-x 16 & -s 16 : Allocates 16 connections per server to maximize bandwidth.
When you have multiple m3u8 URLs to download, create a text file ( urls.txt ) with one URL per line and use:
Get-ChildItem *.ts | Sort-Object [regex]::Replace($_.Name, '\d+', $args[0].Value.PadLeft(20, '0') ) | ForEach-Object "file '$($_.Name)'" | Out-File -FilePath concat.txt -Encoding utf8 ffmpeg -f concat -safe 0 -i concat.txt -c copy output.mp4 Use code with caution.
This is the most reliable method. Let aria2c fetch the .ts chunks, then let ffmpeg merge them. aria2c m3u8
It uses drastically less RAM and CPU compared to browser extensions or heavy GUI downloaders.
If speed isn't your only priority and you want a simple one-step process, use directly. It is the industry standard for M3U8 streams.
aria2c -i segments.txt -j 16 -x 16 -s 16 --auto-file-renaming=false -x 16 & -s 16 : Allocates 16
Then convert to MP4 with ffmpeg :
Many professional HLS streams encrypt their .ts segments using AES-128. The encryption key is usually provided in the .m3u8 file via a line like #EXT-X-KEY:METHOD=AES-128,URI="https://example.com/key.bin" . You cannot simply merge an encrypted .ts file directly. You must decrypt it first.
If you don't need parallel downloading for speed, the FFmpeg command is simpler because it handles the download and the merging in one step. ffmpeg -i "https://example.com" -c copy video.mp4 Use code with caution. Copied to clipboard Let aria2c fetch the
Don’t overwhelm your network:
This comprehensive guide will walk you through everything you need to know about using aria2c to download m3u8 video streams—from the basics to advanced techniques for handling encrypted content and complex configurations.
Create an instruction file telling FFmpeg the exact order of the downloaded chunks, then merge them without losing quality. Generate a file list: ls -1v *.ts | sed "s/^/file '/;s/$/'/" > concat_list.txt Use code with caution.