30a4\u30ca\u30df\u30c3\u30af\u30d5\u30ec\u30fc\u30e0\u30ab\u30a6\u30f3\u30c8<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u52d5\u753b\u306e\u9577\u3055\u306b\u5fdc\u3058\u30666\uff5e12\u30d5\u30ec\u30fc\u30e0\u3092\u81ea\u52d5\u7684\u306b\u9078\u629e<\/li>\n\n\n\n<li>\u4f8b\u3048\u3070\u3001\u3088\u308a\u591a\u304f\u306e\u72b6\u614b\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306b\u3001\u3088\u308a\u9577\u3044\u30af\u30ea\u30c3\u30d7\u306b\u306f\u3088\u308a\u591a\u304f\u306e\u30d5\u30ec\u30fc\u30e0\u304c\u5fc5\u8981\u3067\u3059<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30ab\u30b9\u30bf\u30e0\u30b5\u30a4\u30ba<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5909\u5316 <code>\u30b9\u30b1\u30fc\u30eb=720:-1<\/code> \u88fd\u54c1\u30c1\u30fc\u30e0\u304c\u597d\u3080\u4efb\u610f\u306e\u5e45\u306b<\/li>\n\n\n\n<li>\u307e\u305f\u306f\u3001\u5e45\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u516c\u958b\u3057\u307e\u3059\u3002 <code>.\/script.sh \u5165\u529b.mp4 \u51fa\u529b.webp 8 1080<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30d0\u30c3\u30c1\u51e6\u7406<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5225\u306e\u30eb\u30fc\u30d7\u3067\u30e9\u30c3\u30d7\u3057\u3066\u3001\u3059\u3079\u3066\u3092\u51e6\u7406\u3057\u307e\u3059\u3002 <code>.mp4<\/code> \u30d5\u30a9\u30eb\u30c0\u5185\u306e\u30d5\u30a1\u30a4\u30eb<\/li>\n\n\n\n<li>\u6a5f\u80fd\u30c7\u30e2\u3092\u4e00\u62ec\u3057\u3066\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u3068\u304d\u306b\u4fbf\u5229\u3067\u3059<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8457\u8005\u30ce\u30fc\u30c8<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u3001MP4\u52d5\u753b\u3092\u8efd\u91cf\u306aWebP\u30d7\u30ec\u30d3\u30e5\u30fc\u306b\u5909\u63db\u3059\u308b\u79c1\u306e\u5b9f\u969b\u306emacOS\u958b\u767a\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u304b\u3089\u751f\u307e\u308c\u307e\u3057\u305f\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u958b\u767a\u3067\u306f\u3001\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3084\u30bd\u30fc\u30b7\u30e3\u30eb\u30e1\u30c7\u30a3\u30a2\u6295\u7a3f\u7528\u306e\u30c7\u30e2\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306b\u3001\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u65e5\u3005\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002GPT\u306f\u3001\u3053\u306e\u8a18\u4e8b\u306e\u82f1\u8a9e\u7248\u306e\u7ffb\u8a33\u3001\u69cb\u6210\u3001\u304a\u3088\u3073\u4fee\u6b63\u306b\u306e\u307f\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u30ed\u30b8\u30c3\u30af\u3001\u5b9f\u88c5\u306e\u8a73\u7d30\u3001\u4f7f\u7528\u30d1\u30bf\u30fc\u30f3\u306f\u3059\u3079\u3066\u3001\u79c1\u81ea\u8eab\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u7d4c\u9a13\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>For client and app development work, I often need to visualize video content quickly: In these cases, extracting a few key frames from an MP4 and turning them into a looping WebP animation is usually enough\u2014and much lighter than uploading a full video. This article shares a one-click shell script for macOS that: All of this runs from a single command in Terminal. 1. What the script does On macOS, the script extract_even_frames_webp.sh provides: 2. How it works under the hood Here\u2019s the basic logic behind the script. 2.1 Check dependencies The script first checks whether ffmpeg is installed: 2.2 Retrieve video duration Using ffprobe, the script reads the total [&hellip;]<\/p>","protected":false},"author":8,"featured_media":4877,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_title":"MP4 to WebP on macOS: One-Click ffmpeg Script Guide","rank_math_description":"Use a one-click macOS shell script with ffmpeg to convert MP4 to looping WebP animations, with auto-install, even frame extraction and clean temp files.","footnotes":""},"categories":[35],"tags":[],"class_list":["post-4875","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge-hub"],"_links":{"self":[{"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/posts\/4875","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/comments?post=4875"}],"version-history":[{"count":2,"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/posts\/4875\/revisions"}],"predecessor-version":[{"id":4878,"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/posts\/4875\/revisions\/4878"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/media\/4877"}],"wp:attachment":[{"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/media?parent=4875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/categories?post=4875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/imastudio.com\/ja\/wp-json\/wp\/v2\/tags?post=4875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}