Aria2c M3u8 May 2026

Assume this m3u8 URL: https://cdn.example/live/stream.m3u8

# 1. Download all segments with aria2c, max speed
aria2c --check-certificate=false \
       --max-connection-per-server=16 \
       --split=16 \
       --min-split-size=1M \
       --console-log-level=error \
       --summary-interval=0 \
       -i <(curl -s "https://cdn.example/live/stream.m3u8" | grep -E "segment_[0-9]+\.ts" | sed 's|^|https://cdn.example/live/|') \
       -d ./live_vid
brew install aria2

Inspect network traffic (Browser DevTools → Network → Filter by .m3u8) while playing the video. Copy the master or media playlist URL.
By default, aria2c might name the output file based on the URL, which could result in a file named stream.m3u8.mp4 or just stream.m3u8. You can force a specific filename using the -o flag. aria2c m3u8
aria2c -o "my_video.mp4" "http://example.com/video/stream.m3u8"

Downloading M3U8 streams is rarely as simple as the basic syntax above. You will often encounter "403 Forbidden" errors, encryption, or metadata issues. Here are the critical parameters you need to know.
The most fundamental command to download an M3U8 stream is straightforward: Assume this m3u8 URL:  https://cdn
aria2c "http://example.com/video/stream.m3u8"

If the M3U8 file is a standard HLS master playlist containing relative paths, aria2c will download the playlist, parse the segment URLs, download all segments into a temporary folder, and merge them into a single output file.
If you’ve ever tried to download a video stream from the web, you’ve likely run into the M3U8 format. It’s a playlist file (usually in UTF-8) that tells a video player where to find small chunks of video—typically .ts files. Inspect network traffic (Browser DevTools → Network →
Most people reach for ffmpeg to handle this. But ffmpeg is single-threaded for downloading. Enter aria2c: a command-line utility that splits downloads across multiple connections.
Today, we’re combining the two: aria2c + M3U8.
aria2 is a lightweight, command-line download utility. Unlike standard tools, it supports:

For m3u8 streams, aria2c shines because it can download dozens of .ts fragments simultaneously, saturating your bandwidth.