【中文说明】用于检查 SRT 或 WebVTT 字幕的时间轴、编号、阅读速度、行长和标签问题，并修订异常片段。粘贴或上传字幕文件，提供每秒字符数、行数与显示时长标准；如需整体平移时间轴，再注明偏移量。 Checks SRT and WebVTT subtitle files for broken or overlapping timings, numbering gaps, empty cues, reading speed above a characters-per-second limit, long or extra lines, cues that flash by or linger, unbalanced tags, and sound labels, then rewrites and retimes the problem cues and can shift the whole file. Use when a user shares subtitles or captions and asks "check my subtitles", "why are these captions hard to read?", "fix the timing", or "make these subtitles follow the guidelines".
