Check Six!

Got a new mini video camera for Christmas, had to build a new mount to fit it on
the Fly Baby:

http://www.bowersflybaby.com/pix/Pipper_burns.wmv

Ron Wanttaja

Got a new mini video camera for Christmas, had to build a new mount to fit it on
the Fly Baby:

http://www.bowersflybaby.com/pix/Pipper_burns.wmv

Ron Wanttaja
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Can you tighten up that new mount to where the lens takes pictures of
where you are going rather than swinging around bassakwards to where
you have been, Ron? :-)

Barnyard BOb - 1960's Fly Baby driver

On Mon, 19 Feb 2007 07:42:49 -0600, Barnyard BOb wrote:


Got a new mini video camera for Christmas, had to build a new mount to fit it on
the Fly Baby:

http://www.bowersflybaby.com/pix/Pipper_burns.wmv

Ron Wanttaja
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Can you tighten up that new mount to where the lens takes pictures of
where you are going rather than swinging around bassakwards to where
you have been, Ron? :-)

Now, now, Bob.... one can ask only so much for the cheap little tripod socket on
a $70 video camera. It only takes ~2 threads of a 1/4-20 bolt before it bottoms
out; I add safety wire and a tad of hunert-mile-an-hour tape just to be on the
safe side. I make one flight with the camera pointing aft, the next with the
camera facing forward, another with the thing on the tail facing forward, etc.

That's how I did this video, with an earlier, lower-resolution camera:

http://www.youtube.com/watch?v=ubDOG4E_pXs

Ron Wanttaja

In a previous article, said:
That's how I did this video, with an earlier, lower-resolution camera:

http://www.youtube.com/watch?v=ubDOG4E_pXs

That's some weird compression artifact that causes that strange black
stripey stuff in the prop disk.


--
Paul Tomblin http://blog.xcski.com/
So logically, if she weighs the same as a duck, she's made of wood, and
therefore a witch.

On Tue, 20 Feb 2007 00:58:52 +0000 (UTC), (Paul
Tomblin) wrote:

In a previous article, said:
That's how I did this video, with an earlier, lower-resolution camera:

http://www.youtube.com/watch?v=ubDOG4E_pXs

That's some weird compression artifact that causes that strange black
stripey stuff in the prop disk.

Slow frame rate, I think. The camera that took the video on my original movie
is low resolution and only has about 10 frames per second. The new one is
nearly full NTSC resolution with 27 FPS. Same manufacturer, just ~2 years'
improvement in technology (the cameras both sold for about $90.

As Andy noted, even the new camera's sampling rate of the focal plane tends to
show the propeller of the Boredom Fighter as an arc. Certainly not as bad as
the rising/falling ~ of the old camera, but still noticeable.

I just too cheap to spend money for a real video camera, that's all. :-)

Ron Wanttaja

That's some weird compression artifact...

Slow frame rate, I think.

Neither. The "shutter" speed actually looks to be around an effective 1/5000 of a second.
Normal video is 1/60. The distortion of the prop is not due to compression, but due to
how the image is scanned off of the sensor chip... sequentially, row by row, bottom to
top. That is, if it takes 1/5000 of a second to read each row of pixels, then multiply
that by 240 to 480 rows and you get 10 to 20 full frame images every second.

The position of the prop changes by a couple degrees by the time the next row of pixels up
on the chip is read by the camera's firmware. The result is the shearing, bending, and
floating pieces of the blades when the whole image is assembled. Very disconcerting since
we are all too accustomed to our human vision having analog motion blur. This visual
distortion is called Temporal Aliasing (digitally sampled 'stair-stepping' of time).

So Ron. What I'd like to see is how you mounted the camera. There was virtually no high
frequency vibration in that mount... very rigid. Impressive. Plus being that these
cheapo digital cameras are tapeless (record directly to flash memory as an mpeg 4 file),
there's no breakup of the picture due to tape-to-record head gaps from a vibrating tape.
Going to a better, high-end camcorder (even the best mini-DV), your picture is no doubt
going to go in the toilet of digital dropout and break up unless you use an external video
recorder appropriately vibration/shock mounted in the cockpit to prevent tape vibration
that separates it from the rotating head drum.

Dean Scott

--
Posted via a free Usenet account from http://www.teranews.com

Can you tighten up that new mount to where the lens takes pictures of
where you are going rather than swinging around bassakwards to where
you have been, Ron? :-)

Now, now, Bob.... one can ask only so much for the cheap little tripod socket on
a $70 video camera. It only takes ~2 threads of a 1/4-20 bolt before it bottoms
out; I add safety wire and a tad of hunert-mile-an-hour tape just to be on the
safe side. I make one flight with the camera pointing aft, the next with the
camera facing forward, another with the thing on the tail facing forward, etc.

That's how I did this video, with an earlier, lower-resolution camera:

http://www.youtube.com/watch?v=ubDOG4E_pXs

Ron Wanttaja

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

WoW, Ron....

YOUTUBE!!!

I knew you'd be famous one day! ;-)

P.S
Does the stirring audio contain a subliminal
nautical message rather than AERO-nautical?

I have this uncontrollable urge to march
down to the sea in a sailing ship.

Might even try my hand at whaling.....


- Barnyard BOb -

On Tue, 20 Feb 2007 06:11:25 -0600, Barnyard BOb wrote:

That's how I did this video, with an earlier, lower-resolution camera:

http://www.youtube.com/watch?v=ubDOG4E_pXs

YOUTUBE!!!

I knew you'd be famous one day! ;-)

Self-famous, at least. :-)

P.S
Does the stirring audio contain a subliminal
nautical message rather than AERO-nautical?

I have this uncontrollable urge to march
down to the sea in a sailing ship.

Might even try my hand at whaling.....

Bob, Bob, Bob. Have you been to a nickelodeon in the past, oh, eighty years?
The motion pictures are in color now, and the music and the actor's words are
actually heard at the same time.

If you HAD...then you'd know that the music I used on that clip came from an
*airplane* film. It's tied to a scene where a Curtis P-40 Tomahawk...mind you,
a REAL P-40, not a model, not a cartoon, and not even computer-generated the way
the kids get so excited about...is slipping to land on a dirt road, and
subsequently taxis up to a gas station.

If you want to see a Fly Baby video with a nautical soundtrack, this is the one:

http://www.alexisparkinn.com/photoga...Baby-N500F.wmv

....although it should make you want to attack a Spanish galleon, not a hapless
cetacean.

Ron Wanttaja

Do you get more fuel in Spain with a Spanish galleon than in the USA with
the English galleon?

Jim



...although it should make you want to attack a Spanish galleon

Bob, Bob, Bob. Have you been to a nickelodeon in the past, oh, eighty years?
The motion pictures are in color now, and the music and the actor's words are
actually heard at the same time.

My DVD collection is totally of the great silent days.
Talkies and color are for you young chatty whippersnappers.
Distracts from the plot, ya know!

If you HAD...then you'd know that the music I used on that clip came from an
*airplane* film. It's tied to a scene where a Curtis P-40 Tomahawk...mind you,
a REAL P-40, not a model, not a cartoon, and not even computer-generated the way
the kids get so excited about...is slipping to land on a dirt road, and
subsequently taxis up to a gas station.

REALLY?
What movie would that be?

Couldn't be '1941'.
That John Belushi P-40 landed on a paved road and
then taxied to a gas station that was located ON DIRT.
Kinda' like I use to do in my Texass crop dusting days.

If you want to see a Fly Baby video with a nautical soundtrack, this is the one:

http://www.alexisparkinn.com/photoga...Baby-N500F.wmv

...although it should make you want to attack a Spanish galleon,

Hmmm.
Do Spanish galleons hold as much stuff as
Canadian and British Imperial Galleons?

not a hapless cetacean.

Ron Wanttaja

Humongous whales.... HAPPLESS?!?!?
Tell that to Hemingway, Spencer Tracy and the Old Man in the Sea.


- Barnyard BOb -

Over a half century of powered flight