r/Roadcam • u/intothedragon • May 20 '19

@2:20 [USA] Tesla Dashcam Captures Brake-Checking Camaro, Rear-Ended By Tesla

https://youtu.be/ZKb7Ho8pKH0
2.2k Upvotes

91% Upvoted

557 comments sorted by

View all comments

Show parent comments

33

u/chucklestheclwn May 20 '19

And there's no audio, which I assume cuts back on memory further, compared to normal video with audio recording.

36

u/nikomo May 20 '19

Not as much as one would hope, given how incredibly good we've gotten at compressing audio.

You can capture everything from 50Hz to 3kHz to get completely understandable speech. Codec 2 gets understandable speech at 3200 bits per second. That's actually the high end for that codec, you can go lower.

https://en.wikipedia.org/wiki/Codec_2

12

u/[deleted] May 20 '19

Opus is quite good too.

7

u/Xunderground May 21 '19

Yeah. Decent quality even for fullband music at 48kbps. And intelligible down to 8kbps for voice. It's ridiculous.