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by tvjon
Mon Feb 24, 2020 8:44 am
Forum: Graphics, sound and multimedia
Topic: RPi4 : How to record desktop audio ?
Replies: 41
Views: 1882

Re: RPi4 : How to record desktop audio ?

I use mplayer (sudo apt install) & omxplayer (mostly for radio station recording) without problems. For omxplayer I specifically tell it to use alsa, else (as mentioned already) it wonuldn't record.
by tvjon
Sun Feb 23, 2020 10:13 pm
Forum: Graphics, sound and multimedia
Topic: RPi4 : How to record desktop audio ?
Replies: 41
Views: 1882

Re: RPi4 : How to record desktop audio ?

@Pulsar33, is this the same kind of sound you here?

If not, post a short sample please.

What version of vlc?
by tvjon
Sun Feb 23, 2020 9:33 am
Forum: Graphics, sound and multimedia
Topic: RPi4 : How to record desktop audio ?
Replies: 41
Views: 1882

Re: RPi4 : How to record desktop audio ?

I'm still rather busy I'm afraid.

I built it last night & it works fine thank you.

I'll try to take a look at vlc, -s 48k later today.

HTH
by tvjon
Thu Feb 20, 2020 5:43 pm
Forum: General discussion
Topic: USB image writer
Replies: 50
Views: 1849

Re: USB image writer

"Not really. It is the Linux kernel that's fussy. If your user don't have write permissions, then the Linux kernel won't allow any application to write. " So how did a successful write to a USB flash drive occur yesterday? "You can't access the GPIO pins either if you're not in the "gpio" group." Ye...
by tvjon
Thu Feb 20, 2020 12:46 pm
Forum: General discussion
Topic: USB image writer
Replies: 50
Views: 1849

Re: USB image writer

Re the latest version: gcc still doesn't like this type as you can see. usbimager is very fussy about the target disc, eg., disks_open(/dev/sdb) fd=-1 errno=13 err=Permission denied Worker thread finished. I changed disc, even reformatted to ext4, but no joy,. & in fact now (each pair is a click on ...
by tvjon
Wed Feb 19, 2020 9:22 pm
Forum: General discussion
Topic: USB image writer
Replies: 50
Views: 1849

Re: USB image writer

Ok, the usb stick works fine.

Here's the make output for the built usbimager, now showing only 1 warning.
by tvjon
Wed Feb 19, 2020 6:01 pm
Forum: General discussion
Topic: USB image writer
Replies: 50
Views: 1849

Re: USB image writer

I have an idea, I'll introduce "-vv" and print out everything. Please bare with me, I'll upload this version soon. ... Cheers, bzt Right, just back in. Built it as you've supplied it first, as I think you'll be relieved to know the segfault has gone away. My system, as requested: 32 bits $ vcgencmd...
by tvjon
Wed Feb 19, 2020 12:23 pm
Forum: Graphics, sound and multimedia
Topic: RPi4 : How to record desktop audio ?
Replies: 41
Views: 1882

Re: RPi4 : How to record desktop audio ?

1° With a raspbian_full distribution, you need to install the "lame frontend" to get the "lame" command 2° With a raspbian_full distribution, I had no .asoundrc file in ~/ so I simply installed yours and reboot 3° Every time some sound is played through my HDMI 0 port, a mp3 file is created in /tmp...
by tvjon
Wed Feb 19, 2020 11:57 am
Forum: General discussion
Topic: USB image writer
Replies: 50
Views: 1849

Re: USB image writer

Dear All, I've completely rewritten the UI for low-level X11, not using any widget toolkits nor frameworks. ... Cheers, bzt Ok, some short feedback. If I get time later today I'll look further. It can now be built from make as is in your new version. I still get the types warnings. This version I c...
by tvjon
Mon Feb 17, 2020 11:22 am
Forum: General discussion
Topic: USB image writer
Replies: 50
Views: 1849

Re: USB image writer

... Right now this tool is experimental . It compiles without errors on all platforms, and I did all the basic tests. I'm now looking for brave volunteers for beta testers and contributors. I have only limited set of USB sticks, and my access to MacOSX and Windows machines is also limited, so testi...
by tvjon
Thu Feb 13, 2020 8:47 pm
Forum: Graphics, sound and multimedia
Topic: RPi4 : How to record desktop audio ?
Replies: 41
Views: 1882

Re: RPi4 : How to record desktop audio ?

For information, Firefox ESR and chromium are installed on my RPi4... You might like to see if this records your "desktop" audio? I don't have firefox installed currently, so my testing uses the Chromium browser, along with various radio stations. Attached is a .asoundrc which needs to go into ~/ I...
by tvjon
Thu Feb 13, 2020 12:41 pm
Forum: Graphics, sound and multimedia
Topic: aplay can't play audio to hdmi out
Replies: 5
Views: 168

Re: aplay can't play audio to hdmi out

I use Rpi 3B+, and install almost latest Raspbian (last year). I tried to use hdmi to play audio files, but failed. I use the command: aplay -D hw:0,1 test.wav But there nothing happend. I... For hdmi I use: aplay -D hw:0,0 ... which should work for you. Any reason you chose 1? Also, post the conte...
by tvjon
Fri Jan 31, 2020 2:10 pm
Forum: Graphics, sound and multimedia
Topic: RPi4 : How to record desktop audio ?
Replies: 41
Views: 1882

Re: RPi4 : How to record desktop audio ?

... How can I record the desktop audio (while surfing the www for example) ? ... Pulsar33 Do you want to record ALL your "desktop" audio, clicks, pops, etc., or just browser output, & which browser? I do roughly what you want, but usually, only for omxplayer output, where I sometimes invoke omxplay...
by tvjon
Mon Jan 27, 2020 10:50 pm
Forum: General discussion
Topic: how to save a picture from rtsp camera
Replies: 10
Views: 435

Re: how to save a picture from rtsp camera

tvjon, Nice of you to make the link to rtmp://otaniemi.conveqs.fi/video/mykey ... Have you actually done that with success? Thank you for making it available. It's always useful to have a trusted source. I couldn't think of anything really relevant to post to your thread, I'm afraid. Yes, works fin...
by tvjon
Mon Jan 27, 2020 2:05 pm
Forum: General discussion
Topic: how to save a picture from rtsp camera
Replies: 10
Views: 435

Re: how to save a picture from rtsp camera

... I would love to save a picture from that videostream every x hours to use it with an application i am doing with machine learning on my Raspberry pi 3modelb+ ... thanks Do you only need a timed interval between captured pictures, rather than any analysis of their content, & are you using vlc on...
by tvjon
Sat Jan 25, 2020 11:11 pm
Forum: General discussion
Topic: HDMI over ethernet
Replies: 3
Views: 273

Re: HDMI over ethernet

... It's HDMI over ethernet. Has anyone gotten this to work? I am plugging an adapter into the Pi via HDMI then running ethernet to another adapter which then plugs into the monitor's HDMI. ... I'm using a SAC extender on this RPi4 connected to a 1920*1080p monitor as I type this reply, so yes it w...
by tvjon
Tue Jan 21, 2020 5:37 pm
Forum: Troubleshooting
Topic: Am I connected to eth0?
Replies: 2
Views: 183

Re: Am I connected to eth0?

$ ifconfig eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.1.101 netmask 255.255.255.0 broadcast 192.168.1.255 inet6 fe80::7ae2:93ca:2440:d840 prefixlen 64 scopeid 0x20<link> ether dc:a6:32:01:9e:4f txqueuelen 1000 (Ethernet) RX packets 60856 bytes 58344603 (55.6 MiB) RX error...
by tvjon
Fri Jan 17, 2020 5:16 pm
Forum: Graphics, sound and multimedia
Topic: need help: aplay to usb headphones
Replies: 7
Views: 340

Re: need help: aplay to usb headphones

"got it, I think I'll use WAV instead of OGG then.

I appreciate your help!
have a great weekend."

Yes, that's a good idea, especially considering your samples are relatively small.

:)

You too, & all the best for your RPi projects.
by tvjon
Fri Jan 17, 2020 9:44 am
Forum: Graphics, sound and multimedia
Topic: need help: aplay to usb headphones
Replies: 7
Views: 340

Re: need help: aplay to usb headphones

"...I would prefer to use aplay instead since it loading time is faster than omxplaer..." Note my comment, "Your samples play fine in *alsaplayer* (www.alsaplayer.org) & omxplayer", NOT aplay. Aplay will start up faster than applications, but it doesn't know how to play anything other than its liste...
by tvjon
Fri Jan 17, 2020 1:40 am
Forum: Graphics, sound and multimedia
Topic: need help: aplay to usb headphones
Replies: 7
Views: 340

Re: need help: aplay to usb headphones

Your samples play fine in alsaplayer & omxplayer. Presumably you have pavucontrol installed, as you're using pulseaudio? If not, install it. I don't have usb headphones, but several usb audio "cards", a couple of which I used for testing this. Even if you have only USB phones in a Pi0, (raspbian) Bu...
by tvjon
Thu Jan 16, 2020 3:12 pm
Forum: Graphics, sound and multimedia
Topic: need help: aplay to usb headphones
Replies: 7
Views: 340

Re: need help: aplay to usb headphones

As they're so short, can you zip up & attach a couple of the samples?

Also what's in:

~/.asoundrc
by tvjon
Sun Jan 12, 2020 5:06 pm
Forum: Troubleshooting
Topic: Chromium not playing LBC Radio
Replies: 4
Views: 182

Re: Chromium not playing LBC Radio

Hi All ... it will not play LBC Radio https://www.globalplayer.com/live/lbc/uk/ as it has in the past. Anything to do with Chromium? Any ideas? It's interesting that you use a heavyweight web browser on a raspberry pi to listen to a radio station. I'm listening to it via their AAC codec, so decent ...
by tvjon
Wed Dec 18, 2019 10:45 am
Forum: Camera board
Topic: One camera, 2 preview windows. Is this possible?
Replies: 9
Views: 892

Re: One camera, 2 preview windows. Is this possible?

thendualism wrote:
Tue Feb 05, 2019 11:45 pm
...t is there any way to do it such that there are two preview windows side by side? (Similar to VR output)...
Something like this perhaps?

https://www.raspberrypi.org/forums/view ... 1&t=187070

I'm afraid I have no idea about picamera or python.
by tvjon
Thu Dec 05, 2019 11:10 pm
Forum: Advanced users
Topic: VL805 firmware release 0137ac - improved USB downstream power switching
Replies: 15
Views: 2009

Re: VL805 firmware release 0137ac - improved USB downstream power switching

The only reason I mentioned it was because I *did* unmount the disc as I normally do, before issuing the relevant commands.

However 2 disc icons appeared back.

Also note the spelling error in the window message.

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