You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ReinhardTMOv.m
    path of file: ./repos/HDR_Toolbox/source_code/Tmo_video
    
    the code of the file until where you have to start completion: function ReinhardTMOv(hdrv, filenameOutput, tmo_alpha, tmo_white, tmo_gamma, tmo_quality, tmo_video_profile)
%
%
%      ReinhardTMOv(hdrv, filenameOutput, tmo_alpha, tmo_white, tmo_gamma, tmo_quality, tmo_video_profile)
%
%
%       Input:
%           -hdrv: a HDR video structure; use hdrvread to create a hdrv
%           structure
%           -filenameOutput: output filename (if it has an image extension,
%           single files will be generated)

    
function ReinhardTMOv(hdrv, filenameOutput, tmo_alpha, tmo_white, tmo_gamma, tmo_quality, tmo_video_profile)
%
%
%      ReinhardTMOv(hdrv, filenameOutput, tmo_alpha, tmo_white, tmo_gamma, tmo_quality, tmo_video_profile)
%
%
%       Input:
%           -hdrv: a HDR video structure; use hdrvread to create a hdrv
%           structure
%           -filenameOutput: output filename (if it has an image extension,
%           single files will be generated)
%           -tmo_alpha:
%           -tmo_white: 
%           -tmo_gamma: gamma for encoding the frame
%           -tmo_quality: the output quality in [1,100]. 100 is the best quality
%           1 is the lowest quality.%
%           -tmo_video_profile: the compression profile (encoder) for compressing the stream.
%           Please have a look to the profile of VideoWriter from the MATLAB
%           help. Depending on the version of MATLAB some profiles may be not
%           be present.
%
%     Copyright (C) 2013-15 Francesco Banterle
% 
%     This program is free software: you can redistribute it and/or modify
%     it under the terms of the GNU General Public License as published by
%     the Free Software Foundation, either version 3 of the License, or
%     (at your option) any later version.
% 
%     This program is distributed in the hope that it will be useful,
%     but WITHOUT ANY WARRANTY; without even the implied warranty of
%     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%     GNU General Public License for more details.
% 
%     You should have received a copy of the GNU General Public License
%     along with this program.  If not, see <http://www.gnu.org/licenses/>.
%
%     The paper describing this technique is:
%     "Real-time Automated Tone Mapping System for HDR Video"
% 	  by Chris Kiser, Erik Reinhard, Mike Tocci and Nora Tocci
%     in IEEE International Conference on Image Processing, 2012 
%
%

if(~exist('tmo_alpha', 'var'))
    tmo_alpha = 0.5;
end

if(~exist('tmo_white', 'var'))
    tmo_white = 1e6;
end

if(~exist('tmo_gamma', 'var'))
    tmo_gamma = -2.2;
end

if(tmo_gamma < 0)
    bsRGB = 1;
else
    bsRGB = 0;
end

if(~exist('tmo_quality', 'var'))
    tmo_quality = 95;
end

if(~exist('tmo_video_profile', 'var'))
    tmo_video_profile = 'MPEG-4';
end

name = RemoveExt(filenameOutput);
ext  = fileExtension(filenameOutput);

bVideo = 0;
writerObj = 0;

if(strcmp(ext, 'avi') == 1 | strcmp(ext, 'mp4') == 1)
    bVideo = 1;
    writerObj = VideoWriter(filenameOutput, tmo_video_profile);
    writerObj.FrameRate = hdrv.FrameRate;
    writerObj.Quality = tmo_quality;
    open(writerObj);
end