JavaScript has seven primitive data types, with String being one of them. In JavaScript, a string represents a sequence of characters and can be enclosed in either single (') or double (") quotes.

Note that strings are immutable, which means once they are created, they cannot be changed. The variable can still be reassigned another value.

Change your "Hello" string to use single quotes.

let cities = ["London", "New York", "Mumbai"]; console.log(cities); cities[cities.length - 1] = "Mexico City"; console.log(cities);

let rows = ["Naomi", "Quincy", "CamperChan"]; rows.push("freeCodeCamp"); let popped=rows.pop(); console.log(popped); console.log(rows);

let pushed=rows.push(); console.log(pushed);

i += 1 i = i + 1 i++

ffmpeg -i video.mp4 -i subtitles.vtt -c:v copy -c:a copy -c:s movtext outputwith_subs.mp4

todo to get m3u8 you need to open network taab before video plays then use ytdlp and ffmpeg to compine the vtt and mp4 file

An M3U8 file is a UTF-8 encoded playlist file, commonly used for HTTP Live Streaming (HLS), that contains a list of URLs pointing to media file segments, enabling smooth and adaptive streaming of video and audio.

XMLHttpRequest (XHR) is a JavaScript API that allows web applications to make HTTP requests to servers, enabling the exchange of data without reloading the entire page

MPEG Transport Stream (.ts file): It's a container format for storing audio, video, and other data. It's commonly used for streaming video and audio, especially over unreliable networks like broadcast channels or the internet. It's designed to handle errors during transmission and maintain quality. It's often used in DVD and Blu-ray discs, but also for streamed or broadcast content. It uses MPEG-2 video compression.

RT (SubRip) and VTT (WebVTT) are both subtitle formats, but VTT offers more advanced features like text styling, positioning, and metadata support. SRT is simpler, widely supported, and suitable for basic subtitles, while VTT is more versatile for web-based content and applications needing enhanced formatting. Here's a more detailed comparison: SRT (SubRip): Simplicity: SRT is a plain text format, making it easy to create and edit. Wide Support: SRT is widely compatible with various media players and platforms, including YouTube and VLC. Basic Features: Primarily supports plain text captions without advanced formatting options. Use Cases: Suitable for basic subtitles on DVDs, simple video editing, or situations where universal compatibility is crucial. VTT (WebVTT): Advanced Features: VTT offers features like text styling (bold, italics), positioning on the screen, and metadata support. Web Focus: VTT is designed for web-based HTML5 video players. More Versatile: VTT is more versatile for complex videos and multimedia presentations, especially those with unique styling needs. Use Cases: Ideal for social media, marketing communications, and web-based content requiring enhanced formatting and metadata.