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The feeds were identical throughout the flight. It was definitely recorded from the same booster. At booster separation you can clearly see the shoreline. If it was the camera view from the other booster the background would be rotated by 180°, which it wasn't:

Also the RCS puffs happened at the exact same time, which is highly unlikely as the boosters have to make their own individual corrections:

Note that the frames (timing) and viewport are not identical, but this is most likely a side-effect of rendering them into one video.

Update: SpaceX has uploaded an edited version of the video, now correctly showing the feeds from both boosters:

The feeds were identical throughout the flight. It was definitely recorded from the same booster. At booster separation you can clearly see the shoreline. If it was the camera view from the other booster the background would be rotated by 180°, which it wasn't:

Also the RCS puffs happened at the exact same time, which is highly unlikely as the boosters have to make their own individual corrections:

Note that the frames (timing) and viewport are not identical, but this is most likely a side-effect of rendering them into one video.

Update: SpaceX has uploaded an edited version of the video, now correctly showing the feeds from both boosters:  

The feeds were identical throughout the flight. It was definitely recorded from the same booster. At booster separation you can clearly see the shoreline. If it was the camera view from the other booster the background would be rotated by 180°, which it wasn't:

Also the RCS puffs happened at the exact same time, which is highly unlikely as the boosters have to make their own individual corrections:

Note that the frames (timing) and viewport are not identical, but this is most likely a side-effect of rendering them into one video.

The feeds were identical throughout the flight. It was definitely recorded from the same booster. At booster separation you can clearly see the shoreline. If it was the camera view from the other booster the background would be rotated by 180°, which it wasn't:

Also the RCS puffs happened at the exact same time, which is highly unlikely as the boosters have to make their own individual corrections:

Note that the frames (timing) and viewport are not identical, but this is most likely a side-effect of rendering them into one video.

Update: SpaceX has uploaded an edited version of the video, now correctly showing the feeds from both boosters:

The feeds were identical throughout the flight. It was definitely recorded from the same booster. At booster separation you can clearly see the shoreline. If it was the camera view from the other booster the background would be rotated by 180°, which it wasn't:

Also the RCS puffs happened at the exact same time, which is highly unlikely as the boosters have to make their own individual corrections:

But note that the frames (timing) and viewport were not identical, which is most likely a side-effect of rendering them into one video.

The feeds were identical throughout the flight. It was definitely recorded from the same booster. At booster separation you can clearly see the shoreline. If it was the camera view from the other booster the background would be rotated by 180°, which it wasn't:

Also the RCS puffs happened at the exact same time, which is highly unlikely as the boosters have to make their own individual corrections:

Note that the frames (timing) and viewport are not identical, but this is most likely a side-effect of rendering them into one video.