London Banter - View Single Post - C5 Fare Dodgers

Roland Perry · October 23rd 19, 08:00 PM posted to uk.transport.london

In message , at 19:05:11 on Wed, 23 Oct
2019, remarked:
On Wed, 23 Oct 2019 09:34:49 +0100
Roland Perry wrote:
In message , at 07:41:34 on Wed, 23 Oct
2019, remarked:

I wonder if dashcams storing low/uncompressed video is so it can accurately
capture very fast movement - eg just before an accident - which most video
compression systems are not particularly good at.

I think it's because they don't want to have the silicon|dollars|power
budget of compressing the video. They externalise it to users having to
buy stupidly big SD cards.

My previous dashcam gobbled through 1.2GB for each ten minute file.

There must be more to it than that. Even cheap smartphones can do realtime
video compression.

They produce files in MP4 format, but not very much compressed. My phone
produces typically 150MB per minute (1920 x 1080 pixels).

The hardware is probably commodity by now.

My whole dashcam only cost about £30.
--
Roland Perry