OS/2, eCS & ArcaOS - Technical > Hardware

WebCam Driver Question

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Lars:

--- Quote from: David McKenna on January 23, 2021, 04:24:49 pm --- Well, I just tried Remy's 'WCC' program, along with Wim's latest UVC software, and video and audio from the Logitech C270 does indeed work! Bit of a mystery why sound doesn't work from the command prompt, but probably user error. Thanks Remy and Wim for putting it all together!

Regards,

--- End quote ---
What do you mean with "sound does not work"?
If it is about either USB sound input or sound output, I am currently working on fixing a couple of errors in the USB sound drivers. In particular if you have more than one USB audio capable device plugged in. Martin is helping me in testing.

David McKenna:

--- Quote from: Lars on January 24, 2021, 12:51:58 pm ---What do you mean with "sound does not work"?

--- End quote ---

 Lars,

 Sorry I wasn't specific - I meant I did not hear anything from the speakers when running 'wmaudio' next to 'webcam /a /n' (even though there were no errors in the command prompt windows). When I run 'WCC' I do hear sound from the speakers (slightly delayed). The only USB sound device plugged in here is the microphone on the webcam, although both of your USB sound drivers are installed.

Regards,

Martin Iturbide:

--- Quote from: Remy on January 24, 2021, 12:25:19 pm ---
--- Quote from: Martin Iturbide on January 23, 2021, 03:40:35 pm ---Thanks David.
I just created this page:  Logitech C270 HD Webcam

--- End quote ---

Logitech 9000 pro works good too

--- End quote ---

Hi Remy

Can you please share with me the HardwareID. I created this page: Logitech_QuickCam_Pro_9000
If you want you can also share with me the USB hardware report. Have you test mic recording?

Regards

Martin Iturbide:

--- Quote from: Wim Brul on January 23, 2021, 10:08:52 am ---It might be a good idea ;) to read the included webcam.txt file?


--- Code: ---┌───────────────┐                                                ┌────────────┐
│ Webcam Server ├────────────────────────────────────────────────┤ webcam.exe │
└───────────────┘                                                └────────────┘
.
Use "webcam /a" to run named pipe server for wav audio from the microphone.
┌──────────────────────┐                                        ┌─────────────┐
│ Webcam Monitor Audio ├────────────────────────────────────────┤ wmaudio.exe │
└──────────────────────┘                                        └─────────────┘
.
Plays pcm wave audio from the Webcam Server. Acts as named pipe client.
Use "wmaudio" to connect the Webcam Monitor Audio to \PIPE\Webcam\Audio.
Use e.g "wmaudio /a1/v30" to play on audio adapter 1 at reduced volume.
.

--- End code ---

--- End quote ---

Hi Wim

I wanted to test any kind of sound from my USB Webcam - Logitech C920 HD Pro Webcam
I'm using "Webcam00-20210120.zip" and Lar's USBAUDIO.

I get this error:

--- Code: ---[X:\HOME\DOWNLOADS\WEBCAM00-20210120]webcam /a /n
started.
format:mjpg
 acquire webcam
 set configuration
 negotiate video format
/a server (audio) On-Line.
 obtain video format
 commit video format
 set video alt interface
/n server (video) On-Line.
 set audio frequency
 starting iso video
 set audio mike volume
 set audio alt interface
 starting iso audio
[00000057]
obtain audio error.

--- End code ---
The camera lights up. "wmvideo /n" works and provide video


And


--- Code: ---[X:\HOME\DOWNLOADS\WEBCAM00-20210120]wmaudio /a3 /v100
started.
 opening audio input pipe
 opening ampmixer device
Unsupported format mode.
 closing audio input pipe
 closing event semaphore
 deallocating dart buffers
Invalid device ID given.
 informing dart use ended
Invalid device ID given.
 closing ampmixer device
Invalid device ID given.
stopped.


--- End code ---

Regards

Update: Updated to webcam latest version.

Lars:

--- Quote from: David McKenna on January 24, 2021, 02:59:25 pm ---
--- Quote from: Lars on January 24, 2021, 12:51:58 pm ---What do you mean with "sound does not work"?

--- End quote ---

 Lars,

 Sorry I wasn't specific - I meant I did not hear anything from the speakers when running 'wmaudio' next to 'webcam /a /n' (even though there were no errors in the command prompt windows). When I run 'WCC' I do hear sound from the speakers (slightly delayed). The only USB sound device plugged in here is the microphone on the webcam, although both of your USB sound drivers are installed.

Regards,

--- End quote ---
The problem could be that AN auto switches the default Wave device when you plug in a USB device. And WCC might be smart enough to select a specific audio device for playback while wmaudio might use the default device. Sometimes,automatisms are a bad choice. As in this case.

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