magic lantern 550d and audio monitoring at DVinfo.net

Brian Tori · January 27th, 2011, 04:13 PM

will the latest firmware update allow audio monitoring through the a/v out jack? if so, can the volume be controlled?

Keith Forman · January 27th, 2011, 04:47 PM

I think it can be monitored already. It is line level (−10 dB) so you can't just put earphone on it. You'll need a small amplifier. Maybe there is a hack to make an amp from an old MP3 player....

Brian Tori · January 27th, 2011, 05:10 PM

I should have said monitoring through headphones. Apparently the magic lantern software has output level control. I would like to know if it works and if the level can be adjusted.

Keith Forman · January 27th, 2011, 05:11 PM

No. Not without an amplifier.

Greg Fiske · January 27th, 2011, 05:48 PM

I thought I read you can. Why not install it and find out?

"I also was able to get headphone monitoring up."
http://www.dvinfo.net/forum/canon-eo...lantern-6.html

Renny Hayes · January 27th, 2011, 05:59 PM

Output is currently through the USB port, so you'll need an adapter or headphones with the same kind of audio-to-USB interface that Canon chose uses. In early test versions, audio would come out so hot that it would clip headphones, so I don't think volume is a problem.

However, the way ML now handles audio monitoring may be completely different than the aforementioned test builds. As such, I have no idea how it works now, I just know it is possible to get a very loud signal out of the camera.

January 27th, 2011, 04:13 PM	#1
Brian Tori Major Player Join Date: Nov 2004 Location: Detroit, MI Posts: 408	magic lantern 550d and audio monitoring will the latest firmware update allow audio monitoring through the a/v out jack? if so, can the volume be controlled?

January 27th, 2011, 04:47 PM	#2
Keith Forman Regular Crew Join Date: Mar 2008 Location: Williamstown Mass Posts: 192	I think it can be monitored already. It is line level (−10 dB) so you can't just put earphone on it. You'll need a small amplifier. Maybe there is a hack to make an amp from an old MP3 player....

January 27th, 2011, 05:10 PM	#3
Brian Tori Major Player Join Date: Nov 2004 Location: Detroit, MI Posts: 408	I should have said monitoring through headphones. Apparently the magic lantern software has output level control. I would like to know if it works and if the level can be adjusted.

January 27th, 2011, 05:11 PM	#4
Keith Forman Regular Crew Join Date: Mar 2008 Location: Williamstown Mass Posts: 192	No. Not without an amplifier.

January 27th, 2011, 05:48 PM	#5
Greg Fiske Major Player Join Date: Nov 2010 Location: Santa Ana, CA Posts: 499	I thought I read you can. Why not install it and find out? "I also was able to get headphone monitoring up." http://www.dvinfo.net/forum/canon-eo...lantern-6.html

January 27th, 2011, 05:59 PM	#6
Renny Hayes Regular Crew Join Date: Dec 2010 Location: Chicago, IL Posts: 26	Output is currently through the USB port, so you'll need an adapter or headphones with the same kind of audio-to-USB interface that Canon chose uses. In early test versions, audio would come out so hot that it would clip headphones, so I don't think volume is a problem. However, the way ML now handles audio monitoring may be completely different than the aforementioned test builds. As such, I have no idea how it works now, I just know it is possible to get a very loud signal out of the camera.