This should probably just link directly to the video: https://www.youtube.com/watch?v=4PwDFddpo4c (if you're impatient, skip to 1:50).
Here's a timestamped link if you are too impatient to skip it yourself
Drone footage of fledging penguins jumping off cliff
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Re: Drone footage of fledging penguins jumping off cliff
#42Given this video is taken by a drone, and drones are very noisy, are the splashing sounds and sounds of penguins chirping added later?
Two dimensions to this question: first, drone noise; second, audio track.
On the noise:
> "Given this video is taken by a drone, and drones are very noisy..."
Here's from National Geographic's press release on this video:
“Through the harnessing of new technology and pushing the boundaries of polar filming, Bertie utilized a newly released camera drone equipped with a telephoto lens allowing him to capture animal behavior from the air like never before without disrupting or impacting the penguins.”
https://www.businesswire.com/news/home/20240411040454/en/Nat...
So they were aware of the noise and other disturbance to the penguins, and were far enough away its unlikely these sounds are recorded from the drone itself.
On the audio track:
Mics and recorders could have been placed in advance. Given the level of preparation described, this is a possibility.
Audio of a given action or situation could have been captured separately elsewhere and dubbed. This seems most likely, and if natural sounds were captured on location from the same flocks, wouldn't generally carry a disclaimer.
In either of these cases, the drone doesn't need a mic, or can carry one just for sound sync purposes, but the sound is done in foley with or without a field recording.
To use drone audio without it audible to the viewer, shotgun mics with a sound pattern that picks up far point noise (imagine a teleaudio mic to go with the telephoto lens) could be used.
Drone noise is distinct, and can be removed, firms and software specialize in this: https://www.sound2design.com/online-sound-restoration-and-dr...
One way is to point the shotguns at silence, record drone noise alone, then invert it, something like "speech transparency" mode in noise cancelling headphones.
Today's audio processing is relatively magical when it doesn't have to fit in an earbud.
I haven't researched this case, but it sounded like foley.
Re: Drone footage of fledging penguins jumping off cliff
#43Jumping in is the easy part. How do they get back up on land?
Re: Drone footage of fledging penguins jumping off cliff
#44Re: Drone footage of fledging penguins jumping off cliff
#45First drone footage of x is becoming a little rarefied, not to say boring and predictable for some values of x. So I expect this to be the peak of consumers buying little mavics to film their trips to Mont Blanc or the Amalfi Coast. Honestly, their friends are not interested. It was sad and ridiculous while it lasted, and now I hope it's over.
Why should they care what their friends think? Can we not take pictures and videos of things for our own enjoyment of that act? FWIW I don't own a drone nor have I ever considered buying one. I do have a horde of 35mm film cameras though.
If it was really enjoyable, you will remember it. The human memory is designed to fix emotional experiences. No need for celluloid or pixels. If you were with a loved one, your future conversations about that time will keep the memory alive.
There is a certain value and excitement in showing personal photos or videos to grand-children. But their children will not even know your name.
The vanity and self-importance of youthful experiences will wane with age, reflection, wisdom, and a certain acceptance of our transient existence.
Yes, I left many meaningless 35mm negatives, in a long forgotten attic, of a distant house, which I used to inhabit. Nobody will miss them. Not even me. If they are, perchance, discovered by a future owner of the house, they will be excited, for about 10 minutes, then throw them away.
Re: Drone footage of fledging penguins jumping off cliff
#46Overheard in the flock:
"nee nah, I bet you dare not to jump!"
Re: Drone footage of fledging penguins jumping off cliff
#47Earlier quoted context omitted.
Why should they care what their friends think? Can we not take pictures and videos of things for our own enjoyment of that act? FWIW I don't own a drone nor have I ever considered buying one. I do have a horde of 35mm film cameras though.
If it was really enjoyable, you will remember it. The human memory is designed to fix emotional experiences. No need for celluloid or pixels. If you were with a loved one, your future conversations about that time will keep the memory alive. There is a certain value and excitement in showing personal photos or videos to grand-children. But their children will not even know your name. The vanity and self-importance of…
> If it was really enjoyable, you will remember it. The human memory is designed to fix emotional experiences. No need for celluloid or pixels. If you were with a loved one, your future conversations about that time will keep the memory alive.
Words to live by.
My point is this: the act of capturing photo and/or video is itself the draw for some people. It's an art form - beauty isn't just captured in a photograph, it's created through composition. A great photo is never just a photo of a great thing.
Why should the transience of my art deter me, if I myself am also transient?
Re: Drone footage of fledging penguins jumping off cliff
#48[flagged]
Perplexity.ai: calculate the terminal velocity of an average sized penguin falling head first - Sources omnicalculator.com favicon wikihow.com favicon View 2 more Answer The terminal velocity of an average-sized penguin falling head-first can be calculated as follows: Assuming an average penguin weight of 5 kg and a cross-sectional area of 0.1 m^2, with a drag coefficient of 0.8 for a streamlined, head-first orientat…
How about an unladen African Swallow, though?
Re: Drone footage of fledging penguins jumping off cliff
#49[flagged]
Perplexity.ai: calculate the terminal velocity of an average sized penguin falling head first - Sources omnicalculator.com favicon wikihow.com favicon View 2 more Answer The terminal velocity of an average-sized penguin falling head-first can be calculated as follows: Assuming an average penguin weight of 5 kg and a cross-sectional area of 0.1 m^2, with a drag coefficient of 0.8 for a streamlined, head-first orientat…
Claude assumes a much more streamlined penguin:
To calculate the terminal velocity of an average-sized penguin falling head first, we need to consider the balance between the force of gravity and the air resistance acting on the penguin. The terminal velocity is reached when these two forces are equal.
Given: - The average mass of an adult penguin is around 5 kg. - The average height of an adult penguin is about 70 cm. - The penguin is falling head first, so we will assume a streamlined shape with a low drag coefficient (Cd) of around 0.05. - The density of air at sea level is approximately 1.225 kg/m³. - The acceleration due to gravity (g) is 9.81 m/s².
Step 1: Determine the cross-sectional area (A) of the penguin. Assuming the penguin has a circular cross-section when falling head first, we can estimate the area using the average height. Diameter (d) ≈ 70 cm ÷ 5 = 0.14 m A = π × (d/2)² ≈ 0.0154 m²
Step 2: Use the terminal velocity formula. v_terminal = √((2 × m × g) ÷ (ρ × Cd × A))
Where: - v_terminal = terminal velocity (m/s) - m = mass of the penguin (kg) - g = acceleration due to gravity (m/s²) - ρ = density of air (kg/m³) - Cd = drag coefficient - A = cross-sectional area (m²)
Plugging in the values: v_terminal = √((2 × 5 kg × 9.81 m/s²) ÷ (1.225 kg/m³ × 0.05 × 0.0154 m²)) v_terminal ≈ 55.8 m/s or 201 km/h
Therefore, the estimated terminal velocity of an average-sized penguin falling head first is approximately 56 m/s or 201 km/h. Keep in mind that this is a simplified calculation based on several assumptions about the penguin's shape and the environmental conditions.
Re: Drone footage of fledging penguins jumping off cliff
#50For those who might be worried to click: the penguin chicks are fledging and going off to swim for the first time; they are not jumping to their doom.
Wow. Phrasing!