Use network MTU for faster download

[voyeg3r]

Maximum transfer unit lets start downloading in various parts of the same file. Software than use this feature 'aria2c'

[rg3]

If you find out a portable way of getting that value in Python, a patch and testing results would be welcome, but take into account the transfer speed is throttled by YouTube server-side, so I wouldn't expect any miracle at all.

[phihag]

Cursory investigation shows the MTU is already being used by the OS anyway, despite youtube-dl requesting 1024 byte chunks, so any setting that aria2 could set is either not applicable on my system or plain snake oil. Feel free to reopen this issue (or create a new one) with

• A description how exactly the network traffic would be improved (for example, pcap dumps of youtube-dl and aria2c downloading the same file)
• Optionally, a suggestion which Python functions youtube-dl should call or what should be changed.