When I toggle into full-screen mode on Netfix, eliminating the side bars, the video zooms in and often crops off the tops of characters' heads, which is annoying.
On Amazon Prime video, the behavior is much better. The non-full-screen mode has (very thin) black bars at the top and bottom, not at the sides. When I toggle into full-screen mode, the video zooms in slightly to eliminate the top and bottom bars, thereby cropping a (very thin) sliver from the right and left edge of the screen, which isn't really noticeable.
The Amazon Prime behavior is what should happen when the original recording is in full 4k or 8k, as professional video has been for years. The non-full-screen mode is displaying the full 4k field of view, with black bars at the top and bottom because of the slightly different aspect ratio. The S8's aspect ratio is much closer to the 4k aspect ratio than the 16:9 ratio is.
But with Netflix, the non-full-screen view has already been cropped (on the sides) from 4k to a 16:9 aspect ratio, which is incorrect for the S8 and S8+. Then, zooming in with full-screen mode, the already-side-cropped view is cropped again on the top and bottom.
This difference may be why Netflix, unlike Prime Video, is listed in the Full Screen Apps settings as incompatible with full-screen mode (but you can still enable full-screen mode there). Hopefully Netflix will catch up soon and stream properly to the S8.
One caveat: I compared different content on Netflix vs. Prime Video, so it's possible that the different full-screen behavior was due to the content rather than the platform (though the content was recent in both cases, so probably originally 4k or 8k). If anyone has more definitive information, it'd be appreciated.
On Amazon Prime video, the behavior is much better. The non-full-screen mode has (very thin) black bars at the top and bottom, not at the sides. When I toggle into full-screen mode, the video zooms in slightly to eliminate the top and bottom bars, thereby cropping a (very thin) sliver from the right and left edge of the screen, which isn't really noticeable.
The Amazon Prime behavior is what should happen when the original recording is in full 4k or 8k, as professional video has been for years. The non-full-screen mode is displaying the full 4k field of view, with black bars at the top and bottom because of the slightly different aspect ratio. The S8's aspect ratio is much closer to the 4k aspect ratio than the 16:9 ratio is.
But with Netflix, the non-full-screen view has already been cropped (on the sides) from 4k to a 16:9 aspect ratio, which is incorrect for the S8 and S8+. Then, zooming in with full-screen mode, the already-side-cropped view is cropped again on the top and bottom.
This difference may be why Netflix, unlike Prime Video, is listed in the Full Screen Apps settings as incompatible with full-screen mode (but you can still enable full-screen mode there). Hopefully Netflix will catch up soon and stream properly to the S8.
One caveat: I compared different content on Netflix vs. Prime Video, so it's possible that the different full-screen behavior was due to the content rather than the platform (though the content was recent in both cases, so probably originally 4k or 8k). If anyone has more definitive information, it'd be appreciated.