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by tvjon
Sat Oct 17, 2020 6:38 pm
Forum: Beginners
Topic: Pi 4 load for recording streams
Replies: 6
Views: 209

Re: Pi 4 load for recording streams

... I wonder if the Pi 4 can handle recording 2-3-4 simultaneous such streams from twitch at, say, 1080p 5-10kbit/s? Will there be frame drops / wild overheating / other troubles? It is planned that the file will be saved to an external hdd via usb 3.0 ... Thanks in advance for your reply. As your ...
by tvjon
Sat Oct 17, 2020 1:39 pm
Forum: Graphics, sound and multimedia
Topic: Building Krita from source on the pi4
Replies: 2
Views: 579

Re: Building Krita from source on the pi4

You've clearly put a lot of effort into this, thank you. This Pi4 2G here has reached about 72% before failing with ffmpeg related files, eg. /usr/bin/ld: /usr/local/lib/libavcodec.a(opusdec.o): in function `opus_decode_subpacket': /~/rpi-ffmpeg-dev-4.3.1-drm_prime_1/libavcodec/opusdec.c:346: undefi...
by tvjon
Wed Sep 16, 2020 4:27 pm
Forum: Troubleshooting
Topic: Raspberry - no Autostart omxplayer
Replies: 8
Views: 191

Re: Raspberry - no Autostart omxplayer

Hello People, I have a Raspberry pi 4 with 4GB RAM and Buster. my config is omxplayer.sh /home/pi/.config/autostart ...If I start the script on the desktop everything works. But unfortunately it doesn't work in autostart. Why? What made you put autostart there? Mine is /home/pi/.config/lxsession/LX...
by tvjon
Tue Sep 08, 2020 6:04 pm
Forum: Graphics, sound and multimedia
Topic: MIDI LOOPER BOX
Replies: 3
Views: 247

Re: MIDI LOOPER BOX

Setka wrote:
Tue Sep 01, 2020 5:44 pm
Hi,

... the raspberry play the files (BPM adjust via potentiometer) in loop.

...
Two pots : tempo( bpm) and file selection

...

Thx

There is no A2D on a Raspberry Pi, so you could look at rotary encoders instead.

Also look at:

https://www.samplerbox.org/

for ideas, along with their forum.
by tvjon
Tue Sep 08, 2020 3:11 pm
Forum: Troubleshooting
Topic: bluez-firmware (1.2-4+rpt5)
Replies: 5
Views: 202

Re: bluez-firmware (1.2-4+rpt5)

4B 2 GB

Any, so for example, file on SD card or usb discs, or local network, or remote site (ethernet). Several players exhibit the same behaviour, but I typically use omxplayer, so eg.,

$ omxplayer -o alsa somemusicfile


Wifi turned off.

.asoundrc attached.



HTH.
by tvjon
Mon Sep 07, 2020 4:24 pm
Forum: Troubleshooting
Topic: bluez-firmware (1.2-4+rpt5)
Replies: 5
Views: 202

Re: bluez-firmware (1.2-4+rpt5)

Less than 3 minutes should do fine. Prior to whatever caused them to disappear (I can't definitively say what, as I only occasionally tried audio bluetooth devices because nothing I tried seemed to make any difference). Over a 3 minutes music track I'd typically hear a second or so dropout 2 or 3 ti...
by tvjon
Mon Sep 07, 2020 3:18 pm
Forum: Troubleshooting
Topic: bluez-firmware (1.2-4+rpt5)
Replies: 5
Views: 202

bluez-firmware (1.2-4+rpt5)

Up until late July a2dp devices attached via RPI bluetooth always suffered random audio dropouts. Since then I've been able to enjoy listening via those devices - until today when I updated a few things, in particular: Setting up bluez-firmware (1.2-4+rpt5) ... Back to irritating random dropouts. So...
by tvjon
Fri Sep 04, 2020 1:07 pm
Forum: Graphics, sound and multimedia
Topic: Play cd with raspberry pi
Replies: 5
Views: 239

Re: Play cd with raspberry pi

Hello tvjon, When i start omx for listen a cd : https://www.casimages.com/i/200904011835960506.jpg.html ... Hello again. You missed off the closing inverted commas! Because there is a space in the file name, it's essential to enclose the name in quotes as I did in my example. "Track 6" for example....
by tvjon
Fri Sep 04, 2020 8:14 am
Forum: Graphics, sound and multimedia
Topic: Play cd with raspberry pi
Replies: 5
Views: 239

Re: Play cd with raspberry pi

... wan't to hear cd with my raspberry and throught my squeezebox and cdplayer plugin. Trouble : i can't read music cd on my raspberry...Have a good day everybody ! Initially try this to prove that you actually can play music from your CD's: https://www.raspberrypi.org/forums/viewtopic.php?p=171571...
by tvjon
Tue Sep 01, 2020 3:34 pm
Forum: Advanced users
Topic: HEVC transcoding on Raspberry Pi 4
Replies: 51
Views: 3351

Re: HEVC transcoding on Raspberry Pi 4

jc-kynesim wrote:
Tue Sep 01, 2020 1:52 pm
...
OK - I've got a patch that I hope will fix the green line issue - try branch dev/4.3.1/fix_v4l2_stride_1 ...
Thank you kindly for this. It does indeed work for a few small files I've tested. As time permits, I'll do more testing.
by tvjon
Wed Aug 26, 2020 6:48 pm
Forum: Advanced users
Topic: HEVC transcoding on Raspberry Pi 4
Replies: 51
Views: 3351

Re: HEVC transcoding on Raspberry Pi 4

... HW decode of 4:2:2 will never happen. We should be able to fall back to software and fix the green stripes. Can you upload sample file to google drive, dropbox or similar and provide a link? I don't currently have one of those accounts, but I'll try to setup one, & post this clip too, which is ...
by tvjon
Wed Aug 26, 2020 3:39 pm
Forum: Advanced users
Topic: HEVC transcoding on Raspberry Pi 4
Replies: 51
Views: 3351

Re: HEVC transcoding on Raspberry Pi 4

@jc-kynesim "Yeah that config includes debug symbols & doesn't strip the exes so it will be big." Ah, ok. I did think even with libs that was some file :) Where I am currently, I only have a couple of files handy to test, but I will test more later, and let you know if there's anything relevant. @do...
by tvjon
Wed Aug 26, 2020 1:52 pm
Forum: Advanced users
Topic: HEVC transcoding on Raspberry Pi 4
Replies: 51
Views: 3351

Re: HEVC transcoding on Raspberry Pi 4

@dom

as requested:
by tvjon
Wed Aug 26, 2020 1:36 pm
Forum: Advanced users
Topic: HEVC transcoding on Raspberry Pi 4
Replies: 51
Views: 3351

Re: HEVC transcoding on Raspberry Pi 4

Our codec guy replied with some info: In terms of what we can do with transcode - if you build ... [/quote] Static libs- impressive ffmpeg size, 97 megs! Everything I transcode has this set of green lines transposed throughout the clip. $ vcgencmd version Aug 24 2020 18:52:07 Copyright (c) 2012 Bro...
by tvjon
Thu Aug 20, 2020 9:50 pm
Forum: Graphics, sound and multimedia
Topic: Playing an audio CD with omxplayer
Replies: 7
Views: 314

Re: Playing an audio CD with omxplayer

...Does any know the command line to read an audio CD with omxplayer ? ... Nicolas I'm currently listening to track 12. $ omxplayer -o alsa /run/user/1000/gvfs/cdda:host=sr0/"Track 12.wav" Audio codec pcm_s16le channels 2 samplerate 44100 bitspersample 16 Subtitle count: 0, state: off, index: 1, de...
by tvjon
Mon Aug 17, 2020 11:09 pm
Forum: Troubleshooting
Topic: Audio bluetooth nor usable !
Replies: 8
Views: 309

Re: Audio bluetooth nor usable !

to tvjon : I 1st struggled with bluetoothctl, but no success. Then I found, and applied this tutorial : https://pimylifeup.com/raspberry-pi-bluetooth/ which allowed me to pair and connect my bluetooth speaker (Bose Revolve+), but it is still impossible to direct the audio to bluetooth (even when se...
by tvjon
Mon Aug 17, 2020 11:50 am
Forum: Troubleshooting
Topic: Audio bluetooth nor usable !
Replies: 8
Views: 309

Re: Audio bluetooth nor usable !

Actually, Audio bluetooth has improved recently, to the extent that I can now listen to a full album sans dropouts. Previously it couldn't manage 1 tune. For people to help you, it's important for you to help them. So, can you post what these "impressive lot of efforts to connect B/T speaker" actual...
by tvjon
Wed Aug 12, 2020 7:36 pm
Forum: Advanced users
Topic: Question: How to change audio volume ?
Replies: 12
Views: 447

Re: Question: How to change audio volume ?

Not to worry, but you did have me puzzled there!
The volume control is non-linear currently.

I can't remember after

jdb

vastly improved the internal audio whether it was linear at that time.
by tvjon
Wed Aug 12, 2020 5:17 pm
Forum: Advanced users
Topic: Question: How to change audio volume ?
Replies: 12
Views: 447

Re: Question: How to change audio volume ?

What is the content of

~/.asoundrc

& what does

$ aplay -lL

produce?
by tvjon
Wed Aug 12, 2020 4:29 pm
Forum: Advanced users
Topic: Question: How to change audio volume ?
Replies: 12
Views: 447

Re: Question: How to change audio volume ?

hippy wrote:
Wed Aug 12, 2020 3:43 pm
...os.system("omxplayer --no-keys ~/sdamot.mp3 > /dev/null 2>&1 &")
...
I don't know Python, but try changing that statement to:

"omxplayer -o alsa --no-keys ~/sdamot.mp3 > /dev/null 2>&1 &"
by tvjon
Wed Aug 12, 2020 3:33 pm
Forum: Advanced users
Topic: Question: How to change audio volume ?
Replies: 12
Views: 447

Re: Question: How to change audio volume ?

hippy wrote:
Wed Aug 12, 2020 3:12 pm
...
But how do I vary the audio volume from the command line ?
...
Hello hippy.

omxplayer is very versatile, playing either via alsa, or bypassing alsa completely.

How are you invoking omxplayer?

~$ omxplayer

will display a page of info'
by tvjon
Mon Aug 03, 2020 8:20 am
Forum: Beginners
Topic: Changing audio selection out with VLC Pi4
Replies: 2
Views: 160

Re: Changing audio selection out with VLC Pi4

...With this it's more difficult and reboot is required to make the change . Can't it be done another way Right click on the volume works and show all the options . thanks Lee It isn't necessary to reboot, but it does appear to be one of RPi VLC's bugs, in that VLC ignores the RPi 4 menu's setting ...
by tvjon
Sun Aug 02, 2020 11:19 am
Forum: Beginners
Topic: Alsa volume control in background
Replies: 5
Views: 398

Re: Alsa volume control in background

"But what if your not using desktop."

Read & digest Dougie Lawson's signature.


Whilst omxplayer is playing your tune, press your keyboard + key to increase the volume, - for the opposite.
by tvjon
Sun Aug 02, 2020 7:54 am
Forum: Beginners
Topic: Alsa volume control in background
Replies: 5
Views: 398

Re: Alsa volume control in background

That already happens. Refer to the picture I posted in your I2S thread yesterday: this time left click the speaker icon, & as you press either volume up or down on your keyboard (in my case they're shared with F6 & F7 function keys), the vertical slider will raise or lower & adjust the volume accord...

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