Metadata-Version: 1.2
Name: bufferer
Version: 0.16
Summary: Insert fake buffering events into video files.
Home-page: https://github.com/slhck/bufferer
Author: Werner Robitza
Author-email: werner.robitza@gmail.com
License: MIT
Description: Bufferer
        ========
        
        |PyPI version|
        
        Inserts fake rebuffering events into video.
        
        Author: Werner Robitza werner.robitza@gmail.com
        
        |image1|
        
        Contents:
        
        -  `Requirements <#requirements>`__
        -  `Installation <#installation>`__
        -  `Usage <#usage>`__
        -  `Caveats <#caveats>`__
        -  `Acknowledgements <#acknowledgements>`__
        -  `Helpful info <#helpful-info>`__
        -  `License <#license>`__
        
        Requirements
        ------------
        
        -  Python 3.6
        -  FFmpeg:
        
           -  download a static build from `their
              website <http://ffmpeg.org/download.html>`__)
           -  put the ``ffmpeg`` executable in your ``$PATH``
        
        Installation
        ------------
        
        ::
        
           pip3 install bufferer
        
        Or clone this repository, then run the tool with ``python -m bufferer``.
        
        Usage
        -----
        
        ::
        
           Usage:
           bufferer    [-hfne] -i <input> -b <buflist> -o <output>
                       [-v <vcodec>] [-a <acodec>]
                       [-x <pixfmt>]
                       [-s <spinner>] [--disable-spinner] [-p <speed>]
                       [-t <trim>]
                       [-r <brightness>]
                       [-l <blur>]
                       [--black-frame]
                       [--force-framerate]
                       [--verbose] [--version]
        
           -h --help                     show help message
           -f --force                    force overwrite output files
           -n --dry-run                  only print final command, do not run
           -i --input <input>            input video file
           -b --buflist <buflist>        list of buffering events in format "[[x1,y1], [x2,y2],...]" or
                                         "[x1,y1], [x2,y2], ..." where x = position of event in seconds, y = duration of event
           -o --output <output>          output video file
           -v --vcodec <vcodec>          video encoder to use (see `ffmpeg -encoders`) [default: ffv1]
           -a --acodec <acodec>          audio encoder to use (see `ffmpeg -encoders`) [default: pcm_s16le]
           -x --pixfmt <pixfmt>          set pixel format for output [default: yuv420p]
           -s --spinner <spinner>        path to spinner animated file or video [default: spinners/spinner-256-white.png]
           -e --disable-spinner          disable spinner, just show stopped video
           -p --speed <speed>            speed of the spinner, rounded to integer [default: 2]
           -t --trim <trim>              trim video to length in seconds or "HH:MM:SS.msec" format
           -r --brightness <brightness>  change brightness during buffering, use values between -1.0 and 1.0 [default: 0.0]
           -l --blur <blur>              change blur during buffering, value specifies kernel size [default: 5]
           -c --black-frame              start with a black frame if there is buffering at position 0.0
           --force-framerate             force output framerate to be the same as the input video file
           --verbose                     show verbose output
           --version                     show version
        
        Caveats
        -------
        
        -  The time stamps for the buffering list must be given in media time.
           If, for example, you want an initial loading time of 5 seconds, and
           then a stalling event to occur 10 seconds into the video, specify
           ``[[0, 5], [10, 5]]``.
        -  You need to pick a proper output file format for the codecs you
           choose. Use ``.avi`` for the FFV1 and PCM WAV defaults.
        -  Make sure to select the right pixel format as output,
           e.g. ``--pixfmt yuv420p`` for higher compatibility.
        
        Acknowledgements
        ----------------
        
        -  Big Buck Bunny: Blender Foundation
        -  Free spinners from http://preloaders.net/en/free
        -  Click from http://metronomer.com/
        -  Count from https://www.youtube.com/watch?v=U03lLvhBzOw
        
        Helpful info
        ------------
        
        To generate AV sync samples:
        
        ::
        
           ffmpeg \
           -y \
           -f lavfi -i testsrc=duration=60:size=320x240:rate=60,format=pix_fmts=yuv420p \
           -i click_and_count.m4a
           <output>
        
        Sample command to test buffering:
        
        ::
        
           ffmpeg \
           -y \
           -f lavfi -i testsrc=duration=60:size=320x240:rate=60,format=pix_fmts=yuv420p \
           -i spinners/click_and_count.m4a \
           -filter_complex " \
               [0:v] \
                   loop=loop=240:size=1:start=0, setpts=N/FRAME_RATE/TB, \
                   loop=loop=30:size=1:start=840, setpts=N/FRAME_RATE/TB, \
                   loop=loop=84:size=1:start=1140, setpts=N/FRAME_RATE/TB, \
                   loop=loop=48:size=1:start=1548, setpts=N/FRAME_RATE/TB \
               [stallvid]; \
                   movie=filename=spinners/spinner-64-white.png:loop=0, setpts=N/(FRAME_RATE*TB)*2 \
               [spinner]; \
               [stallvid][spinner] \
                   overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2:shortest=1:\
                   enable='between(t,0,4.0)+between(t,14.0,14.5)+between(t,19.0,20.4)+between(t,25.8,26.6)' \
               [outv];
               [1:a] \
                   aloop=loop=192000:size=1:start=0, asetpts=N/SAMPLE_RATE/TB, \
                   aloop=loop=24000:size=1:start=672000, asetpts=N/SAMPLE_RATE/TB, \
                   aloop=loop=67200:size=1:start=912000, asetpts=N/SAMPLE_RATE/TB, \
                   aloop=loop=38400:size=1:start=1238399, asetpts=N/SAMPLE_RATE/TB, \
                   volume=0:enable='between(t,0,4.0)+between(t,14.0,14.5)+between(t,19.0,20.4)+between(t,25.8,26.6)' \
               [outa] \
           " -shortest -map "[outv]" -map "[outa]" output.mp4
        
        License
        -------
        
        bufferer, Copyright (c) 2017-2019 Werner Robitza
        
        Permission is hereby granted, free of charge, to any person obtaining a
        copy of this software and associated documentation files (the
        “Software”), to deal in the Software without restriction, including
        without limitation the rights to use, copy, modify, merge, publish,
        distribute, sublicense, and/or sell copies of the Software, and to
        permit persons to whom the Software is furnished to do so, subject to
        the following conditions:
        
        The above copyright notice and this permission notice shall be included
        in all copies or substantial portions of the Software.
        
        THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS
        OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
        MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
        IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
        CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
        TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
        SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
        
        .. |PyPI version| image:: https://badge.fury.io/py/bufferer.svg
           :target: https://badge.fury.io/py/bufferer
        .. |image1| image:: preview.gif
        
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: Topic :: Multimedia :: Video
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Requires-Python: ~=3.5
