<p>As I am familiar with <a href="http://manual.audacityteam.org/man/change_tempo.html" rel="nofollow noreferrer">Audacity</a> I have found it through <code>Effects</code> -> <code>Change Tempo...</code></p>

<p><a href="https://i.sstatic.net/ZFAd9.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/ZFAd9.png" alt="enter image description here"></a></p>

CC BY-SA 3.0
2017-03-09T22:39:17.183Z
2017-03-09T22:39:17.183Z
Mahdi Alkhatib
<p>You don't do this in Camtasia as it doesn't appear that Camtasia supports pitch shifting at this point although there has definitely been some <a href="https://feedback.techsmith.com/techsmith/topics/speeding_up_the_video_speed_without_effecting_audio_pitch" rel="nofollow noreferrer">discussion of the topic</a> for quite some time. </p>

<p>There are alternate solutions however, ffmpeg has this capability through the <a href="https://www.ffmpeg.org/ffmpeg-filters.html#atempo" rel="nofollow noreferrer">atempo</a> and <a href="https://www.ffmpeg.org/ffmpeg-filters.html#asetrate" rel="nofollow noreferrer">aserate</a> audio filters, I understand that you can do this with audacity and sox as well. If you have any interest in any of these approaches and would like further detail drop me a comment and I'll do my best to accommodate you.</p>

<p>According to @Mulvya you can also accomplish this with an ffmpeg build compiled to support <a href="http://breakfastquay.com/rubberband/" rel="nofollow noreferrer">librubberband</a> You can compile it your self or there are Windows XP compatible builds available <a href="https://sourceforge.net/projects/ffmpegwindowsbi/" rel="nofollow noreferrer">here</a> which I've confirmed run under <a href="https://www.winehq.org/" rel="nofollow noreferrer">Wine</a></p>

<p>There's also a stand alone utility that I haven't used that you can obtain from the librubberband link above. It appears that that is limited to adjusting WAV files.</p>

<p>Some sources:</p>

<p><a href="https://superuser.com/questions/292833/how-to-change-audio-frequency">https://superuser.com/questions/292833/how-to-change-audio-frequency</a></p>

<p><a href="https://superuser.com/questions/1118826/change-tone-pitch-for-file-audio">https://superuser.com/questions/1118826/change-tone-pitch-for-file-audio</a></p>

<p><a href="https://www.ffmpeg.org/documentation.html" rel="nofollow noreferrer">https://www.ffmpeg.org/documentation.html</a></p>

<p><a href="https://feedback.techsmith.com/techsmith/topics/speeding_up_the_video_speed_without_effecting_audio_pitch" rel="nofollow noreferrer">https://feedback.techsmith.com/techsmith/topics/speeding_up_the_video_speed_without_effecting_audio_pitch</a></p>

CC BY-SA 3.0
2017-03-08T20:34:53.197Z
The OP doesn't want to change pitch, so atempo and asetrate won't work. ffmpeg can be compiled with an external lib - rubberband, that will preserve pitch through tempo change. I don't know of a redistributable ffmpeg binary that has it. But it's also available as a [standalone binary](http://breakfastquay.com/rubberband/) that works with WAV.
Gyan
CC BY-SA 3.0
2017-03-08T20:43:20.690Z
@Mulva Yes rubberband. That's in my second source. Thank you. Is it your contention that chaining the filters aserate and atempo won't work on the source file before speed adjustment of the output file after speed adjustment. Thank you for your clarification.
Elder Geek
CC BY-SA 3.0
2017-03-08T22:15:38.337Z
@Mulvya edited answer
Elder Geek
CC BY-SA 3.0
2017-03-09T22:30:27.663Z
@Mulvya is right, I need to speed up the video but maintaining the same pitch. I have found it in Audacity which I am families with, through Effects -> Tempo. I am wondering what is equivalent to YouTube 1.25X in Audacity Tempo.
Mahdi Alkhatib
CC BY-SA 3.0
2017-03-10T13:03:10.853Z
Mathematics says 1,25X = 125%
Elder Geek
CC BY-SA 3.0
2017-03-08T19:20:11.403Z
2017-03-08T22:14:18.253Z
2017-03-20T10:04:28.637Z
Elder Geek
<p>I have video tutorials that I am producing using Camtasia using the following process:</p>

<ol>
<li>Write Script.</li>
<li>Record a voice over.</li>
<li>Record screen while listening the voice over steps.</li>
<li>merge sound and screen recording.</li>
</ol>

<p>My recordings are little a bit slow and boring and I would like to speed them up like YouTube speed 1.25X, but whenever I speed them up my voice tone changes badly (get more thinner) unlike YouTube Playback, the voice flows at higher rate and voice tone is normal.</p>

<p>How Can I speed them up without affecting my voice tone?</p>

CC BY-SA 3.0
2017-03-08T15:06:09.370Z
Have you considered using ffmpeg to split the audio and video tracks? By processing only the video, the audio will remain unchanged. Of course your audio will be out of sync with the new shorter duration video track, Whether this is a problem largely depends on the length of the content and might be resolved by selectively removing silence from the audio track. Sorry, I'm not familiar with Camtasia. I hope this helps.
Elder Geek
CC BY-SA 3.0
2017-03-08T18:14:40.770Z
@ElderGeek This feature is available in Camtasia, but as you said the audio will be out of sync especially when we are talking about 3 to 5 minutes videos. and it's hard to remove silence.
Mahdi Alkhatib
CC BY-SA 3.0
2017-03-08T18:59:36.463Z
On a voice over? over 3 to 5 minutes? I guess I imagined a narration where the voice isn't synced to the imagery.  You'd only need to cut 45 - 75 seconds of audio to match the duration. Perhaps I'm not fully understanding your issue. Would you be do kind as to [edit] further detail into your post to help clarify the issue?
Elder Geek
CC BY-SA 3.0
2017-03-08T19:33:35.133Z
It may not be as hard to [remove silence](https://ffmpeg.org/ffmpeg-filters.html#silenceremove) as you think.
Elder Geek
CC BY-SA 3.0
2017-03-08T23:32:08.187Z
Youtube speed adjustment feature is a client side script (the browser is doing it with javascript). There is no extra encoding process to make this feature available. If you are Web delivering this content in your control on your site, you can use javascript to auto play your videos at that speed.
user3643
CC BY-SA 3.0
2017-03-08T23:34:23.340Z
Where and how are these videos being distributed?
user3643
CC BY-SA 3.0
2017-03-26T10:56:44.030Z
@fredsbend on Youtube.
Mahdi Alkhatib
CC BY-SA 3.0
2017-03-26T15:41:36.000Z
@mahdi Then you don't need to do anything. The feature is already built in to the youtube player. You can use an annotation note to tell viewers to turn the speed up.
user3643
CC BY-SA 3.0
2017-03-26T22:15:00.863Z
@fredsbend I don't want workarounds. I already know that my pace it too slow and boring. I appreciate your help.
Mahdi Alkhatib
<youtube><playback><production>
How to speed up playback speed like YouTube using Camtasia?
Mahdi Alkhatib
# How to speed up playback speed like YouTube using Camtasia?

(Asked by: username_0 on 2017-03-07)

I have video tutorials that I am producing using Camtasia using the following process:

1. Write Script.
2. Record a voice over.
3. Record screen while listening the voice over steps.
4. merge sound and screen recording.

My recordings are little a bit slow and boring and I would like to speed them up like YouTube speed 1.25X, but whenever I speed them up my voice tone changes badly (get more thinner) unlike YouTube Playback, the voice flows at higher rate and voice tone is normal.

How Can I speed them up without affecting my voice tone?

**Tags:** youtube, playback, production

> **Comments:**
> **username_1**: Have you considered using ffmpeg to split the audio and video tracks? By processing only the video, the audio will remain unchanged. Of course your audio will be out of sync with the new shorter duration video track, Whether this is a problem largely depends on the length of the content and might be resolved by selectively removing silence from the audio track. Sorry, I'm not familiar with Camtasia. I hope this helps.  
> **username_0**: @ElderGeek This feature is available in Camtasia, but as you said the audio will be out of sync especially when we are talking about 3 to 5 minutes videos. and it's hard to remove silence.  
> **username_1**: On a voice over? over 3 to 5 minutes? I guess I imagined a narration where the voice isn't synced to the imagery.  You'd only need to cut 45 - 75 seconds of audio to match the duration. Perhaps I'm not fully understanding your issue. Would you be do kind as to [edit] further detail into your post to help clarify the issue?  
> **username_1**: It may not be as hard to [remove silence](https://ffmpeg.org/ffmpeg-filters.html#silenceremove) as you think.  
> **username_2**: Youtube speed adjustment feature is a client side script (the browser is doing it with javascript). There is no extra encoding process to make this feature available. If you are Web delivering this content in your control on your site, you can use javascript to auto play your videos at that speed.  
> **username_2**: Where and how are these videos being distributed?  
> **username_0**: @fredsbend on Youtube.  
> **username_2**: @mahdi Then you don't need to do anything. The feature is already built in to the youtube player. You can use an annotation note to tell viewers to turn the speed up.  
> **username_0**: @fredsbend I don't want workarounds. I already know that my pace it too slow and boring. I appreciate your help.  

---

## 2 answers

### Answer by username_0 on 2017-03-09. Score: 0 | Accepted answer

As I am familiar with [Audacity](http://manual.audacityteam.org/man/change_tempo.html) I have found it through `Effects` -> `Change Tempo...`

[![enter image description here](https://i.sstatic.net/ZFAd9.png)](https://i.sstatic.net/ZFAd9.png)


---

### Answer by username_1 on 2017-03-08. Score: 2

You don't do this in Camtasia as it doesn't appear that Camtasia supports pitch shifting at this point although there has definitely been some [discussion of the topic](https://feedback.techsmith.com/techsmith/topics/speeding_up_the_video_speed_without_effecting_audio_pitch) for quite some time.

There are alternate solutions however, ffmpeg has this capability through the [atempo](https://www.ffmpeg.org/ffmpeg-filters.html#atempo) and [aserate](https://www.ffmpeg.org/ffmpeg-filters.html#asetrate) audio filters, I understand that you can do this with audacity and sox as well. If you have any interest in any of these approaches and would like further detail drop me a comment and I'll do my best to accommodate you.

According to @Mulvya you can also accomplish this with an ffmpeg build compiled to support [librubberband](http://breakfastquay.com/rubberband/) You can compile it your self or there are Windows XP compatible builds available [here](https://sourceforge.net/projects/ffmpegwindowsbi/) which I've confirmed run under [Wine](https://www.winehq.org/)

There's also a stand alone utility that I haven't used that you can obtain from the librubberband link above. It appears that that is limited to adjusting WAV files.

Some sources:

<https://superuser.com/questions/292833/how-to-change-audio-frequency>

<https://superuser.com/questions/1118826/change-tone-pitch-for-file-audio>

<https://www.ffmpeg.org/documentation.html>

<https://feedback.techsmith.com/techsmith/topics/speeding_up_the_video_speed_without_effecting_audio_pitch>

> **Comments:**
> **username_3**: The OP doesn't want to change pitch, so atempo and asetrate won't work. ffmpeg can be compiled with an external lib - rubberband, that will preserve pitch through tempo change. I don't know of a redistributable ffmpeg binary that has it. But it's also available as a [standalone binary](http://breakfastquay.com/rubberband/) that works with WAV.  
> **username_1**: @Mulva Yes rubberband. That's in my second source. Thank you. Is it your contention that chaining the filters aserate and atempo won't work on the source file before speed adjustment of the output file after speed adjustment. Thank you for your clarification.  
> **username_1**: @Mulvya edited answer  
> **username_0**: @Mulvya is right, I need to speed up the video but maintaining the same pitch. I have found it in Audacity which I am families with, through Effects -> Tempo. I am wondering what is equivalent to YouTube 1.25X in Audacity Tempo.  
> **username_1**: Mathematics says 1,25X = 125%  

---

