I have a question about Einstein's general relativity

So i read about the general relativity and in short if a vehicle was moving in a high speed and had a synced clocks with the crew on the ground , the clock on the space ship will report a 123hrs flight for example and the crew on the ground will have for example 135hrs , so the question is if the could stream the whole flight while having a copy of the stream on the device streaming on the rocket and the device receiving the stream ? What will the stream be a 123hrs stream or a 135hrs stream ????🤔🤔