How to download in p2p networks or a bitrate magnet

Since such a dance has gone, then I will tell you about the new parameter magnet links.

br=192000 

In a magnet link, it looks like this.
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 magnet:?dn=pop_music.mp3...&br=192000 

This option allows you to combine the advantages of sequential and random selection of parts for download. Let's call this “a mixed way to select parts.” Thereby giving the possibility of "online" viewing / listening without sacrificing download speed.

You can calculate the bitrate as follows:

  br=[   ]*8 / [     ] 

It will be more than the bitrate of the audio file stream and more than the sum of the bitrates of the video file streams.

Recall what methods of loading there are and further what I suggest.

Test file bitrate: 2.6 Mb / s

Sequential download.

This way video and audio files are downloaded on the Internet for viewing online in Flash and HTML5 players. Files are located on servers that are able to provide speed of return for comfortable viewing to each user. In p2p networks, the source of the file is an ordinary user's computer that cannot provide the necessary speed for comfortable viewing.

Since during the sequential loading of the peers they will receive the same parts of the file, they will not be able to exchange them with each other for mutual speed increase.

Advantages:

1. You can watch / listen immediately.

Disadvantages:

1. Slow download speed.

Download in random order.

This is a survival strategy for p2p networks. Each peer requests different random parts of the file and then exchanges these parts with other peers which increases the speed. But since the parts are requested random, before the end of the download, the file is “ragged”. When playing such a file, the player will skip the unloaded parts or hang on the first break.

Advantages:

1. High speed

Disadvantages:

1. The file is played in chunks or the player hangs.

Mixed order

The file is loaded sequentially at a rate sufficient for “online” viewing.

In case of lack of speed for comfortable viewing of the file "online" (1), it is loaded randomly. If the download speed is sufficient, mixed mode is enabled (2)

Algorithm:

 1  (     )     ; 2   (          )    ;    ; 

Advantages:

1. High speed
2. Ability to view online without breaks

Disadvantages:

1. No (relative)

I tried this mode in my version of Shareaza client. Implemented it a little differently. In the second part, the playback marker is calculated (bit rate * time from the start of the download / 8). Available parts before the marker is loaded sequentially. If parts are available for loading only after the marker, then it is chosen randomly.

If you want to try online viewing in Shareaza

Download this version of Shareaza

Switch to windowed mode: in the View menu, first select Experienced Mode , and then - Window itself.

Set external player: in the Tools menu, click Settings . In the opened window, select the Player item. Expand the Select Manager list and click the item (Custom ...) . Next, look for the disk VLC or any other player.

Test Magnet 2.6 Mb / s: big_buck_bunny_720p_stereo.ogg

Test Magnet 6.2 Mb / s: tears_of_steel_1080p.webm

As the download starts, open the context menu (right-click) on the download and select the Open item.

The picture with the rabbit had to be photographed because the image in the player is not copied by the print screen.