How can I achieve this "corrupt compression" effect?
by Tom Darracott
on
Sep 23, 2008 at 11:22:37 am
First of all apologies if this is in the wrong section, I just posted in the compression forum but just noticed this section which is perhaps more appropriate...
I'm trying to achieve this effect for a piece I am creating, it is a print piece so it will be stills rather than moving image.
I believe this glitchy kind of distortion is caused by bad compression or conversion somehow, does anyone know a way of how this effect can be replicated at all? I was hoping to take grabs of existing footage and "force it" to corrupt in this way.
I have been trying things such as converting footage to mpeg4 and then playing back in VLC whilst srubbing the playback head hoping to achieve this effect but its not really working.
Re: How can I achieve this "corrupt compression" effect? by Stephen Smith on Sep 23, 2008 at 12:51:16 pm
In your photo editing application, such as Photoshop. I would cut the image up so you could effect different layers of the same image. Add Blend Modes. Mess with the emboss filter and add some random stuff to the photo as well. Hope this helps.
Re: How can I achieve this "corrupt compression" effect? by Tom Darracott on Sep 23, 2008 at 12:57:47 pm
Many thanks for the reply. I was hoping that rather than creating the effect in photoshop I would be able to force the glitches to occur in a video clip so that the end result was a "happy accident" rather than something that had been composed in photoshop.
I reckon it would be pretty simple to recreate in photoshop but what i really like about the sample image is the pure randomness of the distortion, the way its the result of a technical glitch rather than being "authored"
Re: How can I achieve this "corrupt compression" effect? by Nel Santiago on Sep 23, 2008 at 3:32:45 pm
Short of launching all your apps and hoping that your video player starts running out of memory...which I would NOT suggest. I don't know of any other way of doing that without building a template to process the video. Maybe a jpeg damage plug-in?
Took me a while to find it, but I pulled a file I had done a while back. It was used to simulate the look of a webcam. While it's not exactly what you are looking for it might be a way to get you started. Here is a sample of a clip in the template for reference.
http://www.forbiddensky.com/zips/MPEG_Damage_sample.mov
I went ahead and made some quick notes. If it's useful cool, if not that's all I got :) Funny how the things we try to avoid like that compression breakdown are sometimes the hardest to replicate.
Re: How can I achieve this "corrupt compression" effect? by Tom Darracott on Sep 23, 2008 at 3:47:38 pm
Hi Nel
Thanks a lot for you reply. I checked your movie and thats roughly the same kind of effect I had managed to get using time displacement in AE (I couldn't check your source file as I'm working in an old copy of AE, I'm normally a print guy!).
You're entirely right, replicating those lucky accidents is always tricky! I may have to use a combination of AE and photoshop to cheat the effect, but hopefully someone may be able to point me in the right direction.
Re: How can I achieve this "corrupt compression" effect? by Mark Suszko on Sep 24, 2008 at 1:36:49 pm
Have you tried manually fast-forwarding and reversing a tape while digitizing it, and layering that back over the normal one? There's also a visual synthesizer program or two out there that you might want to look into playing with, some of them let you work with live video. Check this out:
