resume partially downloaded files about coursera-dl HOT 6 OPEN

When using an external downloader, resuming is automatically done. I'm currently using aria2c instead of wget, as it is able to download many things in parallel. The patch that I have is not quite ready for prime time, though.

The proper solution would be to generalize the "outsourcing" of downloading material to a specialized download program.

from coursera-dl.

Please do submit the patch when ready!

from coursera-dl.

Are you interested in that? To simply resume downloads, you can add the -c option to wget.

Of course, with aria2c, you can get parallel downloads, which is a nice thing to use your bandwidth. How polished do you want the patch to use aria2c?

Anyway, it would be nice to have my previous pull request (issue #19) merged, so that we can focus on other improvements.

from coursera-dl.

Hi and Thx a lot for this script really nice one.
Would be really cool to have resume and parallel DL

from coursera-dl.

The issue I see is that we always remove partially downloaded files right now, so we'd need to add a flag to keep partials, and then for each downloader, we must add the option to resume.

A person using this option is at their own risk of using a downloading method which does not resume, and will thus skip over those partials. I would also think this would be slower in general because it'll need to try every file, unless additional logic is added to only retry files with a recent timestamp.

@rbrito any thoughts? I see you had some comments a long time ago but I'm assuming #19 was merged by now.

from coursera-dl.

I too noticed that partially downloaded files are not completed the next time the script is run. Even a zero length mp4 is skipped. Two solutions:

• Do a HEAD request against each asset (pref with pipelining)
• Keep partially downloaded files in a temp area and move them to the dest on completion

One of my biggest use cases for the downloader is to be able to watch the videos while on fragile and/or low bandwidth connections. In Malaysia and Nepal coursera was impossible for me without the downloader.

from coursera-dl.