Does bluetooth reduces video/sound quality?

[TheFlash1300]

Hello. If i send videos from a laptop to a smartphone, via Bluetooth, will this lead to a loss of video and sound quality? If Bluetooth has a narrow bandwidth, does that mean files transferred via Bluetooth need to be very compressed in order to pass to the other device, meaning quality loss is inevitable?

Is there a way to make the transferred file to have the same quality as the original file, meaning the files must not have any quality loss, and they must be 100% identical to the original files?

 

[Rogue Leader]

Hello. If i send videos from a laptop to a smartphone, via Bluetooth, will this lead to a loss of video and sound quality? If Bluetooth has a narrow bandwidth, does that mean files transferred via Bluetooth need to be very compressed in order to pass to the other device, meaning quality loss is inevitable?

Is there a way to make the transferred file to have the same quality as the original file, meaning the files must not have any quality loss, and they must be 100% identical to the original files?

File transfer should not compress the file or change it. File streaming does result in compression (like streaming music) however newer devices support newer protocols to reduce or almost eliminate that type of streaming.

That said Bluetooth file transfer is pretty slow, but it does work.

 

[TheFlash1300]

File transfer should not compress the file or change it. File streaming does result in compression (like streaming music) however newer devices support newer protocols to reduce or almost eliminate that type of streaming.

That said Bluetooth file transfer is pretty slow, but it does work.

So, Bluetooth doesn't reduce video and sound quality?

 

[hotaru.hino]

If you are copying the files from one device to another, then no. Bluetooth does not reduce the quality of anything in this use case.

If you are streaming the media, then yes.

 

[Rogue Leader]

So, Bluetooth doesn't reduce video and sound quality?

Not if you are just copying a file. If you're streaming then yes it does.

 

[digitalgriffin]

So, Bluetooth doesn't reduce video and sound quality?

Yes and no. If it's a straight file transfer then no. If you are somehow streaming live video data over the connection and there is an issue where the data stream can't keep up, then the program will often compress to a lower bitrate. ie: If my wife has connection issues using Zoom, the video/audio quality will drop.

Bluetooth uses various compression protocols for live audio streams. But the client has to support that codec, including aptX. But Bluetooth simply doesn't have the bandwidth for uncompressed stereo CD Redbook audio. So aptX is a recompression scheme like mp3 is a compression scheme. Will you be able to tell the difference? Highly doubtful unless you are young and have an incredibly expensive audio setup in a tuned room. In a double blind study on compressed audio, people < 25 years old could guess correctly 53% of the time which is compressed after listening to the uncompressed original (redbook format 16bit stereo 44K). So basically a 3% difference. When they were NOT presented the original source immediately beforehand it was well within statistical error. (Which made it a crap shoot guess) They sampled across a variety of music for each sitter.

BTW: bluetooth and wifi gaming headsets often do suffer from quality issues compared to their wired counterparts when it comes to mics. The mics are just horrid. It's a design choice. You'll see any experienced youtuber say the same thing. Headset wireless condenser mics are just awful. I don't know if it's a bandwidth/latency/energy usage issue, or a physical one like quality of condenser mic.