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