Enhancing Audio & Adding Subtitles to MP4

I am seeking a skilled freelancer, well-versed in audio enhancement and subtitles, to help improve the quality of speech and accessibility of an extensive English mp4 video. Goals: - Improve the audio quality of the video. - Make the speech more comprehensible. - Create subtitles, making the video user-friendly for hearing-impaired individuals. Project specifics: - The project involves an mp4 video longer than 10 minutes. - The speech in the video is in English and needs enhancement and subtitles. Ideal candidate: - Proficient in audio enhancement and adding subtitles. - Prior experience with long video projects. - Fluent in English.