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- Joined: Sun Apr 14, 2013 6:59 pm
I'm experimenting with LTC timecode.
Coming from GH5 and the BMPCC, I never had the luxury of a camera (or audio recorder) that did support LTC natively.
For testing purposes I have a cellphone generate an LTC timecode in the proper frame rate.
(On stage we will have a proper 19" time base later but I need to verify that this is working to justify the expense.)
A special cable removes any DC (plug in power) from the microphone input and brings the headphone signal down to mic level on one stereo channel while allowing a regular microphone on the other stereo channel. So we still have regular sound to sync if the timecode idea fails.
In the camera and with a variable resistor on the cable I can tune it down to -10dB or 0dB mic level
or see about -32dB line level on the camera display.
(I'm afraid to give my expensive camera a 2Vpp or 3Vpp signal into the 1/8" TRS input designed for 1V line or the lower mic level without anything in the user manual stating that this is supported.)
Never did the camera indicate the [EXT] icon to show that a timecode has been detected.
Resolve on the other hand instantly detected the timecode and when I manually changed the timecode in the clip properties and then used "Update timecode from audio - LTC" it worked instantly.
The manual only says "The microphone input also accepts SMPTE compliant
LTC timecode from an external source." but does not give any details.
Coming from GH5 and the BMPCC, I never had the luxury of a camera (or audio recorder) that did support LTC natively.
For testing purposes I have a cellphone generate an LTC timecode in the proper frame rate.
(On stage we will have a proper 19" time base later but I need to verify that this is working to justify the expense.)
A special cable removes any DC (plug in power) from the microphone input and brings the headphone signal down to mic level on one stereo channel while allowing a regular microphone on the other stereo channel. So we still have regular sound to sync if the timecode idea fails.
In the camera and with a variable resistor on the cable I can tune it down to -10dB or 0dB mic level
or see about -32dB line level on the camera display.
(I'm afraid to give my expensive camera a 2Vpp or 3Vpp signal into the 1/8" TRS input designed for 1V line or the lower mic level without anything in the user manual stating that this is supported.)
Never did the camera indicate the [EXT] icon to show that a timecode has been detected.
Resolve on the other hand instantly detected the timecode and when I manually changed the timecode in the clip properties and then used "Update timecode from audio - LTC" it worked instantly.
The manual only says "The microphone input also accepts SMPTE compliant
LTC timecode from an external source." but does not give any details.