It does. MPEG(MPEG-1/2)是DVD和广播线路:强健和普遍可脱污,但效率远低于H264。. That is precisely what decides whether a cut can be placed arbitrarily or has to land on a structural boundary.
修剪时有什么具体关于 MPEG 的具体信息吗?
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Yes — MPEG-1/2 使用程序流而不是现代索引,因此,削减与GOP的界限一致,除非图像重新编码. It explains most of the "the cut is a fraction of a second off" surprises.