Sometimes this effect of multiple lossy compressions is very apparent on certain... ahem... adult sites, which steal content from other adult sites. When the content has been decompressed and recompressed enough times certain artifacts start to appear, as well as other issues like aspect ratio problems.
Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
21–30 of 147 posts
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#22What's the difference between an artist and a Perl programmer? 364 days and 23 hours.
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#23I did something like this - I took an image and rotated it a couple hundred times in Windows Explorer. It gradually degraded into a blurry blob.
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#24He probably could have saved a lot of time with a shell script :)
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#25I bet Christopher (prawn protagonist of District 9) might be able to grok the bizarre utterances in the 1000th video... but I can't.
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#26The process reminds me of this post: http://hackerfactor.com/blog/index.php?/archives/355-How-I-M...
Great post, I wonder if the trick that photoshop is pulling is really beneficial or worse in the long term.
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#27I'm surprised it continued to change after detail was lost. Seems like there would be some measurable property of a codec/decode process that could be quantified - the entropy? It would be a desirable property to be 'idem-potent', e.g. after one cycle the result settles.
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#28Does this mean YouTube's compression settings don't target a specific bit-rate but instead aim to make it "no larger than X and at least y% smaller" than what was uploaded?
I'm surprised it's not just a pass-through at a certain point (if nothing else, that'd save CPU cycles).
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#29I can understand the video getting messed up, but what happened to the audio? From what I understand re-encoding an mp3 doesn't do much - all the waveforms that were going to be thrown out, were already the first time. On the second pass nothing much changes.
Or did he rip the video using speakers and mic, rather than downloading the digital data from youtube?
I have a feeling the errors came during the ripping process, not the encoding process.
Re: Guy uploads, downloads, then re-uploads the same video to YouTube 1,000 times
#30Earlier quoted context omitted.
Sometimes the artistic process is just as important as the final product.
A lot of modern art is sold as a story, and for whatever reason the kind of folks who matter think that "did something by hand a thousand times" is a much better story than "wrote a Perl script." Art isn't the only thing that has stories, incidentally. Tomatoes have stories these days. (OK, the kind of tomatoes rich people eat have stories. Only poor people eat tomatoes that have no stories.)
i think products targeted at low income demographics are very much sold with a story. a kind of utilitarian "sensibleness" which facilitates contempt for more expensive products.
why would advertisers neglect to exploit human psychology at all socioeconomic levels?