Forums > Jitter

looping video problem

November 4, 2008 | 5:57 pm

Hello this is probably a real easy question. When I have a video file playing on loop there is often a white flash at the point that the video returns back to the beginning of the file. I have experimented with making loop points shorter than the whole original file as well as using "loadram" in case it was because the computer was being slowed down by accessing the hard drive. Again, probably real basic stuff…
Thanks in advance for your help.

-B


November 4, 2008 | 6:07 pm


November 10, 2008 | 5:39 am

Hello Hubert thanks for writing. Sorry for the late reply but I’ve been nutty busy.
I am working with Max/MSP 4.6.3 (not sure what version of Jitter that works out to) on a G4 Titanium 867MHz OS 10.3.9 768MB RAM.
I am starting a project based on using short, low-res videos taken on cell phones and digital cameras. I’ll attach one of the files that gives me the flash upon looping even in the Help file for the jit.qt.movie object. Using the "frame $" message is not working for me, I’m not getting something right here. Also I was wondering if you could point me towards a tutorial or lesson on recording QT movies with effects without dropping frames. I have ideas for changing video tarameters with aduio but when I try to make recordings of these, the video files come out all wrong. I have to say the the Jitter Tutorials are pretty slim in general so amy advice is greatly appreciated. There is a section on using frame dump but that doesn’t seem to apply to real time effects with changing variables. Just a thought. Thanks very much for your help. Sincerely, -B

Here is one of those patches…

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#P user levelmeter~ 501 223 64 32 10 100 1000 20 -48 12 0 0 0 0 0;
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#X frgb 69 215 169;
#X rgb2 0 0 0;
#X rgb3 0 0 0;
#X rgb4 0 0 0;
#X rgb5 255 0 0;
#X rgb6 220 100 100;
#X rgb7 220 150 80;
#X rgb8 220 200 100;
#X rgb9 180 210 100;
#X markers 12 6 0 -6 -12 -24 -36 -48 20;
#X markersused 8;
#X done;
#P window linecount 1;
#P newex 577 109 23 196617 abs;
#P newex 580 66 102 196617 zmap -28 12 -80 -1;
#P user jit.pwindow 154 463 102 87 0 1 0 0 1 0;
#P user jit.fpsgui 155 561 60 196617 0;
#P user ezdac~ 353 96 397 129 0;
#P message 417 38 14 196617 0;
#P message 380 38 14 196617 1;
#P message 336 38 30 196617 open;
#N sfplay~ 1 120960 0 ;
#P newobj 414 62 44 196617 sfplay~;
#P toggle 63 443 15 0;
#P window linecount 2;
#P message 63 464 83 196617 ; jitter cursor $1;
#P window linecount 1;
#P newex 63 421 27 196617 !- 1;
#P message 63 399 66 196617 fsmenubar 0;
#P message 265 107 30 196617 read;
#P message 157 154 14 196617 1;
#P number 580 145 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 178 303 95 196617 zmap -48 12 0.3 3;
#P newex 466 82 48 196617 loadbang;
#P message 466 109 26 196617 135;
#P flonum 390 200 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
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#X markers 12 6 0 -6 -12 -24 -36 -48 0;
#X markersused 8;
#X done;
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#P flonum 200 176 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P message 200 197 35 196617 vol $1;
#P newex 200 105 48 196617 loadbang;
#P message 237 154 14 196617 1;
#P newex 63 228 48 196617 loadbang;
#P comment 458 362 40 196617 S start;
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#P newex 458 339 41 196617 s start;
#P newex 427 299 73 196617 select 27 115;
#P newex 427 277 40 196617 key;
#P message 63 379 68 196617 fullscreen $1;
#P toggle 63 357 15 0;
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#P comment 393 340 62 196617 type esc to toggle fullscreen.;
#P window setfont "Fixedwidth Serif" 10.;
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#P flonum 178 331 35 10 0 0 0 22 0 0 0 221 221 221 222 222 222 0 0 0;
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#P message 275 356 83 1441802 saturation $1;
#P message 178 356 88 1441802 brightness $1;
#P window setfont "Sans Serif" 9.;
#P newex 154 384 54 196617 jit.brcosa;
#P window setfont "Sans Serif" 10.;
#P newex 540 180 89 196618 pak dim 0 0;
#P window setfont "Sans Serif" 9.;
#P message 63 310 50 196617 interp $1;
#P toggle 63 292 15 0;
#P message 63 271 55 196617 floating $1;
#P toggle 63 253 15 0;
#P number 237 176 35 9 0 2 3 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P message 237 197 41 196617 loop $1;
#P flonum 156 176 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P message 156 197 42 196617 rate $1;
#P button 124 125 15 0;
#P window setfont Times 10.;
#P comment 147 75 26 1310730 Play;
#P window setfont "Fixedwidth Serif" 10.;
#P newex 124 104 55 1441802 metro 40;
#P toggle 124 75 15 0;
#P newex 154 415 184 1441802 jit.window Movie 5 41 425 381;
#B color 5;
#P newex 154 218 128 1441802 jit.qt.movie 320 240;
#B color 5;
#P window setfont "Sans Serif" 12.;
#P window linecount 3;
#P comment 423 421 220 196620 Patch uses the aplitude of a sound file to change brightness and saturation of a movie;
#P connect 31 0 11 0;
#P connect 11 0 12 0;
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#P connect 18 0 16 0;
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#P connect 33 0 36 0;
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#P connect 32 0 10 0;
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#P connect 45 0 15 1;
#P connect 61 0 59 0;
#P connect 60 0 45 0;
#P connect 45 0 15 2;
#P window clipboard copycount 63;


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