AI enables speech-to-text and text-to-speech generation in videos.

Technology is becoming increasingly present in everyday life. world population And currently, artificial intelligence already makes it possible to generate speech-to-text and text-to-speech in videos.

This option, also called automatic captioning, is very interesting, as it allows the inclusion of people through captions in videos.

Furthermore, this feature can streamline the process of creating content for digital platforms. See below for more information on this topic, as well as software options for using this tool.

What is speech-to-text/automatic captioning?

This practice, widely used to speed up the content creation process, is also called speech-to-text conversion.

It is done through the use of voice recognition software, which allows the translation of the language used in text and the creation of automatic subtitles.

Several programs and tools already offer this type of application, given the public's great need to streamline the creative process, as well as make content more accessible and easier for viewers to understand.

How does automatic captioning work?

As we saw earlier, text-to-speech or speech-to-text uses software that works by listening to the audio or speech and creating an editable transcript on the device.

This system is based on linguistic algorithms that classify the sound signals of words and transform them into characters, forming a text or a caption.

The first step in this creation is when the technology It captures the vibrations created when sounds come out of the mouth and converts them into a digital language.

After that, the software's digital converter analyzes the sound and sound waves, filtering them to distinguish the most relevant sounds.

The next step is dividing all these sounds into phonemes, which are the result of spoken words. In this part of creating automatic captions, the software executes a network, through a model that compares the words to known expressions.

After this entire process, the words are presented in a way that is appropriate according to the program, and are then available for the author to edit.

This entire process is done using software specifically designed for this type of work, and it's already possible to find several applications and programs that offer this type of service in an easy and efficient way.

What type of technology is used to create automatic captions?

The software that enables the creation of automatic captions can be of two types: speaker-dependent and speaker-independent.

Both can be used for this purpose; however, speaker-dependent software is more suitable for creating subtitles, while speaker-independent software is more commonly used for applications, with the aim of speeding up the user's search for pre-determined services.

Both software programs can already be found integrated into the manufacturing of electronic devices, such as smartphones and tablets.

However, computers do not usually come with this function built-in, requiring the installation of a program to perform the task.

Best apps for automatically adding subtitles to videos

As we saw earlier, there are several programs and applications available for free on the internet for those who want to create automatic caption in videos.

This type of tool is constantly being developed with the aim of improving the quality of content production, and the technology used to create it is being enhanced every day.

However, some tools may still only generate this type of service in a few languages, and it is necessary to review the generated text, as it is common to find some grammatical errors and discrepancies in the necessary punctuation.

However, it is also possible to find excellent options that create text-to-speech and speech-to-text in Portuguese with high quality when it comes to spelling and punctuation.

Below we list three options to help those who need this functionality quickly and effectively in their daily lives.

1. Filmora

 Filmora is a program free video editor which is available for both Windows and Mac computers, and also offers a mobile app. Android e IOS.

For those seeking professional video editing and automatic captioning, Filmora is one of the best options currently available.

To create automatic subtitles using the program, open the folder on your computer or smartphone and select the video you want to edit. Then just follow these steps:

1. After adding the video to the timeline, select the icon indicated by a small circle to open the speech-to-text option.

 2. Once that's done, a new tab will appear, and you should select your desired language and clip. Confirm your selection by clicking "OK". 

3. Wait until the process is complete. You can view the progress on the displayed page. 

4. Close the page by clicking the “x”.

Upon returning to the program's home page, you will be able to view the caption just above your video.

The text will appear in white and may not be visible; however, by double-clicking on the caption, you can access the editing page and change the text color.

2.VEED

For music, VEED is a simple and easy-to-use online automatic captioning tool and an excellent option.

The new software released by the program's developers is capable of capturing the audio and sounds from your video, generating automatic subtitles.

Content creators don't need to create an account within the program to use the tool, and in addition, they can choose from several languages ​​for generating the text.

After selecting the video you want to edit, simply select the "Subtitles" option and then "Automatic Subtitles".

At this stage you can choose your desired language and begin the process, which takes an average of 1 minute to complete, depending on the size of your video.

Although VEED offers a free version to users, it only allows uploads of videos up to 50MB; a Pro subscription is required to access unlimited videos.

3.Kapwing

One of the most interesting tools Kapwing offers for creating automatic captions is the ability to upload a video from your library or simply paste the video URL to begin editing.

In addition, the program includes video examples that users can use to test the available tools.

After selecting the video, simply click "Generate" for the program to automatically start generating the subtitles, based on the author's words.

Despite its simple use and highly intuitive interface, making it easier for those who create content for social media, Kapwing's automatic caption creation software is still in Beta, meaning it's under testing. Therefore, the texts generated by the program may contain errors, so attention must be paid to avoid grammatical and punctuation mistakes.

Tips for converting voice to text

For those who work with typing or develop various content for social media daily, voice-to-text conversion can be a great ally.

And thanks to artificial intelligence, which is constantly being improved, this is already a reality in the daily lives of those who need to work with electronic devices and the internet.

To successfully develop content with satisfactory subtitles, some tips are important.

The first step is choosing a suitable program. As we saw earlier, there are several free options available today, but when it comes to quality and accuracy in creating subtitles, it's unanimously agreed among technology experts that... Filmora It's the best program, not only for this type of function, but also for other purposes, such as complete video editing and adaptation to the parameters of major digital platforms, such as Instagram, Facebook, and YouTube, for example.

Another important step in achieving perfection in creating automatic captions and converting text to speech, or speech to text, is to perfect diction. After all, no matter how advanced the software is, it still needs to identify the vibrations and phonemes of the spoken words.

How can one specialize in this type of technology?

Knowledge is always indispensable, and seeking to improve your skills in the world of technology is never a waste of time, especially today with videos and streaming of movies and series becoming increasingly popular. Who knows, a great professional might be born within you.

However, if you want to learn more quickly and familiarize yourself with this type of program, you can follow tutorials and step-by-step guides where the use and development of the work are explained in a fluid and simple way, making it easier for the user to understand.

Filmora, for example, offers this type of content for free to its users.

After downloading and installing the program, simply access the ideas menu to view various tutorials and intros to improve your skills in the field.

Artificial Intelligence is changing the world, and therefore it is necessary for us to keep up with it, taking advantage of the benefits it can offer.