/usr/share/psychtoolbox-3/PsychOneliners/SaveMovieFrames.m is in psychtoolbox-3-common 3.0.11.20131230.dfsg1-1build1.
This file is owned by root:root, with mode 0o644.
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% function SaveMovieFrames(framenr,filmname,filmdir,outdir):
%
% loads a GUI in which movie FILMNAME in FILMDIR can be played and seeked
% through. Movie is opened on frame FRAMENR. Screenshots of frames can be
% saved as png in OUTDIR by pressing the save button.
% JJvR 26-02-2008
%% Initialise GUI figure
figure;
set(gcf,'Visible','off','Position',[600 300 900 600]);
set(gca,'Position',[.1 .1 .7 .8]);
axis ij; axis equal; axis off;
data = guidata(gcf);
data.filmnaam = filmnaam;
data.framenr = framenr;
data.filmdir = filmdir;
data.outdir = outdir;
data.filminfo = aviinfo([data.filmdir filesep data.filmnaam]);
pause on;
guidata(gcf,data);
takeframe;
plotframe;
hpluseen = uicontrol(...
'Style','pushbutton',...
'String','Next Frame',...
'Position',[750,500,120,40],...
'Callback',{@Pluseen_Callback},...
'Tag','Pluseen');
hmineen = uicontrol(...
'Style','pushbutton',...
'String','Prev Frame',...
'Position',[750,425,120,40],...
'Callback',{@Mineen_Callback},...
'Tag','Mineen');
hplusvijf = uicontrol(...
'Style','pushbutton',...
'String','5 forward',...
'Position',[750,350,120,40],...
'Callback',{@Plusvijf_Callback},...
'Tag','Plusvijf');
hminvijf = uicontrol(...
'Style','pushbutton',...
'String','5 back',...
'Position',[750,275,120,40],...
'Callback',{@Minvijf_Callback},...
'Tag','Minvijf');
hplay = uicontrol(...
'Style','togglebutton',...
'String','Play',...
'Position',[750,200,120,40],...
'Callback',{@Play_Callback},...
'Tag','Minvijf');
hSave = uicontrol(...
'Style','pushbutton',...
'String','Save',...
'Position',[750,125,120,40],...
'Callback',{@Save_Callback},...
'Tag','SaveButton');
hTerug = uicontrol(...
'Style','pushbutton',...
'String','Close',...
'Position',[750,50,120,40],...
'Callback',{@Terug_Callback},...
'Tag','SaveButton');
set(gcf,'Visible','on');
end
%% Callbacks
function Pluseen_Callback(source,eventdata,handles)
updaterelframe(1);
plotframe;
end
function Mineen_Callback(source,eventdata,handles)
updaterelframe(-1);
plotframe;
end
function Plusvijf_Callback(source,eventdata,handles)
updaterelframe(5);
plotframe;
end
function Minvijf_Callback(source,eventdata,handles)
updaterelframe(-5);
plotframe;
end
function Play_Callback(source,eventdata,handles)
data = guidata(gcf);
playing = true;
while playing
if (get(gcbo, 'Value')) == 0
playing = false;
end
updaterelframe(1);
pause(1/25);
plotframe;
end
end
function Save_Callback(source,eventdata,handles)
data = guidata(gcf);
if ~isdir(data.outdir)
mkdir(data.outdir);
end
imwrite(data.film(data.relframe).cdata,[data.outdir filesep data.filmnaam(1:end-4) ' frame ' num2str(data.framenr - 21 + data.relframe) '.png'],'png');
end
function Terug_Callback(source,eventdata,handles)
close(gcf);
end
%% Supporting functions
function takeframe
data = guidata(gcf);
data.addrelframe = 0;
if data.framenr + 40 > data.filminfo.NumFrames
data.addrelframe = 40 - (data.filminfo.NumFrames - data.framenr);
data.framenr = data.filminfo.NumFrames - 40;
if data.addrelframe > 40
data.addrelframe = 40;
end
elseif data.framenr - 10 < 1
data.addrelframe = data.framenr - 10;
data.framenr = 11;
if data.addrelframe < -10
data.addrelframe = -10;
end
end
data.film = aviread([data.filmdir filesep data.filmnaam], data.framenr-10:data.framenr+40);
data.relframe = 11 + data.addrelframe;
guidata(gcf,data);
end
function plotframe
data = guidata(gcf);
image(data.film(data.relframe).cdata);
end
function updaterelframe(input)
data = guidata(gcf);
data.relframe = data.relframe+input;
guidata(gcf,data);
checkrelframe;
end
function checkrelframe
data = guidata(gcf);
if data.relframe > 51 || data.relframe < 1
getnewrelframe;
end
end
function getnewrelframe
data = guidata(gcf);
data.framenr = (data.framenr - 11 + data.relframe);
guidata(gcf,data);
takeframe;
end
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