I am trying to follow this simple example to stream WebM VP8 video over RTP.
I am runinng Arch linux 64 bits, and I have compiled and installed the gstreamer version they talk about (i.e. the git version) and I followed these instructions.
From what I understand, building from the git repo bilds gstreamer-1.0 so this is what I have.
I have GST_PLUGIN_PATH and GST_PLUGIN_SYSTEM_PATH point to /home/nschoe/usr/lib/gstreamer-1.0 (I have installed this gstreamer-1.0 completely in my home directory).
When I tried the command gst-launch-1.0 -v videotestsrc ! vp8enc ! rtpvp8pay ! udpsink host=127.0.0.1 port=9001 I get the error :
GST_PIPELINE ./grammar.y:687:priv_gst_parse_yyparse: no element "vp8enc"
After some researches, I found that vp8enc should be in gst-plugins-good, which I have installed.
But when I run gst-inspect-1.0 -a | grep -i gst-plugins-good | grep -i vp8 I got :
rtpvp8depay: Source module gst-plugins-good
rtpvp8pay: Source module gst-plugins-good
So I don't understand why I don't have vp8enc and vp8dec. Besides, when I run locate vpx.so I have the following results (truncated to relevant results) :
/home/nschoe/usr/lib/gstreamer-1.0/libgstvpx.so
/usr/lib/libvpx.so
The former most lijkely comes from the gst-plugins-good that I have cloned from git and installed in my home directory, the latter I have installed from the Arch linux pacman, because I thought it would solve my problem.
Can you tell me why I can't use that vp8enc plugin ?
Thank you in advance for your time.
gstreamer 1.0 can also handle webm correctly, it was likely some issue with your setup. It is actually advised to stop using 0.10 as it is obsolete and unmaintained by the community.
Did gst-inspect-1.0 /path/to/your/gst/libgstvpx.so
actually list the elements for vpx?
Well, I still don't know what happened, but actually it turned out vp8 seems to be handled by gstreamer-0.10 : I removed everything and installed gstreamer-0.10 from archlinux's package manager as well as good, bad and base plugins and I could play .webm file.
Somebody might want to know that gstreamer-0.10 can handle webm correctly.
Related
I'm new to Elm. and I'm not good at English. So, if any ambiguous or wrong thing is there, please let me correct it.
----------- edit -----------
All my problem below is on WSL. when I'm trying on windows, all work fine. then... why elm install doesn't work on WSL? did you have any idea?
-------- problem --------
when I try to elm-test init, it doesn't work like below
$ elm-test init
Here is my plan:
Add:
elm/random 1.0.0
elm-explorations/test 1.2.2
Would you like me to update your elm.json accordingly? [Y/n]:
-- PROBLEM DOWNLOADING PACKAGE -------------------------------------------------
I was trying to download the source code for elm/random 1.0.0, so I tried to
fetch:
https://github.com/elm/random/zipball/1.0.0/
But my HTTP library is giving me the following error message:
ConnectionTimeout
Are you somewhere with a slow internet connection? Or no internet? Does the link
I am trying to fetch work in your browser? Maybe the site is down? Does your
internet connection have a firewall that blocks certain domains? It is usually
something like that!
but my Browser(Chrome) is working beautifully, and even in WSL (the environment that I run elm-test init command at) is too.
$ curl https://github.com/elm/random/zipball/1.0.0/
https://codeload.github.com/elm/random/legacy.zip/1.0.0<body>You are being redirected.</body></html>
then I also try again to redirect the URL
$ curl https://codeload.github.com/elm/random/legacy.zip
Warning: Binary output can mess up your terminal. Use "--output -" to tell
Warning: curl to output it to your terminal anyway, or consider "--output
Warning: <FILE>" to save to a file.
I think there's no Network Problem. My PC can connect with the repo, and I think it will be downloaded well.
I lastly tried just elm install, and that throws the same error too. it seems like Elm can't connect with the repo, even if My PC can.
$ elm install elm/random
Here is my plan:
Add:
elm/random 1.0.0
Would you like me to update your elm.json accordingly? [Y/n]:
-- PROBLEM DOWNLOADING PACKAGE -------------------------------------------------
I was trying to download the source code for elm/random 1.0.0, so I tried to
fetch:
https://github.com/elm/random/zipball/1.0.0/
But my HTTP library is giving me the following error message:
ConnectionTimeout
Are you somewhere with a slow internet connection? Or no internet? Does the link
I am trying to fetch work in your browser? Maybe the site is down? Does your
internet connection have a firewall that blocks certain domains? It is usually
something like that!
Please help me, what should I do?
I recently had reason to use WSL for elm development. It wasn't much fun and I'm glad to be back on Mac! What I found was that certain disk operations on WSL seemed to go very slowly and that could lead a variety of weird issues.
I was using Webstorm, which does not handle WSL well, so in the end I did everything on C: drive (rather than in /home/...) so that webstorm could run the windows version of elm-format, while my node development environment was run on the linux layer.
That's not a precise answer to your question but just to say that it can be done, but its not an ideal way to write Elm code in my experience
I had same issue and it was solved.
It was due to DNS server settings.
Create a file /etc/resolv.conf and write the following line.
nameserver 8.8.8.8
Then WSL will refer to Google Public DNS and works fine.
However, when restart WSL, the settings revert back.
Therefore, the following settings are also required.
Create a file /etc/wsl.conf and write the following line.
[network]
generateResolvConf = false
wsl --shutdown and restart WSL.
Reference link
https://github.com/microsoft/WSL/issues/4285#issuecomment-522201021
I've upgraded my deveolpment environment from python-3.2/ Qt-4.8/ PyQt4 to python 3.4.2 / Qt5.3 / PyQt5.
Everything is Ok but the python source code generation with pyuic5.
When calling this commands I get the error
/usr/bin/python3: No module named uic
The Qt uic program is located at
~/Qt/5.3/gcc_64/bin/uic
The PyQt5 pacjakge is located at
/usr/local/lib/python3.4/site-packages/PyQt5
Even if the PyQt5 environment is operational as runtime I can't build any new GUI interface, so I can't move forward with this application upgrade.
Any idea ?
Thanks for help.
Thanks for the answer from #Akhil. The code below really helps me avoid the "module not found" problem, and successfully create a .py file from a .ui file.
exec python -m PyQt5.uic.pyuic youruifile -o yourpyfile -x
call python -m PyQt5.uic.pyuic -x filename.ui -o filename.py
this one worked for me (28th june 2017, PyQt5, python 3.6, win10, 64bit)
I faced the same issue. I had installed PyQt into a virtual environment and the issue was the the pyuic5 script was not using the python interpreter for that virtual environment.
So I opened up the pyuic5 script
exec pythonw2.7 -m PyQt5.uic.pyuic ${1+"$#"}
to
exec python -m PyQt5.uic.pyuic ${1+"$#"}'
This resolved the issue for me.
I know this is late, but I just recently encountered this issue when setting up external tools for Qt Creator. I know its not exactly what you ran into but it produces the same error. I don't like the idea of modifying files in my anaconda/bin directory so I didn't want to implement either of the other answers.
What I did find is that when you are setting up an external tool Qt Creator operates as if you are working in a new environment (i.e. your PATH is not the same as your development path). What I found is that you need to set the Environment field to have the same path as your development environment. This occurs by default when you setup Build and Run Settings for your project, but not for external tools.
Like #ekhumoro said in his comment You must pay attention to your PATH at all times.
I believe you are a Mac user and I had faced a similar issue.
It seems you'll simply have to provide the full path of the pyuic file (for me, it was under a hidden folder usr in the home directory: /usr/local/Cellar/pyqt/5.10.1_1/bin/pyuic5).
In your terminal, change directory to where the *.ui files( which you wish to convert to a *.py file) lies.
So for instance, if you have a Qt designer file saved by the name untitled.ui on your desktop, put in the following command in your terminal:
Amars-MacBook-Pro:Desktop amaradak$ /usr/local/Cellar/pyqt/5.10.1_1/bin/pyuic5 -x untitled.ui -o untitled.py
Hope this helps...
Cheers
Try this: i've been searching for 2 days and all problem solved!
First Rule in Python: Don't use .XML this is not Java instead use .PY for me i don't need uic at all
Let's begin, my pyuic5 actually there is no in PyQt5 folder instead in Scripts Folder
C:\......Python\Python37-32\Scripts\pyuic5.exe
you have to make sure that the yourFile.ui is in the same location of your pyuic5.exe
Follow the pict below, you will be understand:
How to convert ui to py for easy way
uic not found solved
it works like a Charm !
Hi everybody , see last pict, i just converted ui to py for the first time in my life !
I run poclbm on my system but for some reason both deepbit and slush don't "see" the work being performed. My system reports about 200 megabashes per second being done. I tried mining with my cpu using the same settings, and then both deepbit and slush recognized that work was being performed.
These are the errors I am getting out of the respective mining hardware (every minute or so):
poclbm error: pit.deepbit.net:8332 22/02/2013 21:50:59, Verification failed, check hardware! (0:0:Cypress, d47b7ba0)
cgminer error: [2013-02-22 22:18:51] GPU0: invalid nonce - HW error
I am using Ubuntu 12.10 (Quantal Quetzal) with the 12.10 version poclbm with an ATI 5800 series video card. The video drivers are installed and work as far as I can tell. When I run a "aticonfig --odgc --adapter=all", the gpu does seem to be utilized with poclbm (around 70% utilization or so).
I found the solution through an irc channel (Freenode on channcel #cgminer). Basically, at least on the version of Ubuntu that I have (12.10), the 2.8 version of the SDK does NOT work properly with cgminer or poclbm. I was instructed to download the 2.4 version of the SDK. Here:
http://developer.amd.com/Downloads/AMD-APP-SDK-v2.4-lnx32.tgz
http://developer.amd.com/Downloads/AMD-APP-SDK-v2.4-lnx64.tgz
Some distributions require the "2.7" version so I'll put the links here:
http://developer.amd.com/Downloads/AMD-APP-SDK-v2.7-lnx32.tgz
http://developer.amd.com/Downloads/AMD-APP-SDK-v2.7-lnx64.tgz
I compiled it. There is no "make install" for this Makefile, apparently, so you have to manually copy the files to your lib directory:
for 32 bit: $ cp -pv lib/x86/* /usr/lib/
for 64 bit: $ cp -pv lib/x86_64/* /usr/lib/
Also copy the include files: $ rsync -avl include/CL/ /usr/include/CL/
With the libraries installed in the appropriate directories, I recompiled cgminer and then it worked. I also tried it with poclbm and it worked with that too.
Hm, I experienced the same error with pclbm and cgminer. Then I found https://bitcointalk.org/index.php?topic=139406.msg1502120#msg1502120 .. I tried phoenix and all is ok now. Hope it helps. Sry my bad english.
I'm trying to build a Webkit Kiosk on a Raspberry Pi.
I found a good start at: https://github.com/pschultz/kiosk-browser
The things I want to do:
1) Start the kiosk without logging in (with inittab?)
Peter Schultz pointed out adding the following line:
1:2345:respawn:/usr/bin/startx -e /usr/bin/browser http://10.0.0.5/zfs/monitor tty1 /dev/tty1 2>&1
But he did not explain the steps to make this work (for noobs).
What I did is add his code to a personal git repository and cloned this repo to /usr/bin/kiosk and sudo apt-get install libwebkit-dev and sudo make.
The line to add to inittab will be:
1:2345:respawn:/usr/bin/startx -e /usr/bin/kiosk/browser http://my-kiosk-domain.com tty1 /dev/tty1 2>&1
If I do this, I generate a loop or some kind...
If you want to automatically load a browser full screen in kiosk mode every time you turn on the rpi you can add one of these two lines to the file /etc/xdg/lxsession/LXDE/autostart
#chromium --kiosk --incognito www.google.it
#midori -i 120 -e Fullscreen -a www.google.it -p
The first is for chromium and the latter is for midori, the rpi default lightweight browser.
Hint : Since we will use the rpi as a kiosk we want to prevent the screen from going black and disable the screensaver. Edit the autostart file:
sudo pico /etc/xdg/lxsession/LXDE/autostart
find the following line and comment it using a # (it should be located at the bottom)
##xscreensaver -no-splash
and append the following lines
#xset s off
#xset -dpms
#xset s noblank
Save, reboot.
More info on
http://pikiosk.tumblr.com/post/38721623944/setup-raspberry-ssh-overclock-sta
The upvoted answer suggest to run LXDE for it. You could also do it without such a heaver desktop enviorment. You could just start midori or chromium in an X session:
xinit /usr/bin/midori -e Fullscreen -a http://www.examples.com/
xinit chromium --kiosk http://www.examples.com/
Sometimes Fullscreen mode of midori is not working as expected and midori is not using whole screen. In these cases you could map it inside a very simple window manager like MatchBox to get real fullscreen. Due to xinit you have to wrap everything in a shell script.
#!/bin/sh
matchbox-window-manager &
midori -e Fullscreen -a http://dev.mobilitylab.org/TransitScreen/screen/index/11
Autostart could be done simply be using /etc/rc.local.
More information concerning screensaver issues and an automated restart could be found here: https://github.com/MobilityLab/TransitScreen/wiki/Raspberry-Pi#running-without-a-desktop
Chromium has a dependency problem on some debian derivate for arm architecture. For Cubian you find the bug report here. I am not sure if you could install chromium on latest Raspbian without problem.
But I really could recommend midori. It's very fast and support for modern web technologies is very good. As Chromium it is using webkit as rendering engine. If you miss some html5 / css3 features consider an update of libwebkitgtk (for example by using package of debian testing).
It's possible you haven't set the DISPLAY environment variable.
Try:
export DISPLAY=:0
/usr/bin/startx /usr/bin/browser
Or, browser can also take a display argument (so you don't need the environment variable):
/usr/bin/startx /usr/bin/browser :0
This works for me on Raspbian from a standard terminal shell (I'm logged in over SSH).
Updated for the current version of Raspbian (with Pixel desktop) install with noop 2.0.
I found you need to edit in two different places to get it to work.
/etc/xdg/lxsession/LXDE/autostart
/home/pi/.config/lxsession/LXDE-pi/autostart
So my configure file is:
# #xscreensaver -no-splash
#xset s off
#xset -dpms
#xset s noblank
#chromium-browser --kiosk --incognito http://localhost
And that's it.
You should probably start with checking if /usr/bin/kiosk/browser is working at all. You should start normal X session (graphical environment) on your RaspberryPi, launch terminal, try running this command:
/usr/bin/kiosk/browser http://my-kiosk-domain.com
and see what it prints on the terminal. Is this working? Do you see any error messages?
I'm trying to build a Webkit Kiosk on a Raspberry Pi.
I think Instant WebKiosk for Raspberry Pi could be useful for you.
See: http://www.binaryemotions.com/raspberry-digital-signage/
I've a gumstix Overo which I am configuring to work with a e-CAM camera. The documentation provided by camera manufacture asks me to patch a 2.6.34 kernel and compile in Video For Linux support. When I look at gumstix user documentation they say I should execute:
bitbake -c menuconfig virtual/linux
However when I run this command I get
bacon:~/proj/overo-oe$ bitbake -c menuconfig virtual/linux
NOTE: Handling BitBake files: \ (7100/7100) [100 %]
NOTE: Parsing finished. 6382 cached, 413 parsed, 305 skipped, 2 masked.
ERROR: Nothing PROVIDES 'virtual/linux'
I'm not altogether sure about how I provide virtual/linux. Any ideas about how to fix this error?
This might be a case of out-of-date documentation. In any case, my current work around is to name the kernel explicitly: bitbake -c menuconfig linux-omap3-2.6.34
I can help with a step-by-step procedure to bitbake 3.0 kernel.
If that may be helpful for you. Using a WMware Ubuntu ...
I would stay away from convoluted build systems as bitbake. Every one seems to be inventing one... making the 'tool' to get more of your time then the thing you want to do with the tool. All of them are the same. Linus would quote on those guys:
Just don't do it...!