Largest size gif

1

Hi All,

What is the largets size gif that can be displayed?

Im trying to display a 128x32 gif using a Teensy 3.2 and smartmatrix shield and the basic AnimatedGifs demo, ive changed the maximum bounds of the gif to 128x32 but i only get the text NO GIFS DIRECTORY scrolling…
If i change the LZW_MAXBITS to 11 from 12 the GIF does display but the lower 3rd of the image is distorted…
I think this may be a memory issue as its used 93% of memory with LZW_MAXBITS set to 12 and set to 11 it uses in the low 80’s and displays distorted but stilll displays…
Setting to a lower resolution like 32x32 and all is good.
Ive turned off USB to gain memory, is there any where else memory can be freed up?

Thanks
Dan

2

Are you using the new GifDecoder library or the old animated Gifs sketch? The new library is better with memory

3

Im using your original gifs demo sketch…
What would i expect from the new one? Also what would be the limit on panel and gif size i would expect when using a teensy 3.2?
Where would i download the new version?

It seems any alteration to the gifs sketch demo results in a NO GIFS DIRECTORY displayed, im guessing its memory related…

4

You should upgrade: GitHub - pixelmatix/GifDecoder

The Teensy 3,2 likely doesn’t have enough memory, I recommend a Teensy 4.1 if you switch to Teensy.

The ESP32 sometimes can’t load a SD card after a reboot. Try a power cycle if you get an error

5

Its almost impossible to get any sort of teensy without paying through the roof to do so. I have a few 3.2 teensys already so i want to use them .

Have you any ideas on why it would display no gifs directory ? Have you come accross this before?

6

I haven’t seen this but if it only happens when you are using a lot of memory, it probably has to do with that