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Annoying glitch when speeding up video

Posted: 05 Dec 2009 23:38
by thatonekid
MacBook Pro - 2.4 GHz Intel Core 2 Duo
OS X - Version 10.6.2 (Snow Leopard)
VLC 1.03

I download .wmv lectures for my class and play them at 2x speed. Why 2x, well I'm essentially speeding over the fillers/crap and pausing at the important parts to take notes. This problem happens on my laptop's speakers and on my headphones - using the headphone jack at 2X speed. Its not a real issue with my USB headphones, but I can tell when the glitch happens. This does not happen in 1X speed.

This is the problem when I use my headphones in the headphone jack:

Basically I pause the video (using spacebar) and take my notes, then after I press spacebar again to continue the video, almost 75-80% of the time, the video glitches up (I'm guessing b/c its starting to play back into the 2x mode) and suddenly "pops" with this really, really loud noise and then I hear this ringing noise in my ears, it could be b/c of the loud noise damaging my ears, but i'm pretty sure it is coming from my headphones. The video still plays and the speaking volume from my teacher has decreased. I thought the loud noise could by avoided by lowering the volume on my computer and on my vlc player, but it will still pop and make that loud noise regardless of the volume setting.

Using just my laptop's speaker:

Same problem as before, when I press pause, I receive a noisy surprise only this time it is in the form of a really loud beep. Like a computer beep noise that i've heard on my dell's - loud and on for about 2 seconds.

Logitech USB microphone/headphones:

Can't really tell if there is a problem because when I press my spacebar again I just hear a very quick scramble noise and it continues playing no problem.

Sometimes the loud noise will be a quick turn-table type of noise. Loud scratching type of noise. But usually a loud popping noise. I could play the videos in regular 1X speed but then I can just go also play that in Quicktime and thats not the fix i'm looking for. I just want to know if anyone else has had this glitch and if you tech guys at VLC have realized this glitch and have or are going to do something about it. I tried explaining this glitch as much as possible cuz this definitely hurts my ear :oops:. Let me know if theres any other question. Thanks guys.

Re: Annoying glitch when speeding up video

Posted: 05 Dec 2009 23:42
by alexxxxx
hi

Re: Annoying glitch when speeding up video

Posted: 06 Jul 2011 06:23
by joshmax
I got an aluminum iMac (iMac8,1) and experience the same problem. When I'm playing a video at 2x-8x then slow down to 1x, the program sometimes lets rip such an obnoxious extremely loud beep that it wakes my neighbors, startles me to half-dead, shakes me to the core and makes me rethink my entire existence!
I didn't know my mac was able to emit such loud noises till now. This happens with speakers plugged in and without.

VLC Version 1.1.10.1 The Luggage (Intel 64bit) on Mac OSX 10.6.6

Re: Annoying glitch when speeding up video

Posted: 02 Jan 2012 16:40
by d8me
Same problem for me with the very loud noise when re-starting videos on higher speeds. I'm on aluminum iMac with VLC 1.1.12 but the problem also occurred with previous versions and slightly different setups.

Re: Annoying glitch when speeding up video

Posted: 14 Jan 2012 02:21
by mjjr
Macbook 13-inch, Mid 2010
Processor 2.4 GHz Intel Core 2 Duo
Software Mac OS X Lion 10.7.2 (11C74)
Version 1.1.12
I have exactly the same problem! It happens whenever I speed it up... It happens with 1.4x, 1.3x, 1.2x and 1.1x speed. I never had this problem with kmplayer on my PC and now I switched to mac T.T... Please help! I now don't dare to speed up the recordings...I'm a poor student trying to listen to class recordings and unfortunately I have some profs who enjoy talking verrrrry slowly...

Re: Annoying glitch when speeding up video

Posted: 14 Jan 2012 04:01
by nkoriyama
Can you try nightly vlc-1.2.0? (for Mac OS X 10.6 or later)
http://nightlies.videolan.org/build/mac ... l/?C=M;O=D
64bit: vlc-stable-x86_64-YYYYMMDD-hhmm.zip
32bit: vlc-stable-i686-YYYYMMDD-hhmm.zip