Q: What is a slidetalk video?A slidetalk video is a video made by playing a Powerpoint file or a sequence of still pictures (slides) each with a description that is read out aloud by a text-to-speech engine. Slidetalk videos are a great way to publish and share your presentations including your own comment to the slides, but without the hassle of needing to speak the comments yourself into a microphone or hire a voice talent.
Here is an example of slidetalk video, illustrating the slidetalk concept.
Q: How do I create an account for SlideTalk?To create an account for SlideTalk all you need is to have a login for facebook, google, yahoo or windows live.
Click on "Log in" in the top right corner, choose the service you want to use to login and that's it!
You are ready to create SlideTalk videos.Please note that we will not post any news or update on your account in any of these services, neither we will collect any information from these services beside your email address, which we use to send you status information about the SlideTalk videos you are working on.
Q: How do I create a slidetalk?Once logged-in click on "Create" and follow the instruction on screen.
Watch this slidetalk to learn how to create and share a slidetalk video.
Q: Can I import a complete PowerPoint file?Yes, when you create a SlideTalk you can choose whether to add slides (pictures) one at the time, or add a complete PowerPoint file (ppt or pptx files). See the tutorial here above for more information.
Q: After importing a PowerPoint file, the fonts look different, what can I do?If you use specific non-standard fonts, you might see that these fonts are substituted by other fonts when the powerpoint is imported. Should you need to keep the exact layout in your PowerPoint file, then you should save your powerpoint file as graphic file (PNG or JPG). This would create a set of images (one for each slide) that can be imported into SlideTalk one by one, keeping the original layout intact.
Q: Is there any limitation on the size of text for each slide?You can have up to 1000 characters for each slide.
If you need a longer text on one image, you can import the same image twice and type the rest of the text on the second image.
However we recommend to have short text for each slide, to have a more dynamic result.
Q: I am not finished yet with my SlideTalk, how do I save my work?You don’t need to, the work is saved automatically. You can close the slidetalk page at any time, the next time that you login you will be ready to start from where you left.
Q: Can I edit a slidetalk after publishing on YouTube?No, after a slidetalk has been published you cannot change it. However you can clone a slidetalk to create a new version that can be edited and published.
To clone a slidetalk, select the slidetalk you want to clone from your home page, and click on the “Clone” button.
Q: How do I share a slidetalk on Facebook or on TwitterOnce the video is published on YouTube you can use the share function from the YouTube video page to share the video with friends, via email, Facebook, Twitter and other social medias.
Q: How do I delete a slidetalk video from YouTube?Please contact us at firstname.lastname@example.org if you want to delete a slidetalk video from YouTube.
Q: When I import a huge file (PowerPoint or image), the website seems stuckDepending on your internet connection, it may take long time to upload a very huge file. Please check the status bar of you browser to see the progress of your upload, as in the following picture:
Q: Which image formats do you recommend?We support all main image formats. SlideTalk does its best to make pictures of different size and proportions to look good in the slidetalk video, but it does help if you have pictures that are consistent.
Since YouTube uses a 16:9 image format, it is recommended that you also use 16:9 images, to avoid black frames around your videos.
Q: How many languages and voices are available?SlideTalk offers more than 20 languages and 70 voices. New voices are added regularly.
The current list of available voices is available in the Create page.
Q: Can I switch voice and/or language in the middle of the presentation?Yes. We have a special set of commands to control the text-to-speech.To switch voice you need to type @
For instance if you have chosen Ryan as your default voice and you type the following text:
"Hello my name is Ryan, @Heather and I am Heather. @Ryan Today we are to present..."
You will hear first Ryan speaking "Hello my name is Ryan", then Heather speaking "and I am Heather", and then Ryan once again saying "Today we are to present...".
You can use as many voices as you like and even change language within a sentence. As in the following example:
"@Ryan The cat is on the table. @Antonio El gato está sobre la mesa."
You will first hear Ryan pronouncing the sentence in English, and then Antonio pronouncing it in Spanish.
Q: How do I add silences in the narration?There are 3 types of silences that you can use in the narration:
- @breath -> add a silence of 0,5 sec
- @pause -> add a silence of 1 sec
- @silence -> add a silence of 3 sec
You can also specify pauses of any length by writing @p followed by the desired silence length in milliseconds, as in this example: "Did you really check @p2000 the keys?". A silence of 2 seconds (2000 msecs) will be inserted between "check" and "the keys".
Q: How do I change the reading speed?There are 5 settings for the reading speed:
- @slow -> quite slow reading (25% slower than default)
- @moderate -> slightly slower reading (10% slower than default)
- @normal -> set back all parameters to default (including reading speed)
- @fast -> slightly faster reading (10% faster than default)
- @faster -> quite fast reading (30% faster than default)
You can also adjust the reading speed as you wish by using @s followed by the speed expressed in percentage of default speed. For instance @s150 will set a reading speed 50% faster than default, while @s60 will set a reading speed 40% slower than default.
Q: Can I change the timbre of the voice?The timbre (or colour) of a voice can be changed by using a parameter which is also referred to as "vocal tract". It simulates different shapes for the vocal tract resulting in different timbres.
We have 2 presets:
- @lighter -> sets a lighter voice, corresponding to a voice 15% lighter than default
- @normal -> set back all parameters to default (including timbre)
- @darker -> sets a darker voice, corresponding to a voice 15% darker than default.
You can also adjust the timbre as you wish by using @v followed by the timbre expressed in percentage of default. Values below 100 give darker timbre, while values above 100 give lighter tones. For instance @v120 will set a timbre 20% lighter than default, while @s70 will set a timbre 30% darker than default.
We suggest that you play around with this parameter to gain confidence, by starting with the predefined values or values around 100. Excessive values of timbre may be used for comical effect but will complete distort the quality of the voice.