G90 Ambarella A7LA70 Video Resolution

zorooo_06

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Hi I have G90 Ambarella A7LA70
I want to ask which video resolution you use...
which is the best (1280x720,hdr 1920x1080 or 2560x1080)?
As you know the video size is too big for store...
 

Sunny

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More than I can review. ;)
If you are worried about storage, choose the lowest resolution.
What's the question?
If you want quality, choose the highest resolution. :rolleyes:
I always use the best available quality.
 

grassright

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If you are worried about storage, choose the lowest resolution.
What's the question?
If you want quality, choose the highest resolution. :rolleyes:
I always use the best available quality.

But I was wondering whether the highest resolution will affect the video quality? My understanding is that for a constant bitrate, the higher the resolution, the lower the quality. Please correct me if I am wrong.

And actually I notice the bitrate is around 15Mbps for both for 2560 and 1920.
 

Sunny

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More than I can review. ;)
It's not constant bit rate, it's VBR.

1920x1080p:
2015-04-16-15-36-25-mov_20150416_215427-241-jpg.12897


2560x1080p resized at 1920 wide:
2015-04-14-16-23-16-mov_20150414_180020-056-jpg.12843


1920x1080p:
2015-04-16-07-32-11-mov_20150416_215330-191-jpg.12896

2560x1080p resized at 1920 wide:
2015-04-14-07-45-07-mov_20150414_173643-740-jpg.12837
 
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grassright

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It's not constant bit rate, it's VBR.

From the photos I couldn't see major difference, especially considering the lighting is much better for 2560 in your example.
Can you please show the bitrate for each video as well?
I understand it's VBR, but I feel the average rates are not too far away from each other under different resolutions. Please correct me if I am wrong...
 

Rene Sorreda

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Sunny, i always love to see your stunning pics taken as if you are in a stand still position . What is your vehicle speed here?
 

Sunny

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More than I can review. ;)
From the photos I couldn't see major difference, especially considering the lighting is much better for 2560 in your example.
Can you please show the bitrate for each video as well?
I understand it's VBR, but I feel the average rates are not too far away from each other under different resolutions. Please correct me if I am wrong...
Not sure.
The 1080p clips are from 60fps mode.
I'll have to take video at 1080p 30fps and check VBR.

Sunny, i always love to see your stunning pics taken as if you are in a stand still position . What is your vehicle speed here?
The speed is little over 50mph ~ 80kmh.
Speed limit is 45mph but everyone goes above that easily.
 

Mandami

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I personally use 2560x1080, as it cuts the upper (i.e., the sky) and lower portions (i.e., the dashboard) of the video. It works pretty well. If you worry about the storage, try a 64 GB memory card.
 
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