566 reputation
314
bio website
location Cologne, Germany
age
visits member for 3 years, 5 months
seen Aug 13 at 22:51

Functional programming enthusiast, audio engineer & musician. Whilst not busy with any of that, I study physics at Universität zu Köln / Bonn-Cologne Graduate School.


Apr
8
comment Nvidia Cuda video encoder - output frame size
Are you quite sure you didn't do anything else wrong? – I suppose this question is better suited for stackoverflow.com/questions/tagged/cuda, but you will have to provide a short-selfcontained-compilable-example.
Apr
2
comment How to technically tell if a video has been sped up or not?
Decent slow-motion algorithms will use more clever interpolation than just blending between pictures, so even when the video is slowed down to 1/4 its original speed there are no repeated or "mixed" frames. — Anyway, the question was about sped up, not slowed down.
Mar
18
comment Lowest-Latency in Guitar/Vocal software-based effects?
I can't answer the main question, but I can give some guesses to the bonus ones: For 1., I believe the better systems (ASIO, Jack, Core Audio...) all get to the limit of the hardware. There are differences in practise, but these have to do with the kernel and drivers more than the virtual buses. — For 2. I'd strongly suspect WSS. — For 3., yes, how could it not? There's no way the subsequent plugins could foresee what the first one will output after its latency delay. — For 4. I believe it is possible to get zero latency with embedded DSPs (when running with sample-rate synchronous clock).
Feb
25
comment How to technically tell if a video has been sped up or not?
What exactly is your point now? Of course a good guitarist would be able to do it in this tempo (the original version is rather more energetic, but of course that's Paco himself!). It seems highly unlikely to me that they planned to speed this up, but maybe they found out it was slower than intended when they listened to the record but didn't want to record it all over again, and therefore decided to give it just a little extra-push – as you say yourself, a subtle modification with a good program may well stay unnoticable.
Feb
25
comment How to technically tell if a video has been sped up or not?
@filzilla: if anything, there would be less motion blur in a sped-up video – which could actually be used to determine if it was sped up, albeit only very inaccurately (and, of course, it would be easy to add the lacking blur in post-processing). Those shutter settings really don't have anything to do with the studio setting, 1. in any professional studio there is enough lighting to allow good camera settings and 2. since the light doesn't change, neither need the shutter settings, and such change is all that could be used to give a positive answer here.
Feb
3
awarded  Nice Answer
Jan
25
awarded  Editor
Jan
14
comment How do I mute my monitors while leaving headphones on?
Would be useful to know what kind of audio interface you're using.
Sep
28
comment Non-Linear Video Editor for Free or Cheap That Does These Things
Indeed, however both run on Linux which to install costs you nothing but some time – a good investment if you ask me. But you don't have to, of course. Incidentally, I do most AV stuff on Windows, too, but only because the hardware drivers of my audio stuff don't support Linux.
Sep
28
answered Non-Linear Video Editor for Free or Cheap That Does These Things
Sep
13
comment What could be causing these strange MP4 video playback corruptions on some machines?
You can see what codec it is when you open it in, for instance, VLC.
Sep
12
comment What could be causing these strange MP4 video playback corruptions on some machines?
".mp4" doesn't tell us anything about the codec. (See this question, asked just recently.)
Aug
26
comment Convolution matrix for converting 1080i to DVD?
A good idea, however the main problem with DVDs is their outdated MPEG-2 codec, for which it is probably rather benefitial to reduce detail through the somewhat crude gaussian filter step.
Aug
23
awarded  Nice Answer
Aug
19
awarded  Critic
Aug
15
answered Why do weathermen and amateurs use green screens when professional movie makers use blue screens?
Aug
14
comment Why do weathermen and amateurs use green screens when professional movie makers use blue screens?
Blue is much older than green!
Jul
18
awarded  Commentator
Jul
18
comment What is a good workflow for producing High quality High definition Videos suitable for a final upload to the internet.
Even OMFI is not going to be more horrendous than 4 GB for 2 minutes. — Vegas accepts lossy formats better then Avid, but as I said: this will always sacrifice video quality. I personally do not mind for my own YouTube videos, I also use h.264 as an intermediate format to save space. But these videos are not really aimed at high quality anyway.
Jul
18
comment What is a good workflow for producing High quality High definition Videos suitable for a final upload to the internet.
Well you've read wrongly. Do encode to lossless OMFI for editing, which is Avid's native codec. (It takes horrendous amounts of hard disk space, but that's a price you need to pay if you want high quality.) And no other intermediate codecs, each of these will reduce the quality.