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Audio

Welcome to the PTZOptics forum(s)!


This thread has been created for end users to discuss the topic of the line level audio input when getting started with the PTZOptics cameras.


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The PTZOptics camera line features an audio input on the back panels for most models.


The connection is a 3.5mm stereo unbalanced line level input that will not supply any power.


The camera does not feature any amplifier or pre-amplifier capabilities.


The levels of the audio input are set in the audio section of the IP interface


Once properly connected you will find the audio feed available via the following channels

  • IP (RTP / RTSP / RTMP) *AAC Only
  • NDI
  • USB 3.0 B (USB Models only)
  • HDMI

Note if you are unable to get audio to travel via your HDMI output please check the cameras OSD, On Screen Display, using the remote or web interface and navigate to the "Setup" section and make sure that the "DVIMode" is set for "HDMI." note this may require a reboot of the camera to fully commit.



Matthew,

My camera doesn't seem to be putting audio on the HDMI output. I have done everything that you mentioned in your post above. Any other ideas? I have the PT20X SDI GY G2 model. 

Is there a new firmware version? Mine is SOC v6 2.40-ARM v6 3.08THI


any help would be appreciated

Eric

Hi Eric,


I believe this should be working with your current firmware revision.


That being said there is an updated version of the firmware for your model available.


You can find the latest firmware by visiting the PTZOptics Firmware Finder and supplying your serial number to obtain the proper firmware.


Once you have successfully loaded the latest firmware try the steps again to enable HDMI audio output via the OSD.


Of note the 3.5mm audio input on the camera will only accept a line level signal that does not require any power from the camera to operate.


This can be a cell phone, laptop or PC or a powered mic to name a few examples.


There is one other thing I would check in the cameras WebUI and in the "Audio" section


I would make sure that the "audio switch:" is set for "On"


The other default values would be as follows: Audio Type: AAC, Sample Rate: 48K, Bit Rate: 96k, Input Type: Line In, Input Vol L: 8, Input Vol R: 8, ADTS Options: Off


Once set click the "Apply" button and reboot the camera.


I hope that the update or additional settings to check solves your issue but if it does not please make sure to reach out to the PTZOptics support team by submitting a ticket here:


https://help.ptzoptics.com/support/tickets/new


One of our team members will be happy to assist you in further diagnosing the problem if needed.


If anything above does solve your issue we'd love to hear about it.

Matthew,

Thank you so much for replying. I appreciate your helpful suggestions and all the great links.

I'll update the firmware and see if that's the problem. 

I'm getting audio out of the RJ45 jack. I can stream on youtube with audio from that connection just fine, which is why I'm scratching my head as to why the HDMI doesn't have audio. 

If I'm able to fix the problem I'll report back and post my solution, hopefully it will help others. 

thanks again

Eric

Hi Eric,


It is absolutely my pleasure to try and assist.


If you're getting audio in the network stream that certainly eliminates any WebUI settings as the cause.


And if the OSD Setting for DVIMode is set to HDMI everything should be flowing nicely.


I'm keeping my fingers crossed over here that a simple firmware update will resolve this.


If unresolved by a firmware update definitely get in contact with our support team to take the testing further and possibly RMA the camera.



Hello Matthew,

I apologize for the long response. I did fix the problem. We have our camera mounted under a balcony. The nearest power source is about 7 feet away. The camera's power supply is connected to a 6 strip with a power switch. I read in one of your posts that the camera should be turned off and on again. I was doing this at the power switch of the 6 strip. For some reason that wasn't power cycling the camera so it would reset, but when I used the power switch at the base of the camera it restored audio to the HDMI connector-I had to get a tall ladder to do it but it worked!!


Thanks for all your helpful suggestions

Eric

Hi Eric,


That is certainly an odd one.


I could garner guesses but they would be guesses at best :-)


Very glad to hear everything is now working as expected.


If you have any questions in the future don't hesitate to come back.

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