Delete the same selection in all the layers of a stack

[360 virtual tour]

Hi All, it is maybe stupid, but it doesn't work even when all the layers are selected. the thing i want to do is to delete a selection, the same one, in all the layers, in one process. of course, i can do it one layer by one layer, but i work on stack of 400 layers, acquire from video, so, if you have an answer, i will be very happy.
here is a screen of my board:

a last thing, i'm new in this forum, i'm a french photographer in France, specialized in virtual tours, if you want to see my work, you are welcome , it's here : gabrielacoca.fr

 

[Hoogle]

highlight all the layers in the layer panel and press control + G this will group them then draw out your selection and click apply layer mask or use the eraser tool or delete

 

[360 virtual tour]

Hi Hoogle, and thank you for your reply, i have try this method before, but it doesn't work, photoshop ask to merge the layers before as you can see: the error message is: could not clear because the pixel in a group cannot be edited without merging the group. If you have an other idea ;-) but thanks again.

 

[360 virtual tour]

But this work when apply a mask … Thank you HOOGLE ;-)

 

[360 virtual tour]

Euh , sorry, no , it's not working … in fact, it's apply the same mask to all the layers at the same position, that is ok, but after, i need to move the layers, and in this case, it's not working because i have the same mask for all the layer , so i need to apply the mask to all the layers before moving them, i have seen that in blending options it's not possible, maybe i try with dynamic layer, but if someone have an idea ...

 

[360 virtual tour]

In fact, my new question is how to apply the mask to all the layer without merging them ..

 

[Hoogle]

not got it loaded up at the moment to test my theory but you can probably convert all the layers to a smart object and then just apply 1 mask to the smart object, when you open up the smart object your layers will still be in tact.

failing that you can just mask 1 then hold the alt key down and drag the layer mask to all layers or do a batch process of applying the sm=ame layer mask to each layer

 

[360 virtual tour]

Hi Hoogle, and thank again … i will try your theory tomorrow morning, because here in France it's 1 AM, and i was shutting down … i will tell you tomorrow, good night .