[Haifux] Technion video

Ohad Lutzky ohad at lutzky.net
Thu Nov 19 10:47:36 MSK 2009

The "X2 velocity" terminology is confusing, let's try and set it straight:
What students want to do is watch videos at increased speed, without
affecting pitch (usually speeding up playback of audio causes pitch to rise,
which causes a "chipmunk voice" effect). There are several libraries for
Linux which increase audio speed without affecting pitch, the best-known
being libsoundtouch. To my knowledge, libsoundtouch has no been formally
incorporated into any media player. However, there is a relatively new
project called ScaleTempo (http://scaletempo.sh.net) which provides this
capability for several media players, including VLC (into which the patch
has formally been accepted). Please test a ScaleTempo-enabled version of
whatever media player is currently used to view Technion video (vlc, if I'm
not mistaken).

2009/11/18 Shahar Dag <dag at cs.technion.ac.il>

>  Hello
> One of the complains I gets from students in SSDL is that they can't view
> the Technion's video in X2 velocity.
> I talked with the people from computer center and they told me that:
> the video server is MS windows media server 9
> the video encoding is MS windows media video
> the transmission protocol is RTSP over TCP
> is there is a way to view the video on Linux (Ubuntu) in high speed?
> Thanks in advanced
> Shahar Dag
> System & Software Development Laboratory (SSDL)
> Computer Science Department
> Technion - Israel Institute of Technology
> Haifa, Israel
> Tel. 972-4-829-4880
> Fax 972-4-829-4878
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Man is the only animal that laughs and weeps, for he is the only animal that
is struck with the difference between what things are and what they ought to
- William Hazlitt

Ohad Lutzky
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