[{"data":1,"prerenderedAt":56},["ShallowReactive",2],{"i-lucide:menu":3,"i-lucide:grip":8,"i-lucide:chevron-right":10,"i-lucide:moon":12,"i-lucide:sun":14,"i-material-symbols:language":16,"i-lucide:chevron-down":18,"i-lucide:shield-check":20,"i-lucide:mail":22,"i-tabler:markdown":24,"i-lucide:code-xml":26,"i-lucide:film":28,"i-lucide:file-text":30,"i-lucide:box":32,"i-lucide:code-2":34,"i-lucide:image":35,"i-lucide:square-sigma":37,"i-lucide:gamepad-2":39,"i-lucide:sparkles":41,"i-lucide:graduation-cap":43,"blog-body-fix-out-of-sync-subtitles-en":45,"i-lucide:lightbulb":46,"i-lucide:clapperboard":48,"i-lucide:timer-reset":50,"i-lucide:captions":52,"i-tabler:transform":54},{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":7},0,24,false,"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M4 5h16M4 12h16M4 19h16\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":9},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Ccircle cx=\"12\" cy=\"5\" r=\"1\"\u002F>\u003Ccircle cx=\"19\" cy=\"5\" r=\"1\"\u002F>\u003Ccircle cx=\"5\" cy=\"5\" r=\"1\"\u002F>\u003Ccircle cx=\"12\" cy=\"12\" r=\"1\"\u002F>\u003Ccircle cx=\"19\" cy=\"12\" r=\"1\"\u002F>\u003Ccircle cx=\"5\" cy=\"12\" r=\"1\"\u002F>\u003Ccircle cx=\"12\" cy=\"19\" r=\"1\"\u002F>\u003Ccircle cx=\"19\" cy=\"19\" r=\"1\"\u002F>\u003Ccircle cx=\"5\" cy=\"19\" r=\"1\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":11},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"m9 18l6-6l-6-6\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":13},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M20.985 12.486a9 9 0 1 1-9.473-9.472c.405-.022.617.46.402.803a6 6 0 0 0 8.268 8.268c.344-.215.825-.004.803.401\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":15},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Ccircle cx=\"12\" cy=\"12\" r=\"4\"\u002F>\u003Cpath d=\"M12 2v2m0 16v2M4.93 4.93l1.41 1.41m11.32 11.32l1.41 1.41M2 12h2m16 0h2M6.34 17.66l-1.41 1.41M19.07 4.93l-1.41 1.41\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":17},"\u003Cpath fill=\"currentColor\" d=\"M8.125 21.213q-1.825-.788-3.187-2.15t-2.15-3.188T2 11.988t.788-3.875t2.15-3.175t3.187-2.15T12.013 2t3.875.788t3.175 2.15t2.15 3.175t.787 3.875t-.787 3.887t-2.15 3.188t-3.175 2.15t-3.875.787t-3.888-.787M12 19.95q.65-.9 1.125-1.875T13.9 16h-3.8q.3 1.1.775 2.075T12 19.95m-2.6-.4q-.45-.825-.787-1.713T8.05 16H5.1q.725 1.25 1.813 2.175T9.4 19.55m5.2 0q1.4-.45 2.488-1.375T18.9 16h-2.95q-.225.95-.562 1.838T14.6 19.55M4.25 14h3.4q-.075-.5-.112-.987T7.5 12t.038-1.012T7.65 10h-3.4q-.125.5-.187.988T4 12t.063 1.013t.187.987m5.4 0h4.7q.075-.5.113-.987T14.5 12t-.038-1.012T14.35 10h-4.7q-.075.5-.112.988T9.5 12t.038 1.013t.112.987m6.7 0h3.4q.125-.5.188-.987T20 12t-.062-1.012T19.75 10h-3.4q.075.5.113.988T16.5 12t-.038 1.013t-.112.987m-.4-6h2.95q-.725-1.25-1.812-2.175T14.6 4.45q.45.825.788 1.713T15.95 8M10.1 8h3.8q-.3-1.1-.775-2.075T12 4.05q-.65.9-1.125 1.875T10.1 8m-5 0h2.95q.225-.95.563-1.838T9.4 4.45Q8 4.9 6.912 5.825T5.1 8\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":19},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"m6 9l6 6l6-6\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":21},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z\"\u002F>\u003Cpath d=\"m9 12l2 2l4-4\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":23},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"m22 7l-8.991 5.727a2 2 0 0 1-2.009 0L2 7\"\u002F>\u003Crect width=\"20\" height=\"16\" x=\"2\" y=\"4\" rx=\"2\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":25},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M3 7a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2v10a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z\"\u002F>\u003Cpath d=\"M7 15V9l2 2l2-2v6m3-2l2 2l2-2m-2 2V9\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":27},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"m18 16l4-4l-4-4M6 8l-4 4l4 4m8.5-12l-5 16\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":29},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Crect width=\"18\" height=\"18\" x=\"3\" y=\"3\" rx=\"2\"\u002F>\u003Cpath d=\"M7 3v18M3 7.5h4M3 12h18M3 16.5h4M17 3v18m0-13.5h4m-4 9h4\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":31},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M6 22a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h8a2.4 2.4 0 0 1 1.704.706l3.588 3.588A2.4 2.4 0 0 1 20 8v12a2 2 0 0 1-2 2z\"\u002F>\u003Cpath d=\"M14 2v5a1 1 0 0 0 1 1h5M10 9H8m8 4H8m8 4H8\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":33},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M21 8a2 2 0 0 0-1-1.73l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.73l7 4a2 2 0 0 0 2 0l7-4A2 2 0 0 0 21 16Z\"\u002F>\u003Cpath d=\"m3.3 7l8.7 5l8.7-5M12 22V12\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":27},{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":36},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Crect width=\"18\" height=\"18\" x=\"3\" y=\"3\" rx=\"2\" ry=\"2\"\u002F>\u003Ccircle cx=\"9\" cy=\"9\" r=\"2\"\u002F>\u003Cpath d=\"m21 15l-3.086-3.086a2 2 0 0 0-2.828 0L6 21\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":38},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Crect width=\"18\" height=\"18\" x=\"3\" y=\"3\" rx=\"2\"\u002F>\u003Cpath d=\"M16 8.9V7H8l4 5l-4 5h8v-1.9\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":40},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M6 11h4M8 9v4m7-1h.01M18 10h.01m-.69-5H6.68a4 4 0 0 0-3.978 3.59l-.017.152C2.604 9.416 2 14.456 2 16a3 3 0 0 0 3 3c1 0 1.5-.5 2-1l1.414-1.414A2 2 0 0 1 9.828 16h4.344a2 2 0 0 1 1.414.586L17 18c.5.5 1 1 2 1a3 3 0 0 0 3-3c0-1.545-.604-6.584-.685-7.258q-.01-.075-.017-.151A4 4 0 0 0 17.32 5\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":42},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M11.017 2.814a1 1 0 0 1 1.966 0l1.051 5.558a2 2 0 0 0 1.594 1.594l5.558 1.051a1 1 0 0 1 0 1.966l-5.558 1.051a2 2 0 0 0-1.594 1.594l-1.051 5.558a1 1 0 0 1-1.966 0l-1.051-5.558a2 2 0 0 0-1.594-1.594l-5.558-1.051a1 1 0 0 1 0-1.966l5.558-1.051a2 2 0 0 0 1.594-1.594zM20 2v4m2-2h-4\"\u002F>\u003Ccircle cx=\"4\" cy=\"20\" r=\"2\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":44},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M21.42 10.922a1 1 0 0 0-.019-1.838L12.83 5.18a2 2 0 0 0-1.66 0L2.6 9.08a1 1 0 0 0 0 1.832l8.57 3.908a2 2 0 0 0 1.66 0zM22 10v6\"\u002F>\u003Cpath d=\"M6 12.5V16a6 3 0 0 0 12 0v-3.5\"\u002F>\u003C\u002Fg>","\u003Cblockquote>\n\u003Cp>Same video, same subtitle file—some people see "uniformly half a beat late," others "fine at start, off by seconds at the end." They look like one problem but have different causes and fixes. Step one isn't editing—\u003Cstrong>identify which kind of desync you have\u003C\u002Fstrong>.\u003C\u002Fp>\n\u003C\u002Fblockquote>\n\u003Cp>\u003Cimg src=\"\u002Fblog\u002Ffix-out-of-sync-subtitles\u002Fcover.webp\" alt=\"Subtitle desync: fixed offset vs. linear drift\">\u003C\u002Fp>\n\u003Ch2>Subtitle Desync Comes in Three Types\u003C\u002Fh2>\n\u003Cp>Key conclusion first: \u003Cstrong>fixed offset, linear drift, and frame-rate conversion\u003C\u002Fstrong>—tell them apart by whether error is constant or growing.\u003C\u002Fp>\n\u003Ctable>\n\u003Cthead>\n\u003Ctr>\n\u003Cth>Type\u003C\u002Fth>\n\u003Cth>Symptom\u003C\u002Fth>\n\u003Cth>Cause\u003C\u002Fth>\n\u003Cth>Fix\u003C\u002Fth>\n\u003C\u002Ftr>\n\u003C\u002Fthead>\n\u003Ctbody>\n\u003Ctr>\n\u003Ctd>Fixed offset\u003C\u002Ftd>\n\u003Ctd>Same seconds late\u002Fearly throughout\u003C\u002Ftd>\n\u003Ctd>Subtitle start misaligned with video\u003C\u002Ftd>\n\u003Ctd>Shift all cues ±N ms\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>Linear drift\u003C\u002Ftd>\n\u003Ctd>Accurate at start, worse toward end\u003C\u002Ftd>\n\u003Ctd>Frame rate \u002F time base mismatch\u003C\u002Ftd>\n\u003Ctd>Linear stretch from two anchor points\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003Ctr>\n\u003Ctd>Frame-rate conversion\u003C\u002Ftd>\n\u003Ctd>Offset grows by fixed ratio (~4%)\u003C\u002Ftd>\n\u003Ctd>25 fps vs 23.976 fps, etc.\u003C\u002Ftd>\n\u003Ctd>Scale times by frame-rate ratio\u003C\u002Ftd>\n\u003C\u002Ftr>\n\u003C\u002Ftbody>\n\u003C\u002Ftable>\n\u003Cp>Two-step diagnosis: check one cue at the start and one at the end. \u003Cstrong>Same error start and end → fixed offset; end worse than start → linear drift \u002F frame rate.\u003C\u002Fstrong> Right diagnosis saves wasted effort.\u003C\u002Fp>\n\u003Ch2>Fixed Offset: Uniformly Late Is Easiest\u003C\u002Fh2>\n\u003Cp>If every cue is consistently \u003Cstrong>the same number of seconds\u003C\u002Fstrong> late (or early) vs. audio, that's fixed offset—most common and simplest. Usually the subtitle timeline and video start don't align—extra intro on the video, or subtitles from another release.\u003C\u002Fp>\n\u003Cp>Fix: \u003Cstrong>shift all times\u003C\u002Fstrong>. Measure one line—e.g. subtitle 2.3 s late—and subtract 2300 ms from every cue. The \u003Ca href=\"\u002Fvideos\u002FsubtitleSync\u002F\">subtitle sync tool\u003C\u002Fa> takes an offset and shifts the whole file at once. Sign: subtitles \u003Cstrong>late\u003C\u002Fstrong> → subtract (shift earlier); \u003Cstrong>early\u003C\u002Fstrong> → add (shift later).\u003C\u002Fp>\n\u003Ch2>Linear Drift: Getting Worse Over Time\u003C\u002Fh2>\n\u003Cp>If the first few lines match but drift grows, that's \u003Cstrong>linear drift\u003C\u002Fstrong>—subtitle and video "run at different speeds," error accumulates. Uniform shift can't fix it; fixing one section breaks another.\u003C\u002Fp>\n\u003Cp>Fix: \u003Cstrong>two-point linear stretch\u003C\u002Fstrong>. Pin the first cue and last cue to correct times; redistribute everything in between proportionally. The \u003Ca href=\"\u002Fvideos\u002FsubtitleSync\u002F\">subtitle sync tool\u003C\u002Fa> has a linear stretch mode—enter correct start and end times for first and last subtitles; middle cues adjust automatically.\u003C\u002Fp>\n\u003Ch2>Frame-Rate Conversion: Fixed Percentage Drift\u003C\u002Fh2>\n\u003Cp>Linear drift often comes from \u003Cstrong>frame-rate mismatch\u003C\u002Fstrong>—e.g. 25 fps (PAL) subtitles on 23.976 fps (NTSC\u002Ffilm) video. Duration scales by a fixed ratio; offset grows ~4% over time.\u003C\u002Fp>\n\u003Cp>If you know both frame rates, \u003Cstrong>scale all times by the ratio\u003C\u002Fstrong>—more precise than manual end anchors. Suspect frame rate when drift is proportional: later = more offset, roughly constant percentage.\u003C\u002Fp>\n\u003Ch2>Need to Edit Text or Split Lines Too?\u003C\u002Fh2>\n\u003Cp>Sometimes you also fix typos, split long lines, or tweak individual cue times. \u003Cstrong>Per-cue editing\u003C\u002Fstrong> isn't what bulk sync tools do—you need a visual timeline.\u003C\u002Fp>\n\u003Cp>The \u003Ca href=\"\u002Fvideos\u002FsubtitleEdit\u002F\">subtitle editor\u003C\u002Fa> with live video preview lets you drag cues, edit text inline, split\u002Fmerge lines—best for spot fixes. Bulk shift\u002Fstretch in the sync tool; fine edits in the editor.\u003C\u002Fp>\n\u003Ch2>Player Doesn't Accept This Subtitle Format?\u003C\u002Fh2>\n\u003Cp>Sometimes "out of sync" is really \u003Cstrong>unsupported format\u003C\u002Fstrong>—player only takes VTT, you have SRT, so subtitles don't show or behave oddly. That's format, not timing.\u003C\u002Fp>\n\u003Cp>Use \u003Ca href=\"\u002Fvideos\u002FsubtitleConvert\u002F\">subtitle format conversion\u003C\u002Fa> among SRT, VTT, ASS, SBV, LRC—timing and text preserved; then fix timing as above.\u003C\u002Fp>\n\u003Ch2>Summary\u003C\u002Fh2>\n\u003Cp>Don't rush to edit—\u003Cstrong>identify the three types\u003C\u002Fstrong>: constant error = fixed offset, uniform shift; growing error = linear drift, two-point stretch; proportional error = frame-rate scale. Bulk work: \u003Ca href=\"\u002Fvideos\u002FsubtitleSync\u002F\">subtitle sync tool\u003C\u002Fa>; per-cue: \u003Ca href=\"\u002Fvideos\u002FsubtitleEdit\u002F\">subtitle editor\u003C\u002Fa>; wrong format: \u003Ca href=\"\u002Fvideos\u002FsubtitleConvert\u002F\">subtitle format conversion\u003C\u002Fa> first. Right diagnosis fixes subtitles in seconds—all locally in the browser, no upload.\u003C\u002Fp>\n",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":47},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M15 14c.2-1 .7-1.7 1.5-2.5c1-.9 1.5-2.2 1.5-3.5A6 6 0 0 0 6 8c0 1 .2 2.2 1.5 3.5c.7.7 1.3 1.5 1.5 2.5m0 4h6m-5 4h4\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":49},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"m12.296 3.464l3.02 3.956M20.2 6L3 11l-.9-2.4c-.3-1.1.3-2.2 1.3-2.5l13.5-4c1.1-.3 2.2.3 2.5 1.3zM3 11h18v8a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2zm3.18-5.724l3.1 3.899\"\u002F>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":51},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Cpath d=\"M10 2h4m-2 12v-4m-8 3a8 8 0 0 1 8-7a8 8 0 1 1-5.3 14L4 17.6\"\u002F>\u003Cpath d=\"M9 17H4v5\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":53},"\u003Cg fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\">\u003Crect width=\"18\" height=\"14\" x=\"3\" y=\"5\" rx=\"2\" ry=\"2\"\u002F>\u003Cpath d=\"M7 15h4m4 0h2M7 11h2m4 0h4\"\u002F>\u003C\u002Fg>",{"left":4,"top":4,"width":5,"height":5,"rotate":4,"vFlip":6,"hFlip":6,"body":55},"\u003Cpath fill=\"none\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M3 6a3 3 0 1 0 6 0a3 3 0 0 0-6 0m18 5V8a2 2 0 0 0-2-2h-6l3 3m0-6l-3 3M3 13v3a2 2 0 0 0 2 2h6l-3-3m0 6l3-3m4 0a3 3 0 1 0 6 0a3 3 0 0 0-6 0\"\u002F>",1782539672730]