This has happened to me a few times, I've tried several tutorials to no avail. During basic editing., I have never went into settings to change anything, The video simply turns to black. this also transfers to rendering and transferring to another version. if I try to load another project in which this has not happened,. All is well. However when I go back to a corrupted one there is still nothing. everything I look up only tells me to change the setting to what they already are. Any ideas?