It does. MPG 是短扩展的同一 MPEG-1/2 程序流, 仍然是 DVD- 时代抓取的格式. 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 MPG 的具体信息吗?
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Yes — a.mpg 与.mpeg 相同的程序流, 两者都是DVD- 时代捕获硬件的, 内嵌的硬体仍然被烤熟。. It explains most of the "the cut is a fraction of a second off" surprises.