When making a video, how could he modify the letters and dubbing of the film clips, and how could he add his own voice in?

When making a video, you can modify the letters and dubbing of the movie clips and add your own voice. You can refer to the following steps: 1. Alter the letters: Use video editing software such as Adobe Premiere Pro, Final Cut Pro, iMovie, etc. to modify the letters in the captured movie clips, such as changing the color, size, font, emoji, etc. 2. Add dubbing: Use the audio editing function in the video editing software to add dubbing to the movie clip. You can use a variety of audio editing software such as Adobe Audition, Audacity, etc. to add audio files to the software to adjust the volume, balance, frequency, and other parameters to match the dubbing with the movie clip. 3. Add background music: Add background music to the video editing software to add atmosphere and color to the movie clip. You can use a variety of music editing software such as Logic Pro, Ableton Live, vl Studio, etc. to add music files to the software to adjust the volume, balance, rhythm and other parameters to match the music and movie clips better. 4. Add Subtitles: Use the Subtitle Editor function in the video editing software to add subtitles to the movie clip. Subtitle editing software such as Sublime Text, VS Code, and the Chrome-based extension could be used to add the title file to the software and adjust the font, color, size, and alignment to match the title with the movie clip. 5 Add your own voice: Use the audio editing function in the video editing software to add the audio file to the software to adjust the volume, balance, frequency and other parameters to match the sound with the movie clip. Then, you can add the sound to the movie clip by mixing the audio file with the audio file in the movie clip. The above are some basic steps. The specific operation needs to be carried out according to the specific video editing software. At the same time, it is recommended to back up the original video file before modifying or adding dubbing, background music, subtitles, sounds, etc. to avoid accidents.