Because HLS video chunks are small (usually 2-10 seconds each), default aria2c settings will bottleneck your download speed. Use these exact flags to maximize your bandwidth: -j 16 : Allows up to 16 concurrent file downloads. -x 16 : Uses 16 connections per server.
You cannot simply point aria2c at an M3U8 link and expect a single MP4 file. You need a workflow: The download engine.
-i ts_links.txt : Tells aria2c to read the list of target URLs from your input text file. aria2c m3u8
To help refine this process for your specific video project, let me know:
Use curl or wget to save the playlist file. Because HLS video chunks are small (usually 2-10
Are the video segments inside your M3U8 file (starting with http) or relative local paths ?
: This command will take filelist.txt and merge all the segments into a single output.mp4 without re-encoding, preserving quality. You cannot simply point aria2c at an M3U8
Introduction Aria2 is a lightweight, multi-protocol, command-line download utility valued for speed, scripting ease, and flexible input handling. M3U8 is the UTF-8 variant of the M3U playlist format most commonly used to describe HTTP Live Streaming (HLS) media: it lists segments (usually short .ts or .aac files), variants (different bitrates/resolutions), and metadata that media players use to stream adaptive content. Combining aria2c with M3U8 workflows gives a fast, reproducible way to fetch HLS content for offline use, automated processing, or archival.
This is the most reliable method. Let aria2c fetch the .ts chunks, then let ffmpeg merge them.
Example steps (conceptual):
yt-dlp --external-downloader aria2c --external-downloader-args "-j 16 -x 16 -s 16" "URL_TO_M3U8" : Parses the M3U8 and handles decryption. : Opens 16 simultaneous connections ( ) to grab segments in parallel. The Manual "Survival" Method