As one of Vuo's developers, I work on Vuo's engine (the thing that makes compositions run), work on nodes, and write documentation. You'll see me on the forums answering people's questions about Vuo.
I enjoy using Vuo to make live music visuals. My hope for Vuo is that it will grow into a community of people of diverse backgrounds and identities making lots of different artistic, useful, unique, goofy, beautiful, crafty, wonderful compositions.
Estoy practicando para ser competente en español. Si publicas en el foro en español, trataré de responder en la misma manera.
The Play Movie node can, for the most part, play animated GIFs with uneven timing. For example, in the first attached composition, Play Movie correctly pauses for 3 seconds on the first frame before moving to the second frame.
However, looping isn't working right. Play Movie correctly plays the first frame the first time around, but misses it on the repeats. Instead it dwells on the last frame for 3 seconds.
The second attached composition is a workaround. Instead of using the node's loop mode, it uses the Finished Playback event to loop.
I see you already found this other discussion about appending text, and the proposal of adding an Append option to Save Data.
The attached composition demonstrates accumulating text with an Enqueue node, then writing it all to file when you click a button. (An alternative to the Enqueue node would be a feedback loop with Add to List and Hold List, similar to the vuo.list > Shift Squares example composition.)