#Speed of sound in fps pro

I thought she was going to hyperventilate and pass out and the 3x footage was mostly unusable. The song was going incredibly fast and the poor girl could never keep up with the music and deal with her choreography. I shot a music video once where they tried to do a 3x and have the singer dance and do various acrobatics and it was a nightmare. Most people do this sort of work with a 2x factor (48 fps), as the math is much easier and the timecode for syncing is as well (simply dropping every other number). Use that playback as your guide for the singer to lip sync to and when you then transfer the image at normal speed you use the original normal speed audio and it should match perfectly.Ģ9.97 video has nothing to do with any of this unless I'm completely missing what you're asking here.

#Speed of sound in fps pro

So assuming you're shooting a music video (this is what most people do this sort of thing for) and you wish to have the people move in slow motion, you need to take your original audio source and speed it up by a factor of 1.5x before shooting (you can do this easily enough in a sound program like Pro Tools). If on the other hand, you are shooting at 36fps to transfer back at 24fps, your image will be slowed down by a factor of 1.5x, so you need to do the same to your audio. But the image speed would be the same as you shot it so the sound would be as well. If you are shooting film at 36fps and then transferring it back at 36fps (on a Meta-speed transfer), then the motion will be the same, although I have no clue as to why you want to do such a thing. Sound doesn't care what speed you shoot picture at as long as you play back that picture at the same speed. V-Sync is an option too but can introduce some latency that an FPS cap by. It is also used in the Canadian rail system, though the Canadian road systems use km/h.įoot/second to Mile/hour Conversion Table Foot/second ġ5 ft/s = 15 × 0.6818181818 mi/h = 10.If I read this correctly it ends up as a trick question. What does coil whine sound like, how does it affect your hardware, and how can. It is most widely used in the United States, the United Kingdom, and their related territories. One mph equals exactly 1.609344 kilometers per hour (km/h).Ĭurrent use: Along with km/h, mph is most typically used in relation to road traffic speeds. It expresses the number of statute miles traveled over the period of one hour. Mile/hourĭefinition: The unit miles per hour (symbol: mph) is a measurement of speed in the imperial and United States customary systems. As a result, the speed of sound is the maximum in solids and the minimum in gases. The higher the sound speed, the greater is the elasticity and the lower is the mass. The foot per second is also a relatively small unit of measurement making it difficult for use on a larger scale. The speed of sound in a given medium depends on the elasticity and density of that medium. The meter per second is the preferred measurement in scientific contexts, and either miles per hour or kilometers per hour are more common in everyday use for describing road speeds. At 20 ☌ (68 ☏), the speed of sound in air is about 343 metres per second (1,125 ft/s 1,235 km/h 767 mph 667 kn), or one kilometre in 2.91 s or one mile in 4.69 s. The faster the medium, the faster the sound will travel. The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. The speed of sound is affected by the temperature of the medium it is traveling through. This is the speed of sound at a temperature of 35 degrees Celsius, which is the normal human body temperature. History/origin: The foot per second is a measurement based in systems like the imperial and United States customary systems of units, where the foot is the preferred unit of length.Ĭurrent use: The foot per second is not widely used. The speed of sound at 35 C is 343.2 meters per second. It is also equal to 0.592484 knots and 0.681818 miles per hour. It is equal to 0.3048 meters per second, the International System of Units (SI) derived unit of speed and velocity. Definition: A foot per second (symbol: ft/s) is a unit of speed and velocity that expresses the time taken in seconds to travel a specific distance in feet.