Video recorder not recording audio #sdrconsolev3
On Mon, Mar 30, 2020 at 09:30 PM, goscickiw wrote:
I tried the video recorder feature, but the resulting videos don't have any sound. Is this a bug, or a setting I missed somewhere? I tried setting the audio in the video recorder options to AAC and MP3 with no difference.
Best regards,
Wojciech Gościcki
I think I found your problem. I did a few tests and found that SDRC will not record any audio on the video recording unless default audio playback device in Windows is set to (in my case) speaker out, i.e. the analogue output from the soundcard. It does not seem to make any difference what selection is made in the SDRC audio playback device selector (top of the DSP panel), but the default playback device in Windows must be set to produce "audible" audio from the analogue out.
So go to Windows Start menu, type "Audio Devices" and in the Audio Devices dialogue (see picture), I would be willing to bet that you have default playback device set to VAC, Line 1 or something digital route other than the analogue audio out device. Set default playback device to "Speakers" and it hopefully will now record with audio (see attached picture). I was able to reproduce this very reliably. What is odd is that with the default playback device in Windows set to VAC, and SDRC sound then routed to VAC in the DSP panel, it still generated mute recordings, even though I can see audio is reaching the VAC . But I did then get audio if I used "Audio Repeater" (software obtainable to "listen" to audio from VAC on speakers) to route the audio through from VAC to the analogue audio out of my PC soundcard.
I wonder if Simon could perhaps take a look and see where the audio for video recording is actually being obtained? I have a feeling it may not be quite correctly routed to take the digital audio straight from SDRC? It seems to only record audio when that audio is being routed to the analogue audio out from the soundcard, in my case anyway? I would guess you have the same situation. Any thoughts Simon?
73
Max
On Tue, Mar 31, 2020 at 10:34 PM, goscickiw wrote:
Yes, I have read this, but there's nothing that would describe a problem like mine. As you can see in my sample, I have a receiver with 100% volume and not muted. I can hear the sound normally while recording, but the recording itself is silent. Also I don't get any error messages.
I have the VB-Cable, A/B, C/D, and VoiceMeeter Banana installed, but I weren't passing any audio through them while using the video recorder. Could they be interfering somehow with the video recorder being able to access audio to record?
It worked. The audio was recorded properly.
Could this be because my main speaker out is 5.1, and the headphone out is stereo?
Or because I use a weird re-branded motherboard that none of the audio drivers seem to work 100% right on? (I'll probably have to replace it soon...)
(also it's not because I moved SDR Console to my main screen, I did another test on the main screen with speakers as default and there was no audio again)
Maybe needs others to test the theory by messing about changing the Windows default Audio Device.
Other than that Simon might be able to explain how the audio is routed from SDRC to the video recorder? Any idea what is going on here Simon?
Anyway, glad it is (sort of) solved even if not very satisfactory.
73
Max
I think to get further we need to know more from Simon about how he routes audio to the video recorder. Also some others to try and simulate the issue we are both having and ideally someone with a different audio chipset to see if it is related to that.
73
Max
In the past I had problems with the audio setup so I tried the drivers from the ASUS M51AC driver page, the ASUS H87M-PRO driver page, and directly from Realtek, eventually decided that the default drivers installed by Windows work best.
Hi,
Audio is only recorded from the active receiver, I see no valid reason why the audio isn’t added to your recording.
Simon Brown, G4ELI
https://www.sdr-radio.com
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of goscickiw
Sent: 01 April 2020 18:05
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Video recorder not recording audio #sdrconsolev3
Also checked if it was a problem with the test version 3.0.22 - but the released 3.0.20 version has the same problem.
I have the VB-Cable, A/B, C/D, and VoiceMeeter Banana installed, but I weren't passing any audio through them while using the video recorder. Could they be interfering somehow with the video recorder being able to access audio to record?
I don't know how you do the recording in code, but maybe it's a problem with one of the libraries you use for it?
I don't have any problems when using the audio recorder, are you using a different method for it?
Maybe it's a problem with something (a codec?) I don't have, or have installed improperly?
Also have you tried this with your own sound card?
Wojciech and I can both reproduce this very reliably. Have you tried changing the default playback device in "Audio Devices" on your own machine to try and reproduce? I am thinking that for most people they will have "speakers" set as default playback device here. It might just be that most don't see the issue just by accident, or conversely may be something about the Realtek chipset present on Asus mobos that is the issue? Might be worth seeing if you can reproduce the issue too?
I was not aware of any issue until I tried to reproduce it for Wojciech and discovered by trial and error.
73
Max
Hi,
Audio is only recorded from the active receiver, I see no valid reason why the audio isn’t added to your recording.
Max,
It’s nothing to do with the chipset, I send the audio to the video recorder before it is sent to the audio output thread.
You can help me by describing the test – audio selection Default, VAC, Speakers and when using Default then the Default device selection. In short, explain exactly what I have to do to see this problem.
Simon Brown, G4ELI
https://www.sdr-radio.com
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of Max
Sent: 02 April 2020 10:38
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Video recorder not recording audio #sdrconsolev3
Hi Simon
Wojciech and I can both reproduce this very reliably. Have you tried changing the default playback device in "Audio Devices" on your own machine to try and reproduce? I am thinking that for most people they will have "speakers" set as default playback device here. It might just be that most don't see the issue just by accident, or conversely may be something about the Realtek chipset present on Asus mobos that is the issue? Might be worth seeing if you can reproduce the issue too?
I was not aware of any issue until I tried to reproduce it for Wojciech and discovered by trial and error.
73
Max
On Thu, Apr 2, 2020 at 07:50 AM, Simon Brown wrote:
Hi,
Audio is only recorded from the active receiver, I see no valid reason why the audio isn’t added to your recording.
Hi,
Makes no sense but obviously a bug in Console. Try switching back to speakers, make sure you’re hearing audio while creating a video recording.
Simon Brown, G4ELI
https://www.sdr-radio.com
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of goscickiw
Sent: 01 April 2020 19:52
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Video recorder not recording audio #sdrconsolev3
I set the headphone out (that I actually use as a secondary line out) as default, and made a recording.
It worked. The audio was recorded properly.
Could this be because my main speaker out is 5.1, and the headphone out is stereo?
Or because I use a weird re-branded motherboard that none of the audio drivers seem to work 100% right on? (I'll probably have to replace it soon...)
(also it's not because I moved SDR Console to my main screen, I did another test on the main screen with speakers as default and there was no audio again)
Hi,
Audio is only recorded from the active receiver, I see no valid reason why the audio isn’t added to your recording.
Simon Brown, G4ELI
From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> On Behalf Of goscickiw
Sent: 01 April 2020 18:05
To: main@SDR-Radio.groups.io
Subject: Re: [SDR-Radio] Video recorder not recording audio #sdrconsolev3
Also checked if it was a problem with the test version 3.0.22 - but the released 3.0.20 version has the same problem.
I have the VB-Cable, A/B, C/D, and VoiceMeeter Banana installed, but I weren't passing any audio through them while using the video recorder. Could they be interfering somehow with the video recorder being able to access audio to record?
You can help me by describing the test – audio selection Default, VAC, Speakers and when using Default then the Default device selection. In short, explain exactly what I have to do to see this problem.
I tested on Default in SDRC. In my case, the video recorder doesn't record audio when the Windows (NOT SDR Console!) default audio output device is set to speakers (Example of such a recording is in my first and fourth post in this thread).
However, it records properly when I switch it to headphone out (Example can be found in my fifth post. WARNING: There is SQUELCH so don't be confused by the silence at the beginning of the video. Sound is later. Edit: Just to clarify, the previous recordings were made with squelch OFF).
(I have the headphone out and speaker out configured as separate devices, so speakers don't switch off when I plug something into the headphone output)
The SDR Console's settings don't seem to affect this problem, only the Windows settings.
To reproduce the problem, follow these steps:
1. Make a recording with the video recorder
2. Change the Windows default audio output device to something else (do not change anything in SDR Console)
3. Restart SDR Console
4. Make another video recording
5. Compare the sound in the recordings
On Thu, Apr 2, 2020 at 01:52 PM, Simon Brown wrote:
Makes no sense but obviously a bug in Console.
I'm just as confused by this as you are. My basic computer knowledge tells me it just shouldn't be possible for it to behave like that.
All as described a few messages earlier in this thread ( https://sdr-radio.groups.io/g/main/message/54871 )
Best
Max
You can help me by describing the test – audio selection Default, VAC, Speakers and when using Default then the Default device selection. In short, explain exactly what I have to do to see this problem.
Simon Brown, G4ELI
https://www.sdr-radio.com