Eburacum
Senior Member.
I found a couple of places in a larger satellite image that look similar to the plane vid
Note that the thin altostratus or cirrostratus in that image is above the cumulus, and partially obscures it. In the plane vid the cumulus seems to cast shadows on the cirrus, which should not be possible if the photo is taken from above.
One possible explanation for this is that the cloud image shows deep shadows beneath the cumulus onto the ocean, which lowers the total brightness of the image in those regions and makes the cirrus disappear due to a contrast effect. This suggests the cloud texture is heavily processed, which does seem to be the case.
Another possible explanation is that the thin, veil-like cloud is below the cumulus, and is in fact low-level stratus just above the ocean surface. But it looks too streaky for that.
Another possible explanation is that this image was taken from below, from ground level or a low-level plane, and the 'shadows' of the cumulus are in fact the non-illuminated portions of those clouds, which obscure the cirrus behind. Whatever the reason, these do not look like typical satellite cloud images.