Frage von Jojo-bass:
Hello Forum!
I did a week ago a theatrical performance filmed and now the whole (mini-DV via firewire) to the PC through plays.
When the performance was both conventional light (Fresnel) as synonymous LED floodlights (RGB). The problem is that the LED - light on the video recordings strongly flickers. The conventional light.
Why? Can I remove the post?
If necessary, I can still synonymous accurate information on the used cameras / LED floodlights and so on.
Danke schon mal for the answers.
Jojo
Antwort von Quadruplex:
The problem is that the LED - light on the video recordings strongly flickers. (..) What is the reason? I understand these things are pulsed, so do not light up continuously. Then leads to similar problems such as neon tubes or monitors in the Picture.
Can I remove the post? I do not know how they can go. If you have a rather static camera work, you could try the screen with a soft draftsman / Logo filter, etc. to blur. Depends of your Nachbearbeitungs-/Schnittsoftware from.
Antwort von JMitch:
The LEDs themselves are not pulsed, which is the power supply that is not in DC zusätztlich and converts the waste stream at the "Polwechsel" does not compensate. As happens at 50Hz, ie. the same frequency of your Cam, ises either correct it or not.
Antwort von JMitch:
Views, the flickering only on a half field, so only the even or odd row. Test times with deinterlacer nem ...
Antwort von PeterM:
Should eigendlich LED lamps do not pulse with DC because they operate in applications, except the power supply is scrap.
If you still have access to the lamps have würd ich mal pr + fen whether they growl. you can see if you have a pen in front of the lamp quickly move.
One solution I have not
Antwort von JMitch:
Rather, I believe him the power of the LEDs inside was not a capacitor. If you have a bridge rectifier, so 4 diodes used in DC but he is very wavy. With a capacitor, the smoothed and the LEDs do not flicker anymore.
An LED on AC would be synonymous not survive long because they are always 50 times per second would be wrong polarity and because LEDs are very sensitive.
Antwort von JMitch:
The "LED lamps" are Pulsweitenmoduliert (PWM) to the different magnitudes of the different colors (red-green-blue) for color mixing to achieve. I knew not against what we could do. Since the frequency depending on the brightness / color changes and not always the same like you would with the "neon-60Hz problem."
Antwort von PeterM:
I think the last answer of the host it will be. Your LED Effeltleuchten then seem to be.
Events for LED lighting effect is synonymous DC-driven or with very high frequency operation in order to make it Kameratauglich
RGB Effelleuchten eg for household illumination as host has often been described Pulsweitenmoduliert. This applies to both RGB rods as synonymous for dimmable cheap products.
The reason is simple rel. In PWM operation, there is little dissipation when dimming.
Since you like in your first post described the model know that I would simply call the manufacturer.
If it is in fact driven PWM LED's are you regarding your video can make little.
Reminds me the question so'n bischen s.die Genockfrage some Tegen. I was never quite clear what the OP really wanted.
