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Dashcam advice please
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Kremmen
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Joined: Mar 03, 2006
Posts: 5447
Location: West London & Reading

PostPosted: Thu Nov 28, 2019 1:10 pm    Post subject: Reply with quote

Yes, this clip is 1440@30 but I think I had the bitrate set to medium instead of high, since corrected.

I'll post the link here once it's uploaded to Dropbox because it's not secret.

https://www.dropbox.com/s/dph7x5p6tdabhzd/Kremmen%20Viofo%20A119%20V3%20Sample.MP4?dl=1
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Satnav:
Garmin DS61 LMT-D (In the car)
Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
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Privateer
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Joined: 30/12/2002 17:36:20
Posts: 4742
Location: Oxfordshire, England, UK

PostPosted: Thu Nov 28, 2019 1:57 pm    Post subject: Reply with quote

Hi K,

Many thanks for the link to the file that I have now downloaded and viewed via Dashcam Viewer.

The quality is excellent and much better than what I can get from my RoadHawk dashcams, even the latest DC3 can only record at 1080p. The downside is that it's double the storage at 201 MB per minute. Although I guess that that might be optimised by bitrate and even using H.265 Encoding if Dashcam Viewer can cope with it. Although it's probably best to keep to H.264 as then anybody can view the footage without worry.

Regards,
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Robert.
iPhone 6s Plus, iOS 13.2: iOS CamerAlert v2.0.7
TomTom GO Mobile iOS 2.0.3; TomTom (UK & ROI and Europe) iOS apps v1.29
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Kremmen
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Joined: Mar 03, 2006
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PostPosted: Thu Nov 28, 2019 3:39 pm    Post subject: Reply with quote

Yes, the files are large but that's a linked to the quality. 575Mb for 3 minutes

What I've done for my next run out to Reading and back tomorrow is set it to 1080@60.

Just interested to see any difference in quality and filesize given my PC monitor is only 1080.
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Satnav:
Garmin DS61 LMT-D (In the car)
Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
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Kremmen
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PostPosted: Fri Nov 29, 2019 3:44 pm    Post subject: Reply with quote

Robert

As promised, a 1080@60 for your comments.

I'm not sure, but, oncoming number plates are clearer, although this clip is on the M4 so there aren't any. I haven't uploaded the same stretch of road as yesterday because it was facing the sun so not like for like.

See what you think:

https://www.dropbox.com/s/tb2njn6jnrbqzmk/Kremmen%20Sample%201080%4060.MP4?dl=1
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Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
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Privateer
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Joined: 30/12/2002 17:36:20
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Location: Oxfordshire, England, UK

PostPosted: Fri Nov 29, 2019 6:05 pm    Post subject: Reply with quote

Hi K,

Thanks for the 1080@60 video. Both videos look crystal clear.

I think that I prefer the 1440 view as opposed to the 1080 one, although this is probably because I run 1080 (which is the maximum) on my RoadJHawk.

1080@60 is good for slow-motion playback but not necessary for dashcam IMO. Movies generally film at 24FPS so 30FPS is OK. Also, 1080@60 takes twice as much file size as 1080@30, so I'd prefer 1440@30.

What bitrate have you used for 1440@30 and for 1080@60? Have you tried changing bitrate?

My laptop is a MacBook Pro (Retina, 15-inch, Mid 2015) with a native resolution of 2880 x 1800 although I normally run it at 1440 x 900 unless I'm connecting it to a projector when I set the MacBook Pro to match the native resolution of the projector.

Regards,
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Robert.
iPhone 6s Plus, iOS 13.2: iOS CamerAlert v2.0.7
TomTom GO Mobile iOS 2.0.3; TomTom (UK & ROI and Europe) iOS apps v1.29
Garmin Camper 770 LMT-D
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Kremmen
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PostPosted: Fri Nov 29, 2019 6:28 pm    Post subject: Reply with quote

That 1440@30 was at medium bitrate. Don't know how because I always set it to high. Some other setting must have changed it. The 1080@60 was high.

I've set it back to 1440 and high bitrate. Next journey out to Reading is tomorrow so I'll check when I offload it.
_________________
Satnav:
Garmin DS61 LMT-D (In the car)
Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
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Privateer
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Joined: 30/12/2002 17:36:20
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Location: Oxfordshire, England, UK

PostPosted: Fri Nov 29, 2019 7:24 pm    Post subject: Reply with quote

Does the A119 V3 have a config file that it saves on the micro SD card?
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Robert.
iPhone 6s Plus, iOS 13.2: iOS CamerAlert v2.0.7
TomTom GO Mobile iOS 2.0.3; TomTom (UK & ROI and Europe) iOS apps v1.29
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Kremmen
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PostPosted: Fri Nov 29, 2019 7:38 pm    Post subject: Reply with quote

No

Each firmware update and you need to go through all the settings again.

No big deal though.
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Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
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DennisN
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Joined: Feb 27, 2006
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PostPosted: Sun Dec 01, 2019 2:33 pm    Post subject: Reply with quote

I wished last night I was on top quality. This guy drove from Cardiff to Swansea at 6pm with a video playing on a tablet top left of windscreen.

Anbody got a link for the nice policeman to send him a copy of the video?

[IMG]https://hosting.photobucket.com/images/s15/DennisN_2007/1/634695d0-0a95-449d-aec0-f83b9b03db28-original.png?width=1920&height=1080&fit=bounds[/IMG]
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Dennis

If it tastes good - it's fattening.

Two of them are obesiting!!
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Kremmen
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PostPosted: Sun Dec 01, 2019 3:20 pm    Post subject: Reply with quote

Given that sticks out like a sore thumb that just shows the lack of road policing.

Nextbase have links on their site for sending dashcam footage to the various forces.

https://www.nextbase.com/en-gb/national-dash-cam-safety-portal/
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Satnav:
Garmin DS61 LMT-D (In the car)
Garmin 2599 LMT-D (Indoor test rig)
DashCam:
Viofo A119 V3
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DennisN
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Posts: 14658
Location: Keynsham

PostPosted: Sun Dec 01, 2019 8:55 pm    Post subject: Reply with quote

At one stage we were overtaken by a bat out of hell running on blues and twos. When I saw it coming in my rearview I vaguely hoped it was for video man, but it was not to be.
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Dennis

If it tastes good - it's fattening.

Two of them are obesiting!!
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topref
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PostPosted: Mon Dec 02, 2019 10:53 pm    Post subject: Reply with quote

Report to https://gosafesnap.wales/ in South Wales Police area.
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