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Solution for missing album art

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stevew09

Ready to race!
Location
Surrey
Album art..... I also have been getting seemingly sporadic album art display on my Discover media unit.

Jpg files can be compressed using two different algorithms, baseline and progressive. The difference is progressive allows the jpeg to be drawn in lower quality first, then as more data is received the jpg becomes more detailed. This type is used mainly on the web, so when using a slow internet connection it initially allows a very poor quality image to be displayed. A baseline image will not be displayed at all until all the data for the image is received.

It appears the Discover media unit does not support Progressive encoded .jpg files and so it ends up not displaying the album art.

So I, like probably many others, when getting my album art from the internet, unknowingly end up with a mixture of progressive and baseline encoded images. This manifests itself with the sporadic displaying of album art depending on album.

When I converted my progressive jpg's to baseline jpg's the album art is now consistently displayed. It will also display images up to a resolution of 500 x 500.

Hope this help people, it took me a few months of investigation to figure this out.

Steve
 
redbutcher

redbutcher

Ready to race!
Location
Northants
Nice tip - thanks Steve. Need to sort out my album artwork as some displays and some doesn't. I think the composition unit only supports 400 x 400 though.
 
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stevew09

Ready to race!
Location
Surrey
redbutcher said:
Nice tip - thanks Steve. Need to sort out my album artwork as some displays and some doesn't. I think the composition unit only supports 400 x 400 though.
Click to expand...

Glad to help.

I used a free windows paint program called GIMP to convert the images I had.

When I experimented on my unit anything over 500 x 500 would not display. Maybe worth checking if the composition is the same (I suspect it may be but cannot test this).
 
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CesarDRK

New member
Location
Brazil
When you talk about album art you mean .jpeg files embedded in the MP3 file off the SD card? Or separate .jpeg files in folders off the SD card, or even album art from an iPod or iPhone?

Thanks.
 
redbutcher

redbutcher

Ready to race!
Location
Northants
CesarDRK said:
When you talk about album art you mean .jpeg files embedded in the MP3 file off the SD card? Or separate .jpeg files in folders off the SD card, or even album art from an iPod or iPhone?

Thanks.
Click to expand...

Pics embedded in the mp3 files being played back from the SD card. The composition unit only supports album art embedded in the mp3 files.
 
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stevew09

Ready to race!
Location
Surrey
The discover media until supports embedded jpg or an artwork jpg in the folder.

If you put a file in the folder the tracks need to have no embedded artwork (as far as I can tell)
 
Talk-torque

Talk-torque

Ready to race!
Location
Sunny Scarborough, North Yorkshire, UK
I've got 500x500 displaying reliably on my Discover system.

I put the SD card together, by dragging and dropping folders, grouped under artist, as iTunes does it, then I went through the whole lot, album by album, replacing the artwork using Mp3tag (shareware of internet). I used the closest available to 500x500, making sure that I didn't save any other artwork which may have been attached (the software gives you the option).
 
redbutcher

redbutcher

Ready to race!
Location
Northants
stevew09 said:
The discover media until supports embedded jpg or an artwork jpg in the folder.

If you put a file in the folder the tracks need to have no embedded artwork (as far as I can tell)
Click to expand...

That's interesting as much easier to go with the artwork.jpg option - wonder if the composition system supports the same as I'd prefer that option. Right, time to try it out...
 
redbutcher

redbutcher

Ready to race!
Location
Northants
Have a gold star Steve - artwork.jpg works perfectly if placed in the folder :D.
 
M

Mark V1

Go Kart Champion
Location
Herts, UK
Think Discover Pro has a built in artwork database as mine displays album artwork without there being any on my memory stick! Gracenotes or something like IIRC....
 
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stevew09

Ready to race!
Location
Surrey
Over the weekend I finished converted all my progressive jpgs to baseline.

As I keep all my music in flac format (master digital copy) I then used a flac windows command line tool to replace the embedded artwork on all the effected albums. Once I had done this I converted all my flac albums to wma and put them back on my freshly formatted SD card.

Album art is now showing for all albums :D
 
Wolksvagen

Wolksvagen

Banned
Location
New Zealand
Mark V said:
Think Discover Pro has a built in artwork database as mine displays album artwork without there being any on my memory stick! Gracenotes or something like IIRC....
Click to expand...


That's good to hear, I'm having a few issues getting all my artwork to display on the current Discover Nav.

Artwork is limited to 500x500 @ 100kb or less, what is the limit on the Discover Pro system?

I've spec'ed the pro system on my pending next Mk7 (may/june(ish))
 
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stevew09

Ready to race!
Location
Surrey
Wolksvagen said:
That's good to hear, I'm having a few issues getting all my artwork to display on the current Discover Nav.

Artwork is limited to 500x500 @ 100kb or less, what is the limit on the Discover Pro system?

I've spec'ed the pro system on my pending next Mk7 (may/june(ish))
Click to expand...

Not a direct answer to your question, however on the Discover Media (not the pro) the limit is more than 100kb. I used a 500 x 500 image that was 110kb and it was displayed, as soon as I went over 500 x 500 nothing.
 
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