Hello guys,
I'm trying to find this information in Google and I'm not getting any luck. What I want to do is to download only a specific size for a image file just to get its Exif metadata, using HTTPs Range Retrieval Requests (http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.2).
Is there a safe size to assume that will give me access to the Exif tags? Something like: "download the first 700 kbytes".
If you pipe the file to ExifTool directly with the -fast option, then ExifTool will only download what is necessary.
The EXIF may be up to 64kB, but there may be a JFIF segment before it (which may contain a thumbnail), and XMP segments after it (which may be 100's of kB for some images).
- Phil
Thank you Phil. Sounds awesome, I'll give it a try.