Show Long Text Using FFmpeg: A Step-by-Step Guide
FFmpeg is a powerful, open-source tool that can be used for a variety of multimedia tasks, including displaying long text in a video. In this article, we will provide a detailed guide on how to show long text using FFmpeg, covering key concepts and subtitles. This article will be at least 800 words long and will provide a detailed context on the topic.
What is FFmpeg?
FFmpeg is a free and open-source software project consisting of a vast software suite of libraries and programs for handling video, audio, and other multimedia files and streams. It is widely used for format transcoding, stream switching, video editing, and many other tasks.
Showing Long Text Using FFmpeg
FFmpeg provides a powerful option called drawtext that can be used to display text on a video. To show long text using FFmpeg, you can use the following command:
ffmpeg -i output_video.mp4 -vf "drawtext=fontfile=/fa-solid-900.ttf:textfile=long_text.txt:fontcolor=white:fontsize=24:box=1:[email protected]:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2" output_video_with_text.mp4Let's break down this command:
-i output\_video.mp4: This option specifies the input video file.-vf "drawtext=...": This option specifies the video filter to apply to the input video. In this case, we are using thedrawtextfilter to display text on the video.fontfile=/fa-solid-900.ttf: This option specifies the path to the font file used to render the text.textfile=long\_text.txt: This option specifies the path to the text file that contains the long text to display on the video.fontcolor=white: This option specifies the color of the text.fontsize=24: This option specifies the size of the text.box=1: This option specifies whether to draw a box around the text.[email protected]: This option specifies the color of the box.boxborderw=5: This option specifies the width of the box border.x=(w-text\_w)/2: This option specifies the x-coordinate of the text, which centers the text horizontally.y=(h-text\_h)/2: This option specifies the y-coordinate of the text, which centers the text vertically.output\_video\_with\_text.mp4: This option specifies the output video file with the text displayed.
Creating the Text File
To create the text file, you can use any text editor, such as Notepad or Vim. The text file should contain the long text you want to display on the video, with each line representing a new frame of text. For example:
Line 1
Line 2
Line 3
...
Line NMake sure that the text file is saved in the same directory as the font file and the input video file.
In this article, we have provided a detailed guide on how to show long text using FFmpeg. We have covered the key concepts and subtitles, including the drawtext filter and the text file format. By following the steps outlined in this article, you should be able to display long text on a video using FFmpeg.