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45 lines
2.1 KiB
45 lines
2.1 KiB
2 years ago
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The [WebTorrent](https://webtorrent.io) project provides a way for websites to
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share the bandwidth load with the users viewing content. It works on almost any
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content, but the first thing I I implemented is for Video.
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# Getting Media
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This demo is found in `admin/bando/demos/WTVideos.svelte` and it is coded to expect a sample image, video and torrent file at:
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* `/images/sample_video.mp4`
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* `/images/sample_image.jpg`
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* `/images/sample_video.mp4.torrent`
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If you want it to work locally, grab a video and an image and place them there, then use `mktorrent` as described next.
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# Making the .torrent
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This will most likely *only* work if you have your server on `127.0.0.1` since the torrent file is configured for that. Also, the default `npm run dev` will run the simple tracker implementation found in `services/tracker.js`. If you want to generate the torrents again then run:
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```shell
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mktorrent -v -w http://127.0.0.1:5001/images/sample_video.mp4 \
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-a ws://127.0.0.1:9001/ \
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-o static/images/sample_video.mp4.torrent \
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-p -l 18 static/images/sample_video.mp4
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cp -r static/images public/images
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```
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It uses the [mktorrent](https://github.com/pobrn/mktorrent) to generate the torrent since it is faster. Be careful of the WebTorrent specific options I use in the `mktorrent` that are needed for WebTorrent to understand the torrent:
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* `-p` -- Sets the private flag. This isn't needed for WebTorrent but is
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needed if you want to add extra protections to people accessing your content
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only after they log in.
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* `-l 18` -- Sets the piece length to 18, which is what WebTorrent seems to need.
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* `-w 127.0.0.1` -- Sets an initial web URL to use as a source. You
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should remove this if you want them to only go through the tracker and other
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users.
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* `-a ws://127.0.0.1:9001/` -- Tells WebTorrent where the tracker is located.
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# Bugs
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1. It looks like WebTorrent has a problem getting the last chunk in some situations and I'm quite sure why. If you have an idea let me know.
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# Download Link
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If you want to let people download the video then add the `download={ true }` property.
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