Panorama II / S Bit-rate: 12 vs 15 / 18 / 21Mbps Day'n Night test

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niko

niko

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#21
Thanks Niko for your comprehensive report. I now realize the only way I can tell a difference between 15M and 21M is on the Apple MBP Retina display viewing the raw file. On my non-retina display or viewing in Youtube I can't see much difference. Now I must weigh up absolute clarity versus file size. Maybe I'll opt for 18M which is a compromise.
You are welcome.
Glad you also found device ( Apple MBP Retina display ) where you can see difference, because most "standard" displays does not show difference, so it is essential to watch raw files on higher specs displays.
 
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#22
was the unit ran hotter in 21 mbits? than 15 mbits.
Touching with hand I could not feel any difference, but I did not had special temperature measurement devices to know exact difference.
 
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#23
Due to some Panorama II buyers "requests"-suggested ( I was one of them who was asking for ) to rise a bit-rate, developer released 3 additional firmwares with options of higher bit-rate: 15, 18, 21Mbps ( variable ).

For over 2 weeks ( total approx 40h work ) I was testing side by side new high bit-rate firmwares to see how much they can improve a video quality.

15 / 18 / 21Mbps Bit-rate FW Download for Panorama II / S

Below is my extensive side by side test and conclusions.

- higher bit-rate option: 12, 15, 18, 21Mbps
- more natural colours
- removed blue "haze" background at daytime ( tree / sky )
- Brightness "ON-delay" / WDR tune-up for 15, 18 mbps bit-rate*.
* with 15mbps bit-rate brightness stayed ON for about 30sec when I drove into the multistor car-park
* with 18mbps bit-rate brightness stayed ON for about 10sec when I drove into the multistor car-park
* with 21mbps bit-rate brightness adjusted to darker value instantly after I drove into the multistor car-park

* regarding brightness "ON-delay" / WDR tune-up please watch my video comparisons and screenshots.

Video data comparisons for day and night videos. Bit-rate is variable.

View attachment 4277

View attachment 4278



Side by side tests. ( YouTube videos )

DAY





NIGHT





Side by side Day screen-shots comparison

View attachment 4279


View attachment 4280


Same ( above ) screen-shots bigger size

View attachment 4281


View attachment 4282


View attachment 4283


View attachment 4284


View attachment 4285



View attachment 4286


My conclusions:

Is it worth upgrading to higher bit-rate ?
- Yes, but in my opinion not over 15Mbps.

To see a difference in video quality you need to have a high quality monitor / display and use original / raw video files, NOT YouTube compressed.

I do have 24" quite good specs AOC 1080p PC monitor, but I was able to see only about 5-10% improvements on that monitor, mainly for day time videos. Also I tested on 42" 1080p LED TV and there I was able to see maybe another extra 5% improvements changes. Later I tested on 50" Plasma LCD and I was able to see maybe another 5% extra improvements. So, it total improvements between 12 vs 15Mbps are about 15 ( maybe 20% ) ?
Those differences I was able to see mainly for day-time videos, night time noise was also reduced slightly but not that marginal to see big difference, hence I did not do any night side by side screen-shots.

NB! Those % figures ( above ) are just from what I was able to see with my eyes. I did not had any special professional measuring tools or software / players, so it is my average conclusions what my eyes saw.

For real comparison test ( not youtube compressed) I am adding original RAW videos ( not youtube compressed ).
You may download raw original video files: DAY and NIGHT

18 and 21mbps bit-rate looked to me same as 15Mbps. At this stage I don't see any reason to use higher than 15Mbps bit-rate.

I think for better affect of higher bit-rate on video quality improvement, need to sharpen a video, then I guess 15Mbps and even 18Mbps bit-rate will show much more improvement result.
Developer working on a new firmware. Hope it will be out soon.

Let’s say it makes 5% or even 10% better picture (main-problems are Aliasing, Moire, Sharpness - nothing gets better with higher Bitrate). It adds a very high risk of the recording being stopped.
 
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