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Old 10 Oct 2010, 21:33 (Ref:2772794)   #1
MaxxUK
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Onboards from Britcar 24Hr (Day/Dry & Night/Wet)

Couple of videos I posted a week ago from onboard our Civic Type-R in the Britcar 24Hr race. If you've followed the news it was a very tough race with 21hrs of wet running and very slippy track plus various times when the safety car came out for fog, prob about 3hrs or more of SC.

I was driving the No 94 Daniels Motorsport Civic Type-R (EP3). We have competed in this same car on 4 previous occasions and won our class in 2006/2007, finished 5th in 2008, no race in 2009 and we finished 6th in class (23 cars) and 27th overall (63 cars).

These are both quite rushed as I processed and posted them on the Sunday as the race was still in progress. I will be trawling through the rest of the video we took for more highlights and such and do a bit better job with the filters and such.

This is early footage from about lap 9. There was a safety car period after 4 laps so this is where the action starts. Checkout the speed of those Moslers @ around 3mins and especialy 6min.

http://www.youtube.com/watch?v=Et6nc4RXVYw

This is some night footage, and it was VERY wet. We actually had rain from about 3hrs in until the end of the race which made conditions very tricky.

http://www.youtube.com/watch?v=p5hjICXnXQU


Couple of pics of the car on track.



And one of the Civic during the race in the wet ...



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Old 12 Oct 2010, 10:17 (Ref:2773703)   #2
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Are you using a vbox there Maxx, or something else?
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Old 12 Oct 2010, 12:41 (Ref:2773771)   #3
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Are you using a vbox there Maxx, or something else?
No Chris, VBox nowhere near flexible enough to do that. It's VIDEO4 from Race-Technology who also make the DL1, the 2 work together. We captured the based video and data and do the overlays later so we can put anything we want from the data over the video.

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Old 12 Oct 2010, 14:51 (Ref:2773832)   #4
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Hi Maxx,

Good to know, thanks. Does the VIDEO4 have a real-time video out?
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Old 12 Oct 2010, 15:00 (Ref:2773839)   #5
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Hi Maxx,

Good to know, thanks. Does the VIDEO4 have a real-time video out?
Yes sure. Often used for live broadcast.

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Old 12 Oct 2010, 15:02 (Ref:2773842)   #6
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Last question How often during the race did you switch data cards?
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Old 12 Oct 2010, 16:50 (Ref:2773895)   #7
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Last question How often during the race did you switch data cards?
We didnt get the whole 24hrs as I had to take the V4 out to run it in an MX5 that I was also racing that day, when I went to put it back I had very little time and didnt do a great job of fitting it (just used double-sided tape) and it came lose and pulled a power cable out of the data logger (I was using the data logger to switch V4 on and off for pitstops (based on speed).

Anyway, I digress, we would have needed to change it once only as we used a 32Gb CF-Card which holds 12hrs @ DVD Quality 6144Kbps. Because it would be hard to get to swap it exactly 12hrs though we would have changed it twice.

The V4 can use 64Gb cards but they are pretty expensive.

You can select the bitrate and you can get away with much lower if you are just posting to video sites such as Youtube. 4096Kbps is hardly distinguishable and at that you can get over 17hrs.

You could use 2048 which would give you over 32hrs but it's a bit webcam'y'

Note that most of my vids inc these are 'processed' after. What I do is crop the video top and bottom (to something like 720x420) then encode it at 1280x720 so Youtube treats it as HD. The cropping and stretching does reduce the quality a fair bit but this is made up for by the better processing that Youtube does on the uploaded source. The raw footage is much better quality.

This might give you a better idea, it's not been cropped and stretched, watch it full screen, i'd say it's 90% the quality of the original. Data was screwy on this one

You can actually record 'proper' widescreeen 1024x768 with the VIDEO4 but you are limited (by todays bulletcams) to 720x576 for any individual view).

You can get something like this :

http://www.youtube.com/watch?v=r-s_pKQE49Q

http://www.youtube.com/watch?v=1Ct0JNZDZ_c

You thinking of running one in the 2CV 24hr?

I was thinking about it last year but it was all a bit rushed, only signed up the day before quali. Hoping to do it in 2011 though.

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Old 13 Oct 2010, 09:49 (Ref:2774265)   #8
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I have an interest in these sorts of things, as this year one of the teams I was 'working with' invested in a Video Vbox lite, and were most impressed with it. They were able to do their own overlays, got valuable data from things like throttle position, etc. and generally found it to be a useful tool.

We also had it hooked up to a 'live feed', but unfortunately the transmitter wasn't up to the job and failed to send much further than down the pitlane. Lessons were learned for next year!

I see that the VIDEO4 is a probably a much more comprehensive unit, but also comes with a more comprehensive price tag , but still, if anyone approaches me about this sort of thing (they do occasionally), I can give them a few options, depending on their budget.

Thanks for the info on the encoding rates as well - very useful. I was looking at trialling a recorder this year which was capable of recording the whole 24 hours (2CV) on a 32gb card, but wasn't sure what the quality would be like. From your response, it seems like it would be somewhat less than DVD quality!

Next year, I'm hoping to do some trials on a new idea for live streaming. For long races, it may work out better to stream the video to a central place and record it there, rather than onboard the car. There's also the advantage of publishing such video live on a website. Such systems are usually prohibitively expensive, but I think I have a way of doing it on a more economic scale. If I get it right, it could be something that could be used in Britcar, the 6 hour race, etc.
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Old 13 Oct 2010, 11:48 (Ref:2774319)   #9
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Chris,

Quote:
Originally Posted by Chris Y View Post
I have an interest in these sorts of things, as this year one of the teams I was 'working with' invested in a Video Vbox lite, and were most impressed with it. They were able to do their own overlays, got valuable data from things like throttle position, etc. and generally found it to be a useful tool.

We also had it hooked up to a 'live feed', but unfortunately the transmitter wasn't up to the job and failed to send much further than down the pitlane. Lessons were learned for next year!

I see that the VIDEO4 is a probably a much more comprehensive unit, but also comes with a more comprehensive price tag , but still, if anyone approaches me about this sort of thing (they do occasionally), I can give them a few options, depending on their budget.

Thanks for the info on the encoding rates as well - very useful. I was looking at trialling a recorder this year which was capable of recording the whole 24 hours (2CV) on a 32gb card, but wasn't sure what the quality would be like. From your response, it seems like it would be somewhat less than DVD quality!
Yes, there are no shorcuts unfortunately, DVD quality is 6,000kbps @ 720x576 so always takes up the same amount of space, if it take up less then it isn't to that spec.

Quote:
Next year, I'm hoping to do some trials on a new idea for live streaming. For long races, it may work out better to stream the video to a central place and record it there, rather than onboard the car. There's also the advantage of publishing such video live on a website. Such systems are usually prohibitively expensive, but I think I have a way of doing it on a more economic scale. If I get it right, it could be something that could be used in Britcar, the 6 hour race, etc.
Yes, I have also been looking into this, along with Race-Technology, will PM you my thoughts.

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