VIDEO RECORDING for Kdenlive [Solved]

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Silver Surfer
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VIDEO RECORDING for Kdenlive [Solved]

Postby Silver Surfer » Thu May 18, 2017 3:11 pm

Hi Guys,
I’m using linuxmint 18 sarah
I want to record a personal video for use in Kdenlive..
If I use kdenlive 16.12.3 and set it into recording mode, as soon as I hit the record button Kdenlive crashes and closes.
If I use guvcview, it won’t record sound.
Can anyone suggest a video recorder program with sound that actually works! or can help a geriatric newbie to Linux, to achieve what ought to be a simple task.

Silver Surfer :oops:
Last edited by Silver Surfer on Sat Jun 03, 2017 6:38 am, edited 2 times in total.

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Flemur
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Re: VIDEO RECORDING for Kdenlive

Postby Flemur » Thu May 18, 2017 3:17 pm

Silver Surfer wrote:If I use guvcview, it won’t record sound.

It might be easy to correct that - have you used 'pavucontrol' ?
https://bbs.archlinux.org/viewtopic.php?id=181718
Mint 18.2 Xfce/fluxbox/pulse-less - Xubuntu 16.10/fluxbox/pulse-less
Please edit your original post title to include [SOLVED] if/when it is solved!
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Re: VIDEO RECORDING for Kdenlive

Postby Silver Surfer » Thu May 18, 2017 4:57 pm

Hi Flemur,
Thanks for coming back. Yes I had read that post and ran the command line suggested but it responded with "pact" not a recognised command. See below:-

No command 'pact' found, did you mean:
Command 'pat' from package 'dist' (universe)
Command 'pack' from package 'liballegro4-dev' (universe)
Command 'paco' from package 'paco' (universe)
Command 'act' from package 'artemis' (universe)
Command 'dact' from package 'dact' (universe)
Command 'pac' from package 'lpr' (universe)
Command 'pactl' from package 'pulseaudio-utils' (main).

Command 'pacat' from package 'pulseaudio-utils' (main)
pact: command not found.

As a newbie to linux, I am fearful of annoying the COMMAND LINE GOD so didn't know where to go from there. I do have pulse audio installed.

Can you enlighten me re 'pavucontrol' where is it, and what do I do with it.
Thanks,
Silver Surfer
Linuxmint KDE 18.1 Serena on Acer 5920G 64bit Laptop: Intel core 2 T7300, 2GHz, 2Gb DDR2, 500Gb HDD. Newbie to Linux.

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Re: VIDEO RECORDING for Kdenlive

Postby Flemur » Thu May 18, 2017 5:05 pm

Silver Surfer wrote:Yes I had read that post and ran the command line suggested but it responded with "pact" not a recognised command.


It is not 'pact', it is:

Code: Select all

pactl list sources

If you don't have 'pactl', install pulseaudio-utils.

Code: Select all

pactl - Send a control command to a PulseAudio server.


The fix is really to edit the file /etc/pulse/default.pa and comment-out the
"load-module module-suspend-on-idle" -> "#load-module module-suspend-on-idle"
line.
Mint 18.2 Xfce/fluxbox/pulse-less - Xubuntu 16.10/fluxbox/pulse-less
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Re: VIDEO RECORDING for Kdenlive

Postby phd21 » Fri May 19, 2017 12:13 am

Hi "Silver Surfer",

It would help to know more about your system setup. If you run "inxi -Fxzd" and "lsusb" from the console terminal prompt, highlight the results, copy and paste them back here, that should provide enough information. If you are not using Linux Mint 18.1 then upgrade to it using the Mint Update Manager.

Have you installed "ubuntu-restricted-extras", mencoder, melt (mlt), from the Software Manager or Synaptic Package Manager (SPM)? If not, I recommend doing that.

Are you using the PPA for the most recent version of the excellent Kdenlive video editor? Did you try reducing the video format size for video capture? With Kdenlive and other video editors, go into the "Synaptic Package Manager (SPM)" search for Kdenlive, right click and install all recommended and suggested packages.

For Linux Mint 18.x
To install this using the PPA method, open a console terminal, type in, or copy & paste, each line below one by one:

Code: Select all

sudo add-apt-repository ppa:kdenlive/kdenlive-stable

Code: Select all

sudo apt-get update

Code: Select all

sudo apt-get install kdenlive


Did you use the PPA for the superb Guvcview webcam Video For Linux (V4L) application?
Install "guvcview" webcam software. Lets you record video and audio from whatever video sources are available..
http://linuxdaddy.com/blog/install-guvcview-on-ubuntu/
To install this using the PPA method for any version of Linux Mint, open a console terminal, type in, or copy & paste, each line below one by one:

Code: Select all

sudo add-apt-repository ppa:pj-assis/testing

Code: Select all

sudo apt-get update

Code: Select all

sudo apt-get install guvcview


When you say cannot record sound, what do you mean, from a microphone or whatever is playing on your desktop or both?

FYI: In addition to installing "pulse audio volume control" (pavucontrol) from the Software Manager or Synaptic Package Manager (SPM), there are some really nice graphical (GUI) programs for sound that start with "Qas", like the fantastic "Qasmixer", in the Software Manager or Synaptic Package Manager (SPM) that you can install and use. Sound "Mixers" can be a little confusing if you are not familiar with them. If you bring up "Qasmixer" and make it fullscreen, on the right side you will have mixer devices where you can control your system sound. If you do not see the mixer devices, hit "F6". The mixer item "sysdefault" will show all installed sound card devices, and you will have various options to adjust various volume controls using "sliders" which you can turn off and on using the "dot" below the volume slider. There are also various other check boxes below that you can use for microphones and such, see microphone button on bottom right, and depending upon your sound card(s) that sometimes includes headphone checkboxes and or sliders as well, like "Headphone Jack Sense".

The applications included are:
- qasconfig - browser for the alsa configuration tree
- qashctl - mixer for alsa's high level control interface
- qasmixer - desktop mixer with features similar to alsamixer

Qasmixer is a desktop mixer application for alsa's "simple mixer interface" and offers features similar to alsamixer. it also features a sytem tray icon with basic mixer functionality.

If you provide a full size screenshot of "qasmixer" on the "sysdefault" mixer option, that might help too.


Hope this helps ...
Phd21: Mint KDE 17.3 & 18.1, 64-bit Awesome OS, Ancient Dell OptiPlex 780 Core2Duo E8400 3GHz,3gb Ram,160gb hdd, Video: Intel 4 Graphics, DVD Lightscribe. Why I use KDE?:https://opensource.com/life/15/4/9-reasons-to-use-kde

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Re: VIDEO RECORDING for Kdenlive

Postby Silver Surfer » Fri May 19, 2017 10:10 am

Hi phd21,
We have communicated before and your info on kdenlive was very much appreciated.
Herewith below response to “inxi -Fxzd”

System: Host: anthony-Aspire-5920G Kernel: 4.4.0-72-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: Cinnamon 3.0.7 (Gtk 3.18.9-1ubuntu3.2)
Distro: Linux Mint 18 Sarah
Machine: System: ASUSTeK (portable) product: X550CA v: 1.0
Mobo: ASUSTeK model: X550CA v: 1.0
Bios: American Megatrends v: X550CA.300 date: 03/24/2014
CPU: Dual core Intel Core i7-3537U (-HT-MCP-) cache: 4096 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 9977
clock speeds: max: 3100 MHz 1: 826 MHz 2: 801 MHz 3: 804 MHz
4: 809 MHz
Graphics: Card: Intel 3rd Gen Core processor Graphics Controller
bus-ID: 00:02.0
Display Server: X.Org 1.18.3 drivers: intel (unloaded: fbdev,vesa)
Resolution: 1366x768@60.05hz
GLX Renderer: Mesa DRI Intel Ivybridge Mobile
GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes
Audio: Card Intel 7 Series/C210 Series Family High Definition Audio Controller
driver: snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture v: k4.4.0-72-generic
Network: Card-1: Qualcomm Atheros AR9485 Wireless Network Adapter
driver: ath9k bus-ID: 02:00.0
IF: wlp2s0 state: up mac: <filter>
Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
driver: r8169 v: 2.3LK-NAPI port: e000 bus-ID: 03:00.2
IF: enp3s0f2 state: down mac: <filter>
Card-3: Atmel usb-ID: 001-005
IF: null-if-id state: N/A speed: N/A duplex: N/A mac: N/A
Drives: HDD Total Size: 1500.3GB (1.4% used)
ID-1: USB /dev/sda model: 545050A7E680 size: 500.1GB
ID-2: /dev/sdb model: ST1000LM024_HN size: 1000.2GB
ID-3: /dev/mmcblk0 model: N/A size: 31.9GB
Optical: /dev/sr0 model: MATSHITA DVD-RAM UJ8E2 S
rev: 1.00 dev-links: cdrom,cdrw,dvd,dvdrw
Features: speed: 24x multisession: yes
audio: yes dvd: yes rw: cd-r,cd-rw,dvd-r,dvd-ram state: running
Partition: ID-1: / size: 456G used: 18G (5%) fs: ext4 dev: /dev/dm-1
ID-2: /boot size: 472M used: 113M (26%) fs: ext2 dev: /dev/sda1
ID-3: swap-1 size: 2.15GB used: 0.00GB (0%) fs: swap dev: /dev/dm-3
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 44.0C mobo: N/A
Fan Speeds (in rpm): cpu: 2100
Info: Processes: 211 Uptime: 13 min Memory: 850.4/7869.6MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.421) inxi: 2.2.35
Response to: “lsusb”
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 04f2:b3f2 Chicony Electronics Co., Ltd
Bus 001 Device 005: ID 03eb:8a0b Atmel Corp.
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 174c:1153 ASMedia Technology Inc. ASM2115 SATA 6Gb/s bridge
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Don’t forget I’m geriatric and after using Microsoft Windows for donkey’s years, this is all gobbledygook to me. I am willing to follow instructions though, even if I don’t know what I’m doing.
I have followed your instructions, and ran all the codes. Herewith below screenshot of qasmixer:-
[rimg]/home/anthony/Pictures/Screenshot.png[/rimg]


Should be a picture here but hasn't appeared. Don't know why







Presumably somewhere there is a tutorial on how to use these new programs.
As regards no recorded sound, my Asus laptop has built in webcam and microphone in lid
The webcam is working for picture but no sound is being recorded from the lid microphone.

Thx phd21
Silver Surfer
Last edited by Silver Surfer on Sat May 20, 2017 6:42 am, edited 1 time in total.
Linuxmint KDE 18.1 Serena on Acer 5920G 64bit Laptop: Intel core 2 T7300, 2GHz, 2Gb DDR2, 500Gb HDD. Newbie to Linux.

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Re: VIDEO RECORDING for Kdenlive

Postby Silver Surfer » Fri May 19, 2017 10:31 am

Hi Flemur,
Thanks for your offer of help, but using the Terminal Command line dialogue program is beyond my age capabilities.
However, I have followed phd21's instructions to upgrade and download a few things.
I will see if any of those help! I'll keep you updated.

Thanks again

Silver Surfer
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Re: VIDEO RECORDING for Kdenlive

Postby phd21 » Sat May 20, 2017 10:53 am

Hi "Silver Surfer",

You are welcome...

Your screen shot has to be uploaded from your computer to this forum through the attachments option below where you post or reply which requires most images to be resized (scaled) to fit the very small image size allowed by this forum, or to upload the image as is to an image hosting service like "postimage.org", get a "shared link" to where the image is, and post that back here using the remote image button (rimg) in the toolbar when posting or replying.

Uploading a screenshot, image, or images to this forum
https://forums.linuxmint.com/viewtopic.php?f=42&t=232332&hilit=screenshot

Still would like to see that qasmixer screen shot please.
Phd21: Mint KDE 17.3 & 18.1, 64-bit Awesome OS, Ancient Dell OptiPlex 780 Core2Duo E8400 3GHz,3gb Ram,160gb hdd, Video: Intel 4 Graphics, DVD Lightscribe. Why I use KDE?:https://opensource.com/life/15/4/9-reasons-to-use-kde

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Re: VIDEO RECORDING for Kdenlive

Postby Silver Surfer » Sun May 21, 2017 6:45 am

Hi phd21,
We have communicated before and your info on kdenlive was very much appreciated.
Herewith below response to “inxi -Fxzd”

System: Host: anthony-Aspire-5920G Kernel: 4.4.0-72-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: Cinnamon 3.0.7 (Gtk 3.18.9-1ubuntu3.2)
Distro: Linux Mint 18 Sarah
Machine: System: ASUSTeK (portable) product: X550CA v: 1.0
Mobo: ASUSTeK model: X550CA v: 1.0
Bios: American Megatrends v: X550CA.300 date: 03/24/2014
CPU: Dual core Intel Core i7-3537U (-HT-MCP-) cache: 4096 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 9977
clock speeds: max: 3100 MHz 1: 826 MHz 2: 801 MHz 3: 804 MHz
4: 809 MHz
Graphics: Card: Intel 3rd Gen Core processor Graphics Controller
bus-ID: 00:02.0
Display Server: X.Org 1.18.3 drivers: intel (unloaded: fbdev,vesa)
Resolution: 1366x768@60.05hz
GLX Renderer: Mesa DRI Intel Ivybridge Mobile
GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes
Audio: Card Intel 7 Series/C210 Series Family High Definition Audio Controller
driver: snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture v: k4.4.0-72-generic
Network: Card-1: Qualcomm Atheros AR9485 Wireless Network Adapter
driver: ath9k bus-ID: 02:00.0
IF: wlp2s0 state: up mac: <filter>
Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
driver: r8169 v: 2.3LK-NAPI port: e000 bus-ID: 03:00.2
IF: enp3s0f2 state: down mac: <filter>
Card-3: Atmel usb-ID: 001-005
IF: null-if-id state: N/A speed: N/A duplex: N/A mac: N/A
Drives: HDD Total Size: 1500.3GB (1.4% used)
ID-1: USB /dev/sda model: 545050A7E680 size: 500.1GB
ID-2: /dev/sdb model: ST1000LM024_HN size: 1000.2GB
ID-3: /dev/mmcblk0 model: N/A size: 31.9GB
Optical: /dev/sr0 model: MATSHITA DVD-RAM UJ8E2 S
rev: 1.00 dev-links: cdrom,cdrw,dvd,dvdrw
Features: speed: 24x multisession: yes
audio: yes dvd: yes rw: cd-r,cd-rw,dvd-r,dvd-ram state: running
Partition: ID-1: / size: 456G used: 18G (5%) fs: ext4 dev: /dev/dm-1
ID-2: /boot size: 472M used: 113M (26%) fs: ext2 dev: /dev/sda1
ID-3: swap-1 size: 2.15GB used: 0.00GB (0%) fs: swap dev: /dev/dm-3
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 44.0C mobo: N/A
Fan Speeds (in rpm): cpu: 2100
Info: Processes: 211 Uptime: 13 min Memory: 850.4/7869.6MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.421) inxi: 2.2.35
Response to: “lsusb”
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 04f2:b3f2 Chicony Electronics Co., Ltd
Bus 001 Device 005: ID 03eb:8a0b Atmel Corp.
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 174c:1153 ASMedia Technology Inc. ASM2115 SATA 6Gb/s bridge
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Don’t forget I’m geriatric and after using Microsoft Windows for donkey’s years, this is all gobbledygook to me. I am willing to follow instructions though, even if I don’t know what I’m doing.
I have followed your instructions, and ran all the codes. Herewith below screenshot of qasmixer:-

Screenshot.png
Screenshot.png (8 KiB) Viewed 747 times

Presumably somewhere there is a tutorial on how to use these new programs.
As regards no recorded sound, my Asus laptop has built in webcam and microphone in lid
The webcam is working for picture but no sound is being recorded from the lid microphone.

Hope I've got it right this time. Thx for your patience
Thx phd21
Silver Surfer
Linuxmint KDE 18.1 Serena on Acer 5920G 64bit Laptop: Intel core 2 T7300, 2GHz, 2Gb DDR2, 500Gb HDD. Newbie to Linux.

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Re: VIDEO RECORDING for Kdenlive

Postby Flemur » Sun May 21, 2017 11:05 am

Silver Surfer wrote:Herewith below screenshot of qasmixer:-

Do
qasmixer -> View -> "show device selection".
You should see some info in the upper-right of the qasmixer gui.
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Please edit your original post title to include [SOLVED] if/when it is solved!
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Re: VIDEO RECORDING for Kdenlive

Postby phd21 » Sun May 21, 2017 12:25 pm

Hi "Silver Surfer",

You are welcome.

Nicely done getting the screenshot into the forum. But, I would like to see the full screen shot of Qasmixer on the "sysdefault" mixer, see my screenshot below. You have to hit F6 to see the mixers (devices) in the upper right, or click View in the toolbar and check Show Device selection, and then click "sysdefault" mixer device. Note that I have all the Microphone (input and capture) options enabled, and any related volume sliders at least half way.

Also, your image size is too small and cannot be enlarged. The allowable image size in this forum is around 100kb, roughly an image size resolution ratio of around 1280x720 (70-80% of original or less). It takes a little practice to see what settings your system will use to create a screen shot of this size, and that depends upon the number of colors and complexity of the screenshot, so it can vary from screenshot to screenshot. If you create a free account on "postimage.org" (or another image hosting site), you would not have to resize (scale) images, you can just upload the image to that, and get the link to the screenshot image which you can paste back here.

I would highly recommend that you upgrade your Linux Mint version 18 to version 18.1 through the Mint Update Manager and restart your computer of course.

There used to be a problem in Cinnamon version 18 with microphones that has a solution in the link below.
https://forums.linuxmint.com/viewtopic.php?f=48&t=233131&hilit=cinnamon+mic



Hope this helps ...

Click image to see a larger version, or right click and open in New Tab, then you can click to enlarge or decrease image size.

QasMixer1sm.jpg
My "QasMixer" on "sysdefault" mixer device.
Last edited by phd21 on Sun May 21, 2017 7:49 pm, edited 1 time in total.
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Re: VIDEO RECORDING for Kdenlive

Postby phd21 » Sun May 21, 2017 6:54 pm

Hi "Silver Surfer",

I updated my last replies, and updated the link on how to upload screenshots and images to include a video tutorial.

Video tutorial on uploading screenshots to this forum, click link below
https://youtu.be/uAiWZBa0Q7s

Hope this helps ...
Phd21: Mint KDE 17.3 & 18.1, 64-bit Awesome OS, Ancient Dell OptiPlex 780 Core2Duo E8400 3GHz,3gb Ram,160gb hdd, Video: Intel 4 Graphics, DVD Lightscribe. Why I use KDE?:https://opensource.com/life/15/4/9-reasons-to-use-kde

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Re: VIDEO RECORDING for Kdenlive

Postby Silver Surfer » Mon May 22, 2017 4:37 am

Hi phd21,
I have automatic update selected, and it appears to be linuxmint 18 Sarah currently installed. If there is a later version, how do I find the version “number” already installed
Have watched your Youtube tutorial on posting screenshots (very helpful).
Having used Converseen, I am surprised it doesn’t indicate file size changes, as you alter the percentages, rather than guesswork, of having to do it several times to get the right size.
Have posted the screenshot that I think you want below, but it doesn’t show the bottom lines of info as in yours:-
Screenshot from 2017-05-22 08-44-23.png


Hope we are getting there
Silver Surfer
Linuxmint KDE 18.1 Serena on Acer 5920G 64bit Laptop: Intel core 2 T7300, 2GHz, 2Gb DDR2, 500Gb HDD. Newbie to Linux.

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Re: VIDEO RECORDING for Kdenlive

Postby phd21 » Mon May 22, 2017 9:43 am

Hi "Silver Surfer",

You are getting much better at the screenshots. But, you still have not given me the full size screenshot of Qasmixer on the mixer device "sysdefault" setting, see screenshot below. FYI: I forgot to mention in the screenshot video tutorial that this forum also has a limit of 3 images that can be directly uploaded per post or reply, whereas using an image hosting service, you can add as many images as you want to your posts and replies.

Regarding "Converseen", adding the converted image sizes would be a really nice feature. I will contact the developers to see if they could add that... You and anyone else could contact them as well, if you want, or add yourself to my request ...
https://github.com/Faster3ck/Converseen/issues

"Qasmixer" will show different options depending upon the sound hardware that your computer has. Some people have more than one sound device as well, which would show up underneath the mixer devices on the right side, and when clicked could show even more options.

If you look at your screenshot of qasmixer which I edited, you can see that it does recognize that you have a microphone, and it is enabled on the bottom right. But, the Mic volume slider is not enabled and the volume slider is at the bottom (low to no volume), click the "dot" to enable it, and the slider should be at least half way up along with the mic boost and capture options too. You can use "Guvcview" to test if Microphone is now working, click to record a video (Capture video button), and you should see volume meters, talk in to the mic, and after a little bit click the video button to stop recording and save the video, browse to the video and see if it recorded your voice ...

And as I mentioned before, because you are using Linux Mint Cinnamon version 18, you might also have the microphone problem described in that link I provided, which does have a fairly easy solution. If after changing the Qasmixer options, and updating to Linux Mint v18.1, your microphone still does not work, then please follow the instructions in the link regarding this. If you have a problem following the instructions, ask for clarification here.

As for upgrading to a newer version of Linux Mint, that is not done automatically, nor should it be. You would have to click the Mint Update Manager, then Edit in the toolbar to see if a version update is available, and if version 18.1 is available, update to it and reboot.

Hope this helps ...

Qasmixer_forum1.jpg
Qasmixer for SilverSurfer


Guvcview_Recording_Mic1sm.jpg
"Guvcview" webcam and Video For Linux (V4L) capture and record application
- captures video and audio
Phd21: Mint KDE 17.3 & 18.1, 64-bit Awesome OS, Ancient Dell OptiPlex 780 Core2Duo E8400 3GHz,3gb Ram,160gb hdd, Video: Intel 4 Graphics, DVD Lightscribe. Why I use KDE?:https://opensource.com/life/15/4/9-reasons-to-use-kde

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Re: VIDEO RECORDING for Kdenlive

Postby Silver Surfer » Tue May 23, 2017 12:09 pm

Hi phd21,

Here is latest screenshot
Screenshot current.png

1. I have now updated Linuxmint to 18.1
2. I have opened guvcview and tried to record a self test clip. Volume meters show sound being generated, and the clip saved, but when selected, video plays but sound has poor background noise!! May be better recorded using headset mic but don’t know how to select that one whilst blocking lid mic.
Do find it frustrating that recorded material format .mkv can only be played back with VLC.
Kdenlive still crashes and closes when pressing record button

Silver Surfer
Linuxmint KDE 18.1 Serena on Acer 5920G 64bit Laptop: Intel core 2 T7300, 2GHz, 2Gb DDR2, 500Gb HDD. Newbie to Linux.

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phd21
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Re: VIDEO RECORDING for Kdenlive

Postby phd21 » Wed May 24, 2017 12:20 pm

Hi "Silver Surfer",

That's weird that I did not get notified of your reply.

In Qasmixer disable "loopback mixing" and retry... Are you saying that you also have a headset with a microphone in addition to the built-in webcam and its microphone? Have both been connected all the time? I use my headset and its mic instead of the webcam mic when I create my training videos, but both would work.

Background noise can come from many sources, you can try reducing the Mic Boost options in Qasmixer too. Some microphones have excellent "pick up" and do not require "mic boosting", others do not and thus require this option.

With "Kdenlive", go into its Configure options for Capture, select FFmpeg tab (for Video for Linux device like a webcam, and reduce the video size. And, if you are recording sound, then select that and since most microphones are not stereo select "channels =1" (unless you have a stereo mic). I also had to restart Kdenlive after first run and after making changes to these settings. I had to try the various sound devices (Default, PulseAudio, sound device) to see which worked without a lot of weird noises (see screenshots). Personally for capturing live video from a webcam or from another Video For Linux devices, I found that using Guvcview or another application works better for this than Kdenlive. Of course you can use the excellent Kdenlive video editor to edit the videos afterwards.

Update: I am using Linux Mint KDE 17.3 at the moment, and Kdenlive records webcam video just fine, but when I try to use the record audio option, then it will not record.

As for playing back ".mkv" video files which are the default for the wonderful "Guvcview" applicaion and others, VLC should work great. But, there are also other multi-media applications you can use, including one of my favorites called "SMplayer":

SMPlayer Sees New Release With MPV Support, Install via PPA

You can use the excellent "SMplayer" to view videos, Blu-ray & DVD discs
Unlike other players SMplayer doesn't require you to install codecs to play something because it carries its own, all required codecs within itself. This release which now supports MPV and some other features such as MPRIS v2 Support, new theme, 3D stereo filter and more. I recommend reading both web links below.

Noobslab - another excellent Linux website - This article on SMplayer and MPV 2017
http://www.noobslab.com/2017/01/install-latest-smplayer-release-1710.html

Web Upd8 - excellent Linux website - This article is for SMplayer & MPV
http://www.webupd8.org/2015/09/smplayer-159-stable-released-with-mpv.html

To install these using the PPA method, open a console terminal, type in, or copy & paste, each line below one by one:

Code: Select all

sudo add-apt-repository ppa:rvm/smplayer

Code: Select all

sudo add-apt-repository ppa:mc3man/mpv-tests

Code: Select all

sudo apt-get update

Code: Select all

sudo apt-get install mpv smplayer smtube  youtube-dl


or for added smplayer themes and skins

Code: Select all

sudo apt-get install mpv smplayer smtube smplayer-themes smplayer-skins youtube-dl





Hope this helps ...
Phd21: Mint KDE 17.3 & 18.1, 64-bit Awesome OS, Ancient Dell OptiPlex 780 Core2Duo E8400 3GHz,3gb Ram,160gb hdd, Video: Intel 4 Graphics, DVD Lightscribe. Why I use KDE?:https://opensource.com/life/15/4/9-reasons-to-use-kde

Silver Surfer
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Re: VIDEO RECORDING for Kdenlive

Postby Silver Surfer » Fri May 26, 2017 4:35 am

OK phd21,
I seem to be getting somewhere at last!
Disabling loopback mixing made a difference. Using Audacity, I have recorded my voice, supposedly via the headset built in mic (there doesn’t seem to be any indication in qasmixer as to whether the lid mic, or headphone mic is being used to pick up voice. When connecting headset I notice speakers disconnect, but there is only one mic indicated at any time, would it have switched mics as well? Will try and do some experimental recording to determine where it is actually recording from)
Recording does need noise reduction treatment , to eliminate a lot of white noise though. But I have never been happy with my laptop sound system.
Have followed your instructions ref SMplayer and it is installed. Looks interesting, will play with it later.

A couple of questions for you though:-

1. Not sure of the functional purpose of Qasmixer. Is it a program that once set up on your own personal system, is then able to control various other projects requiring sound in the background, or do you have to load it and set it up each time, to use it’s functions depending on requirements.

2.Likwise, Pulse Audio, Pulse audio volume control, are they used as in 1.
Linuxmint KDE 18.1 Serena on Acer 5920G 64bit Laptop: Intel core 2 T7300, 2GHz, 2Gb DDR2, 500Gb HDD. Newbie to Linux.

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phd21
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Re: VIDEO RECORDING for Kdenlive

Postby phd21 » Fri May 26, 2017 11:43 am

Hi "Silver Surfer",

Silver Surfer wrote:OK phd21, I seem to be getting somewhere at last! Disabling loopback mixing made a difference.


That's great!

Were you able to use "guvcview" as well to record audio now?

And you did not have to edit the sound file regarding the mic bug in Cinnamon 18 either?

Silver Surfer wrote:Using Audacity, I have recorded my voice, supposedly via the headset built in mic (there doesn’t seem to be any indication in qasmixer as to whether the lid mic, or headphone mic is being used to pick up voice. When connecting headset I notice speakers disconnect, but there is only one mic indicated at any time, would it have switched mics as well? Will try and do some experimental recording to determine where it is actually recording from). Recording does need noise reduction treatment , to eliminate a lot of white noise though. But I have never been happy with my laptop sound system.


Some computers, especially laptops, will automatically switch to headsets when they are connected. I do not know if that also disables onboard speakers and mic, apparently in your case it does with the speakers, maybe the mic too (your computer's manual might explain this). I highly recommend experimenting with various settings.

Silver Surfer wrote:Have followed your instructions ref SMplayer and it is installed. Looks interesting, will play with it later.


SMplayer is an excellent multimedia player as is VLC. I have personally found that sometimes it will play certain video file types, or certain video streams, better than VLC does. You also get a new version of MPV which is nice to have and there are browser addons for "MPV" so that you can right click an online video (YouTube, etc...) and open with MPV, or VLC, which can perform better than playing through your browser. FYI: VLC does have a "development" version 3 that is available using a PPA.

Silver Surfer wrote:A couple of questions for you though:-

1. Not sure of the functional purpose of Qasmixer. Is it a program that once set up on your own personal system, is then able to control various other projects requiring sound in the background, or do you have to load it and set it up each time, to use it’s functions depending on requirements.


It directly access your sound devices, so any application that uses your sound devices are affected by these settings. In my Linux Mint 17.3 KDE system it seems to remember these between reboots, does not seem to remember the setting in my Linux Mint 18.1 KDE though (but it is not a problem to bring up qasmixer and set my settings)? Linux Mint 18.1 has major improvements in the default sound control options in the menus and through the volume icon.

Before recording anything, I always start Qasmixer. Different applications seem to require some minor setting changes, like lowering or increasing the volume slider(s) or using mic boost or not. Most will work fine though. Whenever I create a video tutorial, I will bring up "SimpleScreenRecorder (SSR)", or guvcview, and create a short video to test that my volume is high enough or not too high before creating that actual video. Some applications do have their own volume controls for speakers and mics as well.

Remember that if the volume (including mic boost) is too high, you could get "feeback" noise. Sometimes having "Line In" enabled or its volume controls too high, can also create background noise. I have noticed on some computers it will not allow inputs of Line In and Mic at the same time.

"QasTools" - Click Applications, Qasmixer...
http://xwmw.org/qastools/applications/qasmixer.html

Silver Surfer wrote:2.Likwise, Pulse Audio, Pulse audio volume control, are they used as in 1.


PulseAudio Volume Control (pavucontrol) is a simple GTK based volume control tool ("mixer") for the PulseAudio sound server. In contrast to classic mixer tools this one allows you to control both the volume of hardware devices and of each playback stream separately.


If you bring up an application, like Audacity, Guvcview, or a music application, then go into PAVC, you can make volume adjustments per application.

PulseAudio information
https://wiki.archlinux.org/index.php/PulseAudio


I always install both of these and use them both... I use Qasmixer more...

Hope this helps ...
Phd21: Mint KDE 17.3 & 18.1, 64-bit Awesome OS, Ancient Dell OptiPlex 780 Core2Duo E8400 3GHz,3gb Ram,160gb hdd, Video: Intel 4 Graphics, DVD Lightscribe. Why I use KDE?:https://opensource.com/life/15/4/9-reasons-to-use-kde

Silver Surfer
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Re: VIDEO RECORDING for Kdenlive [SOLVED]

Postby Silver Surfer » Sat Jun 03, 2017 4:40 am

Hi phd21,
Yes can now use guvcview, but still get a lot of noise. Think this is due to laptop fault.
I have another laptop I can use linux on, so may try using that instead.
Thanks for all your help on this subject.
I will now mark subject SOLVED, but I'm sure we'll converse on something else some other time!
Thx once again

Silver Surfer
Linuxmint KDE 18.1 Serena on Acer 5920G 64bit Laptop: Intel core 2 T7300, 2GHz, 2Gb DDR2, 500Gb HDD. Newbie to Linux.

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phd21
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Re: VIDEO RECORDING for Kdenlive [SOLVED]

Postby phd21 » Sat Jun 03, 2017 9:55 am

Hi "Silver Surfer",

You are welcome.

Try lowering various volume sliders, maybe unchecking (disabling line in), etc...

Of course you can also get another webcam and try it as well...
Phd21: Mint KDE 17.3 & 18.1, 64-bit Awesome OS, Ancient Dell OptiPlex 780 Core2Duo E8400 3GHz,3gb Ram,160gb hdd, Video: Intel 4 Graphics, DVD Lightscribe. Why I use KDE?:https://opensource.com/life/15/4/9-reasons-to-use-kde


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