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I'm looking for an app that makes browsing pictures on my home DLNA server really easy and nice. By nice I mean that pictures should load fast (eg preloading), should be able to swipe through them etc.

I'm finding it hard because if you search Google play store it turns up lots of apps designed to stream FROM an android device TO another device, but what I want to do is see my pictures on my android devices.

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    Take a look at my list of DLNA apps – and a closer look at BubbleUPnP. It's a while ago that I've used it, so I'm not sure it meets all your criteria. – Izzy Oct 22 '17 at 9:50
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Not a recommendation for an Android App but a way of getting more or less what you are looking for is to do a little work on your DLNA servers content.

  • Don't store your photos directly in the shared area of the server, (if it is a Windows server this will be the "My Pictures" library, other servers will use different locations.
  • In the shared area store processed versions of your pictures that are:
    • reduced in resolution to the maximum resolution of the device(s) that you wish to access them on or even a lower resolution that you are happy with - this will reduce the bandwidth needed to download them.
    • Converted to a supported compressed format such as jpeg, possibly with a little loss of quality
    • Converted to a progressive version of the image, (these format will show a rough version of the image very quickly and then gain detail as the download progresses).

On most platforms you can use ImageMagick to do all of the above options with a command such as:

convert original_file_path -resize widthxheight^ -interlace Line -quality 80 new_file_path

Where:

  • original_file_path is the original non-shared file path complete with the extension.
  • width & height are your respective maximums separated by the letter x (^ preserves the aspect ratio).
  • The number after -quality is one that you are happy with after some trial and error
  • new_file_path is the new file name including the path to the shared library and the .jpg extension.

If you also have movies to serve you can use FFMPEG to down sample to a suitable resolution & maximise compression.

Both ImageMagick & FFMPEG are:

  1. Free, gratis & open source
  2. Available for most platforms that can act as a server

Note that some DLNA servers, such as plex (subscription required) & emby, have the capability to down-sample, make progressive or stream content dynamically in near real-time.

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  • Thanks, yeah I'm about to give up and write a website that does the job which would include automatic thumbnail generation etc. – artfulrobot Oct 22 '17 at 9:53
  • ImageMagick can do thumbnail creation and html map creation so may come in useful. – Steve Barnes Oct 22 '17 at 12:11

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