Selective downloading

From VuzeWiki
Jump to: navigation, search

You can decide to download only specific files inside a torrent. You can make the selection either when adding the torrent or later during the download:

Deselecting files when loading the torrent (Vuze 5.1.0.0+)[edit]

The torrent options dialog was reworked for release 5.1.0.0. Separate option screens are now shown per-download to reduce the complexity of the screen, which many users reported as confusing.

To select/deselect files for download you are now presented with the following view:

OpenTorrentFiles.png

There has been a bit of subsequent confusion regarding the ability to select/deselect-all. Previously there were separate buttons to do this. Now this is achieved using keyboard shortcuts and right-click menus:

There are two things at work here

  1. which rows (i.e. files) are selected in the table
  2. which rows have the check box ticked/unticked

(1) is set by the usual operations: click one entry + shift+click another entry to select all between as well ctrl+click entries one at a time to add/remove from the set of selected entries ctrl+a to select all entries along with the right-click menu options to select all, select all in a folder etc

(2) is set by using the space bar - the space bar affects the tick-state of all entries selected in (1) Space-bar is pretty standard for selecting check boxes - check

http://en.wikipedia.org/wiki/Checkbox - "Inverting the state of a checkbox is done by clicking the mouse on the box, or the caption, or by using a keyboard shortcut, such as the space bar."

Deselecting files when loading the torrent (Pre-Vuze 5.1.0.0)[edit]

  • You can force Vuze to always show the file selection dialog when adding torrents by disabling the option "Automatically download to the default directory (no prompt)" from the Options -> Files options.
  • If you've set Vuze to open torrents silently to the default download directory without the dialog, you can still occasionally use the selection dialog:
  1. Go to Files -> Open -> Open Torrent or use Ctrl+O to open the torrent through the Open Torrent Dialog
  2. Unselect the files you don't want to download in the lower table by removing the checkmark from the checkbox next to filenames.
SelectFilesWhenAddingTorrent.png


Deselecting files after the torrent has been loaded[edit]

  1. Rightclick on the torrent -> Show details or doubleclick on the torrent in order to open the torrent details screens.
  2. Go to the Files Tab, which shows the details for the files in the torrent. (See the image at the bottom)
  3. Select all files you don't want to download
  4. Select Rightclick -> Set Priority -> Delete (or Do Not Download)
    • Note: If you select Delete all partial data downloaded of the selected files will be deleted. If you select Do not download, the partially loaded data files are left on the disk.

Re-selecting files after the torrent has been loaded[edit]

If you later want to download a file you have previously unselected:

  1. Rightclick on the torrent -> Show details or doubleclick on the torrent in order to open the torrent details screens.
  2. Go to the Files Tab, which shows the details for the files in the torrent. (See the image at the bottom)
  3. Select all files you now want to download
  4. Select Rightclick -> Set Priority -> Normal or High (or Numeric then enter a number)


Vuze45AdjustFilePriority.png

Location and name of deselected partial files[edit]

Since 4.9.0.0 there is an option to place the partial files required to support the downloading of deselected files in a subfolder of the folder they would normally appear in (default is .dnd_az!)

There is an option to add a suffix to incomplete files that can also help distinguish incomplete files (default is .az!)

See Tools->Options->Files

Note: about file creation with Delete and DND[edit]

The files marked with Delete will not be allocated to your hard disk, while those with DND will be allocated and created. (This may confuse you, as the file directory in Explorer/Finder will show you the full size of the DND file.) And even the "Delete" files will be allocated to the extent that their content is part of a piece, which will be downloaded due to other files.

The whole bittorrent logic is based on dividing the data files to even-sized pieces, typically 256 kB, 512kB, 1MB or 2 MB. And then the pieces are further divided into 16 kB blocks. Clients request/send the blocks, but maintain download correctness assessment (checksums) based on full pieces. If you look Files details tab of torrent's details, you will notice that for each file there is listed the number of first piece and the number of pieces.

As file lengths do not match piece boundaries, it is very typical that a piece will contain parts of several files (at least 2 files, but e.g. a 2 MB piece might easily contain 5-10 JPG images). Even if you mark some of those files DND or delete, but the piece contains contents of files you want, then the whole piece will be downloaded and written to disk. Thus you may end up with at least parts of files you did not want.

Vuze43TorrentDetailsFiles.png

Read the Azureus FAQ