ODR-PadEnc: Dynamic filename for slides?

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Felix Hofmann

Jun 6, 2022, 11:10:51 AM6/6/22
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Hi there,

I'm not sure if this topic has been covered before, my research turned up nothing, but my apologies if this is a duplicate post. I stumbled upon an interesting problem with ODR-PadEnc on some receivers:

Because the default filename for slides is always '0000.jpg', some receivers show the wrong slide after switching stations as the image appears to be cached in their memory.

For example:
A receiver is tuned to station 1 which transmits its logo using ODR-PadEnc. After a while, the listener switches to station 2 which also transmits its logo. However, because the filename of the slide for station one (0000.jpg) is identical to the slide filename of station two (also 0000.jpg), the receiver still shows the logo of station one even though it is tuned to station two. Powering off the receiver and turning it back on clears the memory and the correct logo is shown afterwards.

Is there any way to change the slide filename that is transmitted by maybe adding an ID in front of it to prevent this from happening?

Checking the log file confirms this assumption:

ODR-PadEnc Reinitialise PAD length to 64

ODR-PadEnc found slide 'slide/01-logo.jpg', fidx 0

ODR-PadEnc image: 'slide/01-logo.jpg' (id=0). Original size: 800 x 600. (JPEG, q=95, progr=n)

ODR-PadEnc resized image to 320 x 240. Size after compression 17074 bytes (JPEG, q=95; PNG was 29413 bytes)

ODR-PadEnc writing image as '0000.jpg'

Any help would be greatly appreciated. Thank you and kind regards

Ash Elford

Jun 6, 2022, 11:12:11 AM6/6/22
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Out of interest, what receiver(s) specifically have you seen this behaviour?


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Felix Hofmann

Jun 6, 2022, 11:14:48 AM6/6/22
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Hello Ash,

so far, I have observed this with receivers made by PURE and also MAJORITY.

Kind regards

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