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Add support to get tags from network files using -fast option #15

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fcy opened this Issue · 2 comments

2 participants

@fcy
fcy commented

ExifTool supports a very awesome option to load Exif data from slow network connections without the need to download a big photo file. I'd like to implement support for this option in MiniExifTool.

This is the CLI to use the -fast option:

wget -qO - http://farm6.staticflickr.com/5015/5458914734_8fd3f33278_o.jpg | exiftool -fast -

My idea if to create an initializer that receives the URL to the file and pipes it to exiftool -fast and then uses the already existing parse_output.

I've a few implementation questions:

  1. wget is not available in every SO. Any ideas on how to do the "download pipe" using pure Ruby classes? Any other command that is more widely available?
  2. I don't know the code base. Any tips on how to implement this?

What do you think?

@fcy
fcy commented

In case, there's no good way to replace wget or you think it should get in the project because it would increase complexity. I just found the following way of achieving the goal:

json_str = `wget -qO - http://farm6.staticflickr.com/5015/5458914734_8fd3f33278_o.jpg | exiftool -fast2 -`
exif = MiniExiftool.from_json(json_str)
exif.datetimeoriginal
# => 2011-02-15 08:27:51 -0200

It works for me. But I'd be interested in a discussion what other ways it could be done.

@janfri
Owner

Interesting idea. Didn't know the -fast option until now. ;-)

At the moment I don't see a simple solution that is universally applicable.

@janfri janfri added the idea label
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