Vehicle Telemetry And In Car Video

[swingtan]

We have all seen the "in car" camera shots with "vehicle telemetry" data over laid to show what is going on. I really enjoy seeing what the engine is doing and would like to see a lot more of it when watching the races. I also like working on my own car and given the slight lack of motor sport on TV ATM ( 10 HD has some at least ), I decided I needed to put mey skills to the test and see what I can come up with.

So using EFILive for telemetry data and the Nokia N95 to record some video, I came up with the following....



7YSD1_h0UxE


Admittedly, YouTube messes up the video a bit with it's compression, but I'm pretty happy with how it turned out. Now to do some track days and really get some good footage. I'll also remember to work on the audio to stop the wind noise.....

Simon.

[Djbarnstar]

That's a win right there. Like you mentioned perfect for track days to have a squizz at later... EFI Live though? So you had your laptop plugged in while driving and then how do you put that over the top of the vid?

[Desertws6]

:goodjob: Simon, that is cool!


,Steve

[XUV]

:goodjob: make it into an iphone app and you're on a winner .

[swingtan]

So you had your laptop plugged in while driving and then how do you put that over the top of the vid?

No. EFILive can do full Black Box Logging ( BBL ) with the V2. If you also use the inbuilt SD card slot and the maximum supported SD card of 2GB, you can record around 200 hours of data with out touching a laptop. I've logged the entire trip from Melbourne to Eden NSW this way. The V2 also has the ability to set visual and audible alarms, which you can hear when I loaded the engine up a little and the Knock Retard alarm went off. All in all, it's a very good bit of gear.

To do the overlay takes a bit of messing around. You need a few differnet tools, but all of them are OpenSource, so free to use. Then you just need to step through the process bit by bit to get the desired result.

Simon

[HSV Listy]

Looks great and nice work. Would like to know how you do that.
I tried a similar thing with the Innovation LM2 data but never managed to get the overlay sorted out.

I was planning to put this as a PIP in one corner and only using 3 or 4 of the guages or changing them to a graph set up. I then just have the normal video running.

This is the LM2 and a video but as mentioned never overlayed it or PIP. I am still working out Adobe Premier Elements but the different meg videos done like matching. Also the below is just a screenshot so no idea how to put that on a video format. Screenshot also make the letters hard to see and there is issues like the TP only goes to 85% and some sensors were not working either as they did not move.

http://www.youtube.com/watch?v=K86D0uEvdYM

and the lap of Hidden Valley that I got the data from.
http://www.youtube.com/watch?v=otmbpEAQtPE

One day I will work it out but well done to your video. Awesome

[BECAUZ]

Well done :goodjob: would be very interesting to see how it is on a race day and assess how you actually drive.

Btw the wind noise isn't to bad :D

[swingtan]

HSV Listy: To make it really easy on yourself, you need to have a "sync" point in both the video and the log data. Beginning from a stand still helps as does having obvious points through the video that you can reference the log data to. This helps keep it all in sync.

I used all OpenSource software for my video. All of it is free, you just need to work out what is needed and how to do it. I took me most of Tuesday, starting with almost nothing. I may do a HowTo is there is enough interest.....

[HSV Listy]

HSV Listy: To make it really easy on yourself, you need to have a "sync" point in both the video and the log data. Beginning from a stand still helps as does having obvious points through the video that you can reference the log data to. This helps keep it all in sync.

I used all OpenSource software for my video. All of it is free, you just need to work out what is needed and how to do it. I took me most of Tuesday, starting with almost nothing. I may do a HowTo is there is enough interest.....

Cool and thanks for that. The DVR is a 4 channel with 4 cameras running at 25fps each so I could press record on the LM2 just after I start it and hopefully by the time the CF cards starts recording it will match up. I have a track meet on the 27 Feb so I will see how things go. Lots of camera angels is not a problem so I will check out that program and go from there.
Thanks

[steve_t]

Totally awesome! :bow::bow::bow:Can you change the read outs? Like instead of Oil Pressure, have an analogue display of TPS. And instead of AFR, have whether the brakes are applied? I also love watching camera footage of the footwell seeing the drivers working the pedals bloody hard around the track :goodjob:
If you were here in NZ, I'd lend you my GoPro HD camera

[swingtan]

Cool and thanks for that. The DVR is a 4 channel with 4 cameras running at 25fps each so I could press record on the LM2 just after I start it and hopefully by the time the CF cards starts recording it will match up. I have a track meet on the 27 Feb so I will see how things go. Lots of camera angels is not a problem so I will check out that program and go from there.
Thanks

Just set both recording, then do something that will be detected on both. Maybe a quick stab of the throttle or a takeoff and then stop. Then you have something that you can sync to.


Totally awesome! :bow::bow::bow:Can you change the read outs? Like instead of Oil Pressure, have an analogue display of TPS. And instead of AFR, have whether the brakes are applied? I also love watching camera footage of the footwell seeing the drivers working the pedals bloody hard around the track :goodjob:
If you were here in NZ, I'd lend you my GoPro HD camera

Yes, I can display just about anything. Brake pedal is loggable and I've had it selected for some time, but I can't find the right setting to display it yet :p I'll need to check with the EFILive guys about that. You name it, I can log it ( just about ). I usually log the following as a default setting.


ECT ( Engine Coolant Temp )
IAT ( Intake Air Temp )
AAT ( Ambient Air Temp )
Spark Advance
Knock Retard
MAF Freqency ( Yes I still run a MAF ;) )
MAF gm/Sec
Dynamic Air gm/Cyl
RPM
Electronic Throttle Possition ( ETCTP )
Actual throttle Peddle Possition ( APP )
Manifold Absolute Pressure ( MAP )
Vehicle Speed Sensor ( VSS )
Commanded AFR
WB logged AFR
Injector Base Pulse Width ( both banks )
NB O2 voltage ( both banks )
Short Term Fuel Trims ( STFT, yes I run Closed Loop )


as well as a few others, but you get the idea. The GoPro would be a great bit of gear to play with. Wedging the Nokia between the head rest and seat is not as good, but gets the job done....

Simon

[HSV Listy]

I found a clearer example of the LM2 display. (not competing EFI verse LM2 as no contest just purely learning)

http://www.youtube.com/watch?v=aq726TzFrDs

Below is a little bit of 4 channel video. I will use the same or similar angles but the DVR i have now does all 4 channels at full speed frame rate so no flicker. If I can get some of the LM2 details overlayed with that program you mentioned and some video editing it should be pretty interesting video. I will have a shot on the weekend and see if I can get some street cruising video up.

Some more video of my mate James driving the GTS. Good to see he did not hold back. Sorry about the sound missing as stupid me forget to turn it on. Grrrrr. I think overlay the data with the 4 channel video might be a good thing.
Thanks heaps for the help. Much apreciated.

http://www.youtube.com/watch?v=tg6t2M_BXZM

[swingtan]

OK, another tip for the gauges. Try and position them away from the center of the frame, as that's where your main focus for the DVR will be. Also, you want to set them up to be in a formation that fits in the same size frame as the video as well. The less you need to resize / adjust frames, the cleaner the final video will be. Where possible, work in raw uncompressed video, just like when editing images, only way more data ;)

As an example, here is a frame grab from the original video....

http://farm5.static.flickr.com/4026/4310615059_511ce291f0_o.jpg (http://www.flickr.com/photos/swingtan/)

And a frame from the original EFILive dash page, after capturing....

http://farm5.static.flickr.com/4025/4310615055_575d2f673d_o.jpg (http://www.flickr.com/photos/swingtan/)

And finally, the layer mask used to only display a transparent copy of the gauges....

http://farm5.static.flickr.com/4002/4310615061_77898233c4_o.jpg (http://www.flickr.com/photos/swingtan/)

Note that all are the same aspect ratio to start with. it makes it much easier.

Simon

[HYMEY]

Simon....Maybe you can do this for channel 10? lol And he offer advice to the race teams on there tune. Multi Skilled motorsport reporter.

[LS2_307]

Just set both recording, then do something that will be detected on both. Maybe a quick stab of the throttle or a takeoff and then stop. Then you have something that you can sync to.



Yes, I can display just about anything. Brake pedal is loggable and I've had it selected for some time, but I can't find the right setting to display it yet :p I'll need to check with the EFILive guys about that. You name it, I can log it ( just about ). I usually log the following as a default setting.


ECT ( Engine Coolant Temp )
IAT ( Intake Air Temp )
AAT ( Ambient Air Temp )
Spark Advance
Knock Retard
MAF Freqency ( Yes I still run a MAF ;) )
MAF gm/Sec
Dynamic Air gm/Cyl
RPM
Electronic Throttle Possition ( ETCTP )
Actual throttle Peddle Possition ( APP )
Manifold Absolute Pressure ( MAP )
Vehicle Speed Sensor ( VSS )
Commanded AFR
WB logged AFR
Injector Base Pulse Width ( both banks )
NB O2 voltage ( both banks )
Short Term Fuel Trims ( STFT, yes I run Closed Loop )


as well as a few others, but you get the idea. The GoPro would be a great bit of gear to play with. Wedging the Nokia between the head rest and seat is not as good, but gets the job done....

Simon

What PID do u use for brake?

[swingtan]

Brake peddle is logged with BRKR in the BBL PIDs, but only for the E38, T42 or T43 controllers. The LS1 controller doesn't support it.

[alian]

Simon, Where is the Crompo voice over???? Seriously great work, woldnt it be great to have an add on for the V2 like that.
Cheers Ian

[HSV Listy]

Missed the start by 1 second. Not too bad for the first proper go and took about 1 hour to do the editing of the vids and the data download and about 20 minutes to do the joining of the video on Adobe 4. I gave up on the internet and I had this program already but only used twice. I used low res video to keep the videos easy to upload while I am mucking around with this. The sound has dropped and some clicks and clunks appeared.
Came up ok but not a proper overlay arrangement like the OP. More picture in picture video. I tried it with individual guages but just too much time is needed. It can be done if you have the time.
No idea what happened with the speed. Must of set the LM2 data configeration wrong. I was doing 80 not 40. Also ignore all the information as it is testing video for a DVR system for a company. This is just some fun

http://www.youtube.com/watch?v=GdfEvSTvs2Q

I have some video from Hidden Valley and the LM2 data of a few laps so i will overlay that and take people for a lap of hidden valley with all the guages going.

[HazzaHSV]

You can do this quite easily with a Nokia phone, a OBDII key and RaceChrono (freeware) too.

Since it utilises the inbuilt GPS and accelerometer, and the OBDII data, it tracks your progress around the track, provides an extremely accurate laptime, displays G forces and displays any of the OBDII data you want.

http://www.youtube.com/watch?v=rdG9jF8rZ1M

Here's a closeup of the kind of dash you can create.

http://www.youtube.com/watch?v=CylOlvUh7VM (http://www.youtube.com/watch?v=CylOlvUh7VM&feature=related)

PS - Where's the youtube embedding gone?

[swingtan]

I've got RaceChrono, but have not been too impressed with the GPS in the Nokia. I also prefer to use the V2 for ODBII logging as it is much more powerful and ties in with the tuning software. If I didn't have the current gear though, I think RaceChrono would be a good option though.

Simon.

PS. to embed youtube clips, enclose the clip id in the youtube tags.
( highlight the text below to read it better )



7YSD1_h0UxE

[HazzaHSV]

I've got RaceChrono, but have not been too impressed with the GPS in the Nokia. I also prefer to use the V2 for ODBII logging as it is much more powerful and ties in with the tuning software. If I didn't have the current gear though, I think RaceChrono would be a good option though.

Simon.
Yeah the N95 GPS was one of the first integrated ones and is pretty crappy compared to the newer ones, both the location of the module and the chipset tech are lacking. Having said that even the new Nokia internal GPS' are only 1Hz (enough for casual trackdays though). If you are more serious for 60 bucks you just get a 5hz external bluetooth GPS reciever and the data is brilliant and very accurate.

The ODB Key will give most of the parameters someone would need but yeah not as many as the V2. Having said that, GPS and accelerometer data along with most of the OBDII data, and some free software is a damn good combo. I spose even better would be to log with V2 for the OBDII stuff and run Racechrono for the GPS/Laptime/G-Force data.

PS. to embed youtube clips, enclose the clip id in the youtube tags.
( highlight the text below to read it better )
Oh I meant where did the picture icon for video's go? I am familiar with the tags.

[swingtan]

No idea on that. I think it needed recoding after the last upgrade and just hasn't been done yet.

[GHZ28]

I use a commercial program, TrackVision, that integrates easily with my Racepak data logger.

Here is a lap of Lakeside with the IQ3 dash, that I use, overlayed on the video.

This is a 62 second lap with a passenger, so definitely nowhere near a full attack lap, as you will see.

Garry

http://i86.photobucket.com/albums/k88/ghawgood/VT%20Track%20car/th_Lakeside62seclap.jpg (http://s86.photobucket.com/albums/k88/ghawgood/VT%20Track%20car/?action=view&current=Lakeside62seclap.flv)

ps. Sorry about the format, will try to fix it, should be 16:9 and seems to have gone to 9:16, my first real attempt to make a low res version of my videos