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This is true. Do you have a use case where being off by a few frames might be a deal breaker?

Personally I've created dozens of clips using this method and it always turns out ok. It gives you about ~1 second precision on where you want to make your cuts. After I create the clips I can play things back normally, complete with an ability to seek to specific points successfully.

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>> Do you have a use case where being off by a few frames might be a deal breaker?

Yes, in action recognition tasks (machine learning), e.g., if you have a large video with temporal annotations (start/end times where an action occurs) you may want to extract clips to sense-check the annotations. Being exact is important.

yeah it probably doesn't matter in practice. you may run into some audio sync issues.

but the ~1 second precision that you see is by accident where the source file happens to have a keyframe every 1 second. that may not be the case always. :)

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