Python使用ffmpeg实现mp4与m3u8相互转换

ffmpeg -i input.mp4 -c:v libx264 -c:a aac -strict -2 -f hls -hls_list_size 2 -hls_time 15 output.m3u8

# 1.视频整体转码ts
ffmpeg -y -i music.mp4  -vcodec copy -acodec copy -vbsf h264_mp4toannexb out\music.ts
# 2. ts 文件切片
ffmpeg -i music.ts -c copy -map 0 -f segment -segment_list out\music.m3u8 -segment_time 10 out\15s_%3d.ts

ffmpeg -i test.mp4 -c:v libx264 -c:a aac -strict -2 -f hls -hls_time 2 index.m3u8

ffmpeg -i test.mp4 -force_key_frames "expr:gte(t,n_forced*2)" -strict -2 -c:a aac -c:v libx264 -hls_time 2 -f hls index.m3u8

ffmpeg -i “https://xushanxiang.com/demo/ffmpeg/hls265/output.m3u8” -vcodec copy -acodec copy -absf aac_adtstoasc output.mp4

ffmpeg -i new.ts -c copy -map 0:v -map 0:a output.mp4

ffmpeg -i new.ts -c copy -map 0:v -map 0:a -bsf:a aac_adtstoasc output.mp4

ffmpeg -y -i new.ts -c:v libx264 -c:a copy -bsf:a aac_adtstoasc output.mp4

$url = 'https://******.m3u8?Expires=1585381145&OSSAccessKeyId=******&Signature=******';
 
$ts_content = file_get_contents($url);
$ts_content = explode(',', $ts_content);
$ts_file = array();
 
foreach ($ts_content as $key => $value) {
    if($key == 0) continue;
    $value = trim($value);
    $ts_file[] = substr($value, 0, strpos($value, '.ts') + 3);
}
 
$url_prefix = substr($url, 0, strpos($url, '.m3u8'));
$url_prefix = substr($url, 0, strrpos($url, '/') + 1);
$file_content = '';
 
foreach ($ts_file as $key => $value) {
    $file_content .= file_get_contents($url_prefix . $value);
}
 
file_put_contents('tmp_out.ts', $file_content);
 
// FFMPEG_PATH 是你自己解压ffmpeg的bin路径，例如我的是F:/ffmpeg/bin/
exec(FFMPEG_PATH . "ffmpeg -i tmp_out.ts tmp_out.mp4");

import os
import sys
import time
from Crypto.Cipher import AES
 
def fileList(findex):
    rpath = os.path.dirname(os.path.realpath(findex))
    name = rpath.split("\\")[-1]
    fi = open(findex, 'r')
    flag = False
    IV = None
    tl = []
    for line in fi.readlines():
        if line.startswith("#EXT-X-KEY"):
            # 如果存在 IV 则提取；
            if line.split(",")[-1].startswith("IV="):
                IV = line.split(",")[-1][5:]
                IV = bytes.fromhex(IV)
        if line.startswith("#EXTINF"):
            flag = not flag
            continue
        if flag:
            tmp = line.strip().split("/")[-1]
            tmp = os.path.join(rpath, tmp)
            tl.append(tmp)
            flag = not flag
    fi.close()
    fk = open(os.path.join(rpath, "key"), 'rb')
    key = fk.read()
    fk.close()
    return name, tl, key, IV
 
def aes_decode(data, key, IV):
    # 如果没有指定 IV 值，则直接使用 key 值
    if not IV:
        IV = key
    cryptor = AES.new(key, AES.MODE_CBC, IV)
    plain_text = cryptor.decrypt(data)
    return plain_text
 
def main():
    fp = os.listdir()
    used = [s[:-4] for s in os.listdir("./result/")]
    for ind in fp:
        if not ind.isdigit():
            continue
        if ind in used:
            continue
        try: 
            name, fl, key, IV = fileList(os.path.join(ind, "index.m3u8"))
        except:
            print("-"*30)
            print("[-] Errot! file: ", ind)
            print("-"*30)
            continue
        print("[*] Begin process file: ", name)
        start = time.time()
        f = open(os.path.join("./result/", name+".mp4"), 'ab')
        for i in fl:
            with open(i, 'rb') as inf:
                data = inf.read()
                f.write(aes_decode(data, key, IV))
        f.close()
        print("[+] Sucessfully! Cost time: ", time.time()-start)
 
main()