Black video/ empty timeline warning
Many users have a placed a clip far away in the end of the timeline, then, at the end of the day, rush to render their video so that it is ready the next morning, without checking if the duration matches their edit, only to realize, the next morning, that they exported many minutes of empty timeline area.
If no noise is recorded, and no pixel is rendered for a few seconds at the end of a video before another clip, a warning would be useful. of course, for those creating hidden track like in the old time of the CDs, a do not show again might be useful :-°
Thank you in advance!

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Andrew commented
This would help me out too, I've made that mistake a few times before.
@Jim Simon computers allow us to automate tasks and make our lives easier, so why not take advantage of that? One's ability to pay attention at the end of a long day is weakened so if a feature can help in that situation then it's a good idea.
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Jim Simon commented
Paying attention is the best 'solution' to this problem.