VIDEO - s50600822/Notes GitHub Wiki

Codec	Pros	Cons
H.264	- High video quality at lower bitrates - Widely supported by hardware and software - Good for streaming and video conferencing	- Can be complex to encode and decode - Not as efficient as newer codecs
H.265 (HEVC)	- Higher compression efficiency than H.264 - Good for high-resolution video - Becoming more widely supported by hardware and software	- Can be more complex to encode and decode - May require more processing power than H.264
VP9	- Higher compression efficiency than H.264 - Good for high-resolution video - Royalty-free - Good for streaming	- Not as widely supported by hardware and software as H.264 - Can be more complex to encode and decode
AV1	- Higher compression efficiency than H.264 - Royalty-free - Good for high-resolution video - Good for streaming	- Not as widely supported by hardware and software as H.264 - Can be more complex to encode and decode - May require more processing power than other codecs
MPEG-2	- Widely supported by hardware and software - Good for broadcast and DVD video	- Lower compression efficiency than newer codecs - Larger file sizes than newer codecs
MPEG-4	- Widely supported by hardware and software - Good for streaming video and mobile devices	- Lower compression efficiency than newer codecs - Larger file sizes than newer codecs

ffmpeg src

git clone https://git.ffmpeg.org/ffmpeg.git

To H.265

ffmpeg -i input.mp4 -c:v libx265 -crf 28 -preset medium -c:a copy output.mp4

https://blog.wirelessmoves.com/2020/10/ffmpeg-and-those-16-cpu-cores-for-video-encoding.html

https://mediaarea.net/en/MediaInfo/Download

use std::process::Command;

fn check_video_codec(file_path: &str) {
    let ffprobe_path = "Z:\\ffmpeg\\bin\\ffprobe.exe"; // Replace with the actual path to ffprobe.exe

    let command = format!(
        "{} -v error -select_streams v:0 -show_entries stream=codec_name -of default=nokey=1:noprint_wrappers=1 {}",
        ffprobe_path, file_path
    );
    println!("command: {}", command);
    let output = Command::new("sh").arg("-c").arg(&command).output();

    match output {
        Ok(output) => {
            if output.status.success() {
                let codec = String::from_utf8_lossy(&output.stdout).trim().to_string();
                println!("Codec: {}", codec);
            } else {
                let error_message = String::from_utf8_lossy(&output.stderr).trim().to_string();
                eprintln!("Error executing command: {}", error_message);
            }
        }
        Err(error) => {
            eprintln!("Error executing command: {}", error);
        }
    }
}

fn main() {
    let file_path = "D:\\test.mp4";
    check_video_codec(file_path);
}

GOP-Size_report_11_16.pdf

https://aws.amazon.com/blogs/media/aws-elemental-live-encoder-4k-uhd-advancements-and-workflows/

https://aaron.cc/ffmpeg-hevc-apple-devices/

https://streaminglearningcenter.com/articles/the-impact-of-gop-size-on-video-quality.html