Added pre-written files from program

This commit is contained in:
Thomas A. Christensen II 2017-02-01 14:38:39 -07:00 committed by GitHub
parent ecda8ff418
commit 994de06470
3 changed files with 140 additions and 0 deletions

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DiCodecDisplay.m Normal file
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function DiCodecDisplay(frameHeight, frameWidth, frameRate, blnMac)
clc
% Check if the user has a Mac computer or not
if blnMac == 1
strDi = 'ProRes Proxy';
else
strDi = 'Cineform, Low-Quality';
end
% Display the results
disp('Render your video with the following settings:')
disp(['Codec: ' strDi])
disp(['Frame Height: ' num2str(round(frameHeight)) ' px'])
disp(['Frame Width: ' num2str(round(frameWidth)) ' px'])
disp(['Framerate: ' num2str(frameRate) 'fps'])
end

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H264CodecDisplay.m Normal file
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function H264CodecDisplay(frameHeight, frameWidth, frameRate, bitrate)
clc
% Display the results to the user
disp('Render your video with the following settings:')
disp('Codec: H.264')
disp(['Frame Height: ' num2str(round(frameHeight)) ' px'])
disp(['Frame Width: ' num2str(round(frameWidth)) ' px'])
disp(['Framerate: ' num2str(round(frameRate)) ' fps'])
disp(['Bitrate: ' num2str(bitrate/1000000) ' Mbps'])
end

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main.m Normal file
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% BitrateChooser v. 0.0.0.1
% Copyright (c) 2016, Thomas A. Christensen II
% All rights reserved.
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are
% met:
%
% 1. Redistributions of source code must retain the above copyright notice,
% this list of conditions and the following disclaimer.
%
% 2. Redistributions in binary form must reproduce the above copyright
% notice, this list of conditions and the following disclaimer in the
% documentation and/or other materials provided with the distribution.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
% IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
% THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
% PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
% CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
% EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
% PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
% PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
% LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
% NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
% SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
%
% This script accepts inputs and chooses the appropriate bitrate and codec
% for a video matching those specifications to be uploaded to Vimeo
% Prepare the workspace for computation
clear
clc
close all
% Ask the user for input
userFrameHeight = input('Please input frame height (px): ');
userFrameWidth = input('Please input frame width (px): ');
userFrameRate = input('Please input the framerate (fps): ');
userMotionRank = input('Please input the Kush motion rank (1, 2, or 4): ');
userVideoLength = input('Please input video length (s): ');
% Determine if ProRes is an available option for the user
userMac = input('Do you own an Apple Macintosh computer? (0/1) ');
if userMac == 1
% The documented bitrate of ProRes Proxy is 45 Mbps for a
% 1920x1080p29.87 video.
% Set the DI codec rate to this number coverted to bits/pixel
diDataRate = 45*1000000/(1920*1080*29.97);
else
% The documented bitrate of Cineform Low-Quality is 10 MBps for a
% 1920x1080p23.976 video.
% Set the DI codec rate to this number converted to bits/pixel
diDataRate = 10*8*1000000/(1920*1080*24.976);
end
% Define common frame heights of videos to use
% (Frame heights taken from: https://en.wikipedia.org/wiki/2K_resolution#/
% media/File:Vector_Video_Standards8.svg)
frameHeights = [4096 3840 3440 2560 2048 1920 1680 1440 1366 1280 1152 1080 ...
1024 960 854 800 768 720 640 540 480 384 352 320];
% Determine where the video fits within these preset frame heights and
% delete any sizes larger that that
smallFrameHeightI = find(frameHeights<=userFrameHeight);
frameHeights = frameHeights(smallFrameHeightI); %#ok<FNDSB>
clear smallFrameHeightI
% Calculate the aspect ratio (width/height)
aspectRatio = userFrameWidth / userFrameHeight;
% Calculate the correct framerate
reFrameRate = userFrameRate;
while reFrameRate > 30
reFrameRate = reFrameRate / 2;
end
% Calculate the size of a Vimeo Basic weekly quota in bits
vimeoBasicQuota = 500*1000000*8;
% Determine the settings for each codec and frame size
for n = 1:length(frameHeights)
% Calculate the new frame information for this size
reFrameHeight = frameHeights(n);
reFrameWidth = frameHeights(n)*aspectRatio;
% Calculate the amount of data used by this video in DI codec
diVideoLength = diDataRate*reFrameHeight*reFrameWidth*reFrameRate*...
userVideoLength;
% Determine if this amount of data is allowed in the Vimeo quota
if diVideoLength <= vimeoBasicQuota
DiCodecDisplay(reFrameHeight, reFrameWidth, reFrameRate, userMac);
return
end
% Calculate the amount of data this video will require according to the
% Kush guage
kushVideoLength = 0.07*reFrameHeight*reFrameWidth*reFrameRate*...
userVideoLength*userMotionRank;
% Determine if this amount of data is allowed in the Vimeo quota
if kushVideoLength <= vimeoBasicQuota
% Calculate the bitrate that maximizes the Vimeo quota
maxBitrate = vimeoBasicQuota / userVideoLength;
% Display results to the user
H264CodecDisplay(reFrameHeight, reFrameWidth, reFrameRate, maxBitrate);
return
end
end