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  • QuTip Example 'bloch-sphere-animation' - video renders blank

    15 juillet 2018, par damien murphy.

    On MacOSX Using Python3 running the following example code provided without modification : https://github.com/qutip/qutip-notebooks/blob/master/examples/bloch-sphere-animation.ipynb

    I get a blank video and no errors.

    I have installed libav and ffmpeg so I am not sure what else is missing with any error.

    What codec did you install on mac when running these samples ?

    Looking at the source of qutip I can see what it is using to render the video : https://github.com/qutip/qutip/blob/master/qutip/ipynbtools.py#L392

    anim.save(name + '.mp4', fps=10, writer="avconv", codec="libx264")

    I have avconv on the command line working without errors

    This is the debug outout of matploylib.animation

    INFO:matplotlib.animation:Animation.save using DEBUG:matplotlib.animation:frame
    size in pixels is 576 x 576 INFO:matplotlib.animation:MovieWriter.run :
    running command : [’avconv’, ’-f’, ’rawvideo’, ’-vcodec’, ’rawvideo’,
    ’-s’, ’576x576’, ’-pix_fmt’, ’rgba’, ’-r’, ’10’, ’-i’, ’pipe :’,
    ’-vcodec’, ’libx264’, ’-y’, ’movie.mp4’]
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
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    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter.grab_frame : Grabbing frame.
    DEBUG:matplotlib.animation:MovieWriter — Command stdout : b’’
    DEBUG:matplotlib.animation:MovieWriter — Command stderr : b"avconv
    version 12.3, Copyright (c) 2000-2018 the Libav developers\n built on
    Feb 13 2018 11:17:07 with Apple LLVM version 9.0.0
    (clang-900.0.39.2)\n[rawvideo @ 0x7f963c000000] Estimating duration
    from bitrate, this may be inaccurate\nInput #0, rawvideo, from
    ’pipe :’ :\n Duration : N/A, start : 0.000000, bitrate : N/A\n Stream

    0:0 : Video : rawvideo\n rgba, 576x576\n 10 fps, 10 tbn\nStream mapping :\n Stream #0:0 -> #0:0 (rawvideo (native) -> h264

    (libx264))\nPress ctrl-c to stop encoding\n[libx264 @ 0x7f963e001800]
    using cpu capabilities : MMX2 SSE2Fast SSSE3 SSE4.2 AVX\n[libx264 @
    0x7f963e001800] profile High, level 2.2\n[libx264 @ 0x7f963e001800]
    264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft
    2003-2017 - http://www.videolan.org/x264.html - options : cabac=1 ref=3
    deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
    mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
    deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12
    lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0
    bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
    b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250
    keyint_min=10 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf
    mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40
    aq=1:1.00\nOutput #0, mp4, to ’movie.mp4’ :\n Metadata :\n encoder
     : Lavf57.7.2\n Stream #0:0 : Video : h264 [[33][0][0][0] / 0x0021]\n
    yuv420p, 576x576, q=2-31\n 10 fps, 10 tbn\n Metadata :\n
    encoder : Lavc57.25.0 libx264\n Side data :\n cpb :
    bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay : -1\nframe= 6
    fps= 0 q=0.0 size= 0kB time=10000000000.00 bitrate=
    0.0kbits/s \rframe= 10 fps= 8 q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbits/s \rframe= 13 fps= 7
    q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbits/s
    \rframe= 16 fps= 7 q=0.0 size= 0kB time=10000000000.00
    bitrate= 0.0kbits/s \rframe= 19 fps= 6 q=0.0 size= 0kB
    time=10000000000.00 bitrate= 0.0kbits/s \rframe= 22 fps= 6
    q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbits/s
    \rframe= 26 fps= 6 q=0.0 size= 0kB time=10000000000.00
    bitrate= 0.0kbits/s \rframe= 30 fps= 6 q=0.0 size= 0kB
    time=10000000000.00 bitrate= 0.0kbits/s \rframe= 33 fps= 6
    q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbits/s
    \rframe= 36 fps= 6 q=0.0 size= 0kB time=10000000000.00
    bitrate= 0.0kbits/s \rframe= 39 fps= 6 q=0.0 size= 0kB
    time=10000000000.00 bitrate= 0.0kbits/s \rframe= 42 fps= 6
    q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbits/s
    \rframe= 45 fps= 6 q=0.0 size= 0kB time=10000000000.00
    bitrate= 0.0kbits/s \rframe= 48 fps= 6 q=0.0 size= 0kB
    time=10000000000.00 bitrate= 0.0kbits/s \rframe= 51 fps= 6
    q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbits/s
    \rframe= 55 fps= 6 q=0.0 size= 0kB time=10000000000.00
    bitrate= 0.0kbits/s \rframe= 59 fps= 6 q=25.0 size= 1kB
    time=10000000000.00 bitrate= 0.0kbits/s \rframe= 63 fps= 6
    q=25.0 size= 1kB time=0.40 bitrate= 19.8kbits/s \rframe=
    67 fps= 6 q=25.0 size= 1kB time=0.80 bitrate= 10.9kbits/s
    \rframe= 71 fps= 6 q=25.0 size= 1kB time=1.20 bitrate=
    7.9kbits/s \rframe= 75 fps= 6 q=25.0 size= 1kB time=1.60 bitrate= 6.4kbits/s \rframe= 79 fps= 6 q=25.0 size= 1kB
    time=2.00 bitrate= 5.5kbits/s \rframe= 82 fps= 6 q=25.0 size=
    1kB time=2.30 bitrate= 5.0kbits/s \rframe= 86 fps= 6 q=25.0
    size= 2kB time=2.70 bitrate= 4.6kbits/s \rframe= 90 fps=
    6 q=25.0 size= 2kB time=3.10 bitrate= 4.2kbits/s \rframe=
    93 fps= 6 q=25.0 size= 2kB time=3.40 bitrate= 4.0kbits/s
    \rframe= 97 fps= 6 q=25.0 size= 2kB time=3.80 bitrate=
    3.8kbits/s \rframe= 101 fps= 6 q=25.0 size= 2kB time=4.20 bitrate= 3.6kbits/s \rframe= 105 fps= 6 q=25.0 size= 2kB
    time=4.60 bitrate= 3.4kbits/s \rframe= 109 fps= 6 q=25.0 size=
    2kB time=5.00 bitrate= 3.3kbits/s \rframe= 112 fps= 6 q=25.0
    size= 2kB time=5.30 bitrate= 3.2kbits/s \rframe= 116 fps=
    6 q=25.0 size= 2kB time=5.70 bitrate= 3.2kbits/s \rframe=
    120 fps= 6 q=25.0 size= 2kB time=6.10 bitrate= 3.1kbits/s
    \rframe= 123 fps= 6 q=25.0 size= 2kB time=6.40 bitrate=
    3.0kbits/s \rframe= 126 fps= 6 q=25.0 size= 2kB time=6.70 bitrate= 3.0kbits/s \rframe= 129 fps= 6 q=25.0 size= 2kB
    time=7.00 bitrate= 2.9kbits/s \rframe= 132 fps= 6 q=25.0 size=
    3kB time=7.30 bitrate= 2.9kbits/s \rframe= 135 fps= 6 q=25.0
    size= 3kB time=7.60 bitrate= 2.8kbits/s \rframe= 138 fps=
    6 q=25.0 size= 3kB time=7.90 bitrate= 2.8kbits/s \rframe=
    141 fps= 6 q=25.0 size= 3kB time=8.20 bitrate= 2.8kbits/s
    \rframe= 144 fps= 6 q=25.0 size= 3kB time=8.50 bitrate=
    2.7kbits/s \rframe= 148 fps= 6 q=25.0 size= 3kB time=8.90 bitrate= 2.7kbits/s \rframe= 150 fps= 6 q=-1.0 Lsize= 7kB
    time=14.70 bitrate= 4.1kbits/s \r\nvideo:4kB audio:0kB other
    streams:0kB global headers:0kB muxing overhead : 74.948143%\n[libx264 @
    0x7f963e001800] frame I:1 Avg QP : 6.00 size : 112\n[libx264 @
    0x7f963e001800] frame P:38 Avg QP : 6.21 size : 30\n[libx264 @
    0x7f963e001800] frame B:111 Avg QP : 9.67 size : 22\n[libx264 @
    0x7f963e001800] consecutive B-frames : 1.3% 0.0% 0.0%
    98.7%\n[libx264 @ 0x7f963e001800] mb I I16..4 : 100.0% 0.0% 0.0%\n[libx264 @ 0x7f963e001800] mb P I16..4 : 0.0% 0.0% 0.0% P16..4 : 0.0% 0.0% 0.0% 0.0% 0.0% skip:100.0%\n[libx264 @
    0x7f963e001800] mb B I16..4 : 0.0% 0.0% 0.0% B16..8 : 0.0% 0.0%
    0.0% direct : 0.0% skip:100.0%\n[libx264 @ 0x7f963e001800] 8x8 transform intra:0.0%\n[libx264 @ 0x7f963e001800] coded y,uvDC,uvAC
    intra : 0.0% 0.0% 0.0% inter : 0.0% 0.0% 0.0%\n[libx264 @
    0x7f963e001800] i16 v,h,dc,p : 97% 0% 3% 0%\n[libx264 @
    0x7f963e001800] i8c dc,h,v,p : 100% 0% 0% 0%\n[libx264 @
    0x7f963e001800] Weighted P-Frames : Y:0.0% UV:0.0%\n[libx264 @
    0x7f963e001800] kb/s:1.95\n"

  • Output for ffmpeg

    23 juillet 2018, par Zikry Kickbuttowski

    Hello is there a way to output a saved image filename in a format such as yyyy-mm-dd_hrs:min:seconds_imagenumber ? ie (img 2018-07-07_17:34:22_001). And the command has to include fps so that we are able to tweak the fps accordingly. The command also has to churn out images every second. Thanks !

  • The ultimate solution to knowing how your business is performing overall

    8 janvier 2018, par InnoCraft

    Would you like to know how your business is performing overall at a glance ? Guess what, you can now do this easily with Roll-Up Reporting.

    What is Roll-Up Reporting about ?

    Roll-Up Reporting is a premium feature which you can acquire through the Matomo (Piwik) Marketplace. Developed by InnoCraft, the professional company behind Matomo, this plugin will :

    1. Save you heaps of time and gives you completely new insights
    2. Make this process easy as pie
    3. Reflect the structure of your business or organization

    1 – Roll-Up Reporting does the maths for you

    Yes, you read it right. Compared to having to sum reports of multiple websites manually, you can get aggregated results for your business or departments instantly with a single click directly in Matomo (Piwik). Not only does this save you heaps of time compared to doing this complicated work in a spreadsheet, you also avoid human errors. With this feature, you get a clear overview over all your websites, apps, and shops performances.

    For example, if you want to know which referrers bring you the most value across all websites, then you will get the answer in a report. Same results for e-commerce reports, actions, and other metrics.

    2 – Easy as pie, no tracking code involved

    The best part of this feature is that you do not need to push data through additional tracking code. The setup is simple and made through the UI of the plugin.

    3 – Roll-Up Reporting meets even the hardest requirements

    You can also create “nested roll-ups”. This feature allows you to create a roll-up consisting of several other roll-ups. With a nested roll-up, you can create a roll-up for each department in your company (and assign all the websites of a department to that roll-up), then group several departments easily into a new roll-up simply by assigning several department roll-ups to this new roll-up.

    For example, a company with multiple brands can assign multiple websites to each brand, and then get aggregated results for each brand and for the business overall. As a roll-up is basically the same as a website, you can give users access to a roll-up without having to give them access to each site, and the other way around.

    How does it work ?

    As with all premium features, this plugin is straightforward to use. Once activated in your Matomo (Piwik) administrator panel, you will notice that when you add a website, you have the choice between two possibilities :

    When you select the “Roll-Up” option, a new window will appear asking you which websites and mobile apps you would like to aggregate into a roll-up :

    The created roll-up will then be shown just like any other website that you have in Matomo (Piwik). You can create as many roll-up entities as you want.

    Features, such as custom alerts, segments, and e-mail reports work for a roll-up just like for any website.

    Real-Time reports

    One of the most interesting features of Roll-Up Reporting is, that you can view all the Real-Time reports, such as the “Visitors in Real-Time” widget, the “Real-Time Map”, and the “Visitor Log” across several websites making it much easier to keep an eye on your business :

    How to get the Roll-up reporting plugin ?

    Developed by InnoCraft, the makers of Matomo (Piwik), Roll-Up Reporting is a premium feature which you can purchase on the Matomo Marketplace. You can also try it for free on the Matomo Cloud (formerly Piwik Cloud) for 30 days.

    The post The ultimate solution to knowing how your business is performing overall appeared first on Analytics Platform - Matomo.

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