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I Hope Bill Does Not Give Up on DB1  

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Robo Pi
(@robo-pi)
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2019-12-26 8:38 pm  
Posted by: @dronebot-workshop

The problem may be the frame rate, 15fps might be a bit jittery. Otherwise, your other setting is the standard for 720 HD video and 30 fps is pretty standard too (technically its actually 29.97, but it is also called 30).

I'll go with the 720 HD then.    I'll make sure both my cameras are set to the same setting so my videos are consistent and not giving me crazy editing problems. ? 

By the way, I've already copied my post over to the new Video Thread. 

DroneBot Workshop Robotics Engineer
James


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ZeFerby
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2019-12-26 9:29 pm  
Posted by: @dronebot-workshop

([30FPS] technically its actually 29.97, but it is also called 30)

Hum, Bill I'm not so sure ?

Both 29.97 and 30FPS are available as choices in OBS for example :

image

Eric


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Robo Pi
(@robo-pi)
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2019-12-27 12:08 am  
Posted by: @zeferby
Posted by: @dronebot-workshop

([30FPS] technically its actually 29.97, but it is also called 30)

Hum, Bill I'm not so sure ?

Both 29.97 and 30FPS are available as choices in OBS for example :

image

That's what I was thinking too.  I have both choices in Kdenlive as well.

But then again they could just be giving the user both choices when behind the scenes it's actually the same choice technically?

It seems to me if they are the same why not just offer the single choice of 30/29.97 ? 

The 29.97 frames per second does seem really strange.  Why such weird timing?  There's got to be some interesting trivia behind that one.

DroneBot Workshop Robotics Engineer
James


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Robo Pi
(@robo-pi)
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2019-12-27 12:34 am  

The 29.97 fps Trivia Revealed!

 

DroneBot Workshop Robotics Engineer
James


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Pugwash
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2019-12-27 12:59 pm  

@dronebot-workshop

Yes I did too until I got a few 4k monitors - unless my face really is that pale and washed out! Which is entirely possible, as I haven't been exposed to daylight for several months now! 

I had noticed that too! In some videos, your complexion looks like someone who would suffer severe sunburn at a fireworks display.

You could turn up the hue in post-production, but not too high, your Prime Minister made that mistake with some black shoe cream! ? ? ? 


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Pugwash
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Robo Pi
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2019-12-27 2:13 pm  
Posted by: @pugwash

@robo-pi

Here is the reason!

That's the reason why it doesn't matter anymore.  I wanted to know how it came to be in the first place. ? 

Also it actually could matter in a video editor.  If you have the video editor set for 29.97 fps but your camera actually produces 30 fps video, this could cause the editing software to not work as efficiently as it would if you had the framerate set properly.   The video editing software most likely offers the 29.97 framerate because there are still cameras out there that actually take video in that frame timing.

My cameras actually take video at 30 fps, so I have no need to worry about the 29.97 fps framerate.

Bill mentioned  producing his videos at 29.97 fps to be consistent with American standards.  But apparently he doesn't need to do that.  He may as well produce his videos at 30 fps.   It's not going to make any difference  to YouTube.  Apparently YouTube accepts any framerate video you give them and it really doesn't matter.

In the editing software you want to set the framerate to match your camera, whatever framerate that might be.

My main concern with making videos for YouTube is to make them in a format that will upload to YouTube the fastest.   Right now I'm thinking that MP4 file format seems like the most logical choice since they produce the smallest video file size.

 

DroneBot Workshop Robotics Engineer
James


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triform
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2019-12-29 1:35 am  

I know this is a bit late, but...

Building a robot that does something other than avoiding objects and just roam around, is a lot of work and sometimes even a lot of rework.  It also can be expensive and very time-consuming.  I know when I did my first subsumption based rover, I thought about what I wanted for a very long time and just tinkered with support components on the side and then after I was happy with what I thought I wanted, I started on it in earnest. It was about two years of work. A GPS bot I did, I worked and reworked the code several times before I got it working the way I liked.  Then a telepresence bot I did, took only a weekend and some extra tinkering to get going, but they can be simple to do now with the available components.

Scott


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robotBuilder
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2019-12-29 8:23 pm  
Posted by: @triform

Building a robot that does something other than avoiding objects and just roam around, is a lot of work and sometimes even a lot of rework.  It also can be expensive and very time-consuming. 

Hopefully the only time-consuming part will be learning how to use the ROS software as I would suggest this will be the most time consuming part of DB1 build?  If the project is good enough it can become an article in an electronics magazine and hopefully a retail outlet will find it worthwhile to provide all the parts at a reasonable cost in kit form?

Here is an example of a ROS based robot I expect the DB1 to be as good as.

 


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starnovice
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2020-07-29 6:58 pm  

 @dronebot-workshop

I really hope DB1 is not dead.

So, it has been a long time since we have heard any news on the DB1.  I was working very hard on mine but now I am stalled without some input on Bill's design direction.  I'm beginning to think he has moved on to other things.  I wish we would at least give some hand waving direction to help us figure out where to go next. I'm at the point where i need to attach ultra sonic sensors but I would like to know what work Bill has done so I don't have to re-invent the wheel.

This post was modified 2 weeks ago by starnovice

Pat Wicker (Portland, OR, USA)


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Michael T
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2020-07-30 1:07 am  

I seem to be in the same boat, Pat.  I'm still very motivated to bring my DB1 to some sort of life, but I'm beginning to suspect it's going to take a good deal longer than I'd originally thought, and may have to be much more self-directed.  But since the lockdown is currently keeping me away from my shop anyway, I've been taking the opportunity to watch some of the most excellent tutorials by Paul McWhorter on such subjects as Arduino programming, the Jetson Nano, and robotics.  One epiphany at a time I'm beginning to see a path forward with my DB1.

But I'm with you...I'd welcome any further thoughts or guidance from Bill.  

Michael T, Honolulu


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