kivy-examples/demo/kivycatalog won't play...

[ToR]

Tried to run the catalog demo, it will not play cityCC0.mpg, otherwise it runs as I believe is expected.

Using Kivy 1.11.1 with Python 3.7 in a venv.

I also tried with Kivy 2.0.0, same error (but only once)

Info when running main.py:

"

(venv) BP:kivycatalog tor$ python3 main.py

...

[INFO   ] [Window      ] virtual keyboard not allowed, single mode, not docked
[INFO   ] [Video       ] Provider: null(['video_ffmpeg', 'video_ffpyplayer'] ignored)
[ERROR  ] [Image       ] Error loading texture ../../widgets/cityCC0.mpg
[INFO   ] [GL          ] NPOT texture support is available
[INFO   ] [Base        ] Start application main loop
[INFO   ] [Clipboard   ] Provider: sdl2(['clipboard_nspaste'] ignored)
[ERROR  ] [Image       ] Error loading texture ../../widgets/cityCC0.mpg
[ERROR  ] [Image       ] Error loading texture ../../widgets/cityCC0.mpg
[INFO   ] [WindowSDL   ] exiting mainloop and closing.
[INFO   ] [Base        ] Leaving application in progress...

"

While trying to fix this I  did:

pip3 install ffpyplayer

pip3 install ffmpeg

Which gave:

"

[INFO   ] [Video       ] Provider: ffmpeg
[ERROR  ] [Image       ] Error loading texture ../../widgets/cityCC0.mpg
[INFO   ] [GL          ] NPOT texture support is available
[INFO   ] [Base        ] Start application main loop
[INFO   ] [Base        ] Leaving application in progress...
 Traceback (most recent call last):
   File "main.py", line 192, in <module>
     KivyCatalogApp().run()

---- lots of output -----

   File "/Users/tor/prj/RP-kivy-tut/venv/lib/python3.7/site-packages/kivy/uix/video.py", line 189, in _do_video_load

     self._video.play()
   File "/Users/tor/prj/RP-kivy-tut/venv/lib/python3.7/site-packages/kivy/core/video/video_ffmpeg.py", line 47, in play
     self._player = ffmpeg.FFVideo(self._filename)
 AttributeError: module 'ffmpeg' has no attribute 'FFVideo'

"

Now the catalog demo won't run at all...

Not much fun with FFVideo either, a traceback ends in:

"

   File "/Users/tor/prj/RP-kivy-tut/venv/lib/python3.7/site-packages/kivy/uix/video.py", line 189, in _do_video_load
     self._video.play()
   File "/Users/tor/prj/RP-kivy-tut/venv/lib/python3.7/site-packages/kivy/core/video/video_ffmpeg.py", line 47, in play
     self._player = ffmpeg.FFVideo(self._filename)
 AttributeError: module 'ffmpeg' has no attribute 'FFVideo'

"

Now I am at at a loss of how to proceed, it is supposed to work, right ?.

Any help is much appreciated.

[Elliot Garbus]

There errors are not a problem and the demon will run.

 

ERROR  ] [Image       ] Error loading texture ../../widgets/cityCC0.mpg
[ERROR  ] [Image       ] Error loading texture ../../widgets/cityCC0.mpg

The Video widget is derived from Image, and will display images or videos.  Image will log an error when loading a video, because it is not an image… and the load the video.

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[Tommy Rausberg]

OK but I'm afraid I have not been able to make the catalog demo play the video.

Any ideas on what to do next is appreciated

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[Elliot Garbus]

It is playing video on my system.  I’d suggest creating a new venv, and install kivy[full], per the install directions. 

Sent from my iPhone

On Jul 2, 2021, at 3:11 PM, Tommy Rausberg <tommy.r...@gmail.com> wrote:



To view this discussion on the web visit https://groups.google.com/d/msgid/kivy-users/CACfASmt%3Do2ijAd2jrC2FaB%2BvuBs2U6bzQUBseGd%2BGD33G4xvsg%40mail.gmail.com.

[Tommy Rausberg]

Thanks for your help,

I did create a new venv, and did it again following the kivy.org installation web page with the same outcome; video cityCC0.mpg does not play.

In venv "pip list" gives:

"

Package       Version
------------- ---------
certifi       2021.5.30
chardet       4.0.0
docutils      0.17.1
ffpyplayer    4.3.2
idna          2.10
Kivy          2.0.0
Kivy-examples 2.0.0
Kivy-Garden   0.1.4
Pillow        8.3.0
pip           21.1.3
Pygments      2.9.0
requests      2.25.1
setuptools    40.8.0
urllib3       1.26.6

"

Python main.py output (last lines):

"

[INFO   ] [Text        ] Provider: sdl2

[INFO   ] [Video       ] Provider: null(['video_ffmpeg', 'video_ffpyplayer'] ignored)

[WARNING] [Image       ] Unable to load image </Users/tor/prj/Kivy/share/kivy-examples/widgets/cityCC0.mpg>
[ERROR  ] [Image       ] Error loading <../../widgets/cityCC0.mpg>

[INFO   ] [GL          ] NPOT texture support is available
[INFO   ] [Base        ] Start application main loop

[WARNING] [Image       ] Unable to load image </Users/tor/prj/Kivy/share/kivy-examples/widgets/cityCC0.mpg>
[ERROR  ] [Image       ] Error loading <../../widgets/cityCC0.mpg>

"

and the video cityCC0.mpg does not play although the png is rendered ok.

I am on mac os 10.13.6 and python 3.7.3.

Clearly there are things here I do not understand, stupid error on my part most likely...

Any ideas are welcome.

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[Elliot Garbus]

I’ll try it on my Mac, but I see you do not have a video player installed

 

[INFO   ] [Video       ] Provider: null(['video_ffmpeg', 'video_ffpyplayer'] ignored)

Did you install kivy[full] or kivy[base]?

To view this discussion on the web visit https://groups.google.com/d/msgid/kivy-users/CACfASmtRcN2btV-b0pj%2BFcdcp3z%3DdRorsiJATqRQwf0%3Dr-enwg%40mail.gmail.com.

 

[Tommy Rausberg]

Installed kivy[full] per the instructions on kivy.org, at least I honestly belive so.

The full story:

python3 -m venv Kivy
cd Kivy
source bin/activate
pip install --upgrade pip
pip3 install kivy[full]
pip3 install kivy_examples
cd share/kivy-examples/demo/kivycatalog/
python main.py

[INFO   ] [Video       ] Provider: null(['video_ffmpeg', 'video_ffpyplayer'] ignored)

That message led me onto a dark path with ffmpeg and FFVideo as previously described.

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[Tommy Rausberg]

Running the catalog demo on Ubuntu 20.04 via VMware Fusion just works.

Guess the Kivy/ffpyplayer combo is broken on mac os x 10.13.6 or something is misconfigured on my machine.

[Elliot Garbus]

You should log an issue on the kivy GitHub. 

Sent from my iPhone

On Jul 4, 2021, at 6:48 AM, Tommy Rausberg <tommy.r...@gmail.com> wrote:



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[Tommy Rausberg]

Done.

Thank you for your help!

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[Mason Liu]

Kivy here is trying to use video source as preview image and the video can't be used as a image. The solution is to set the videos's preview in python or kv first to a valid image file, and then set the source of the video to a video file. It is important that preview is set before the source is set.