use Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing, and Debugging Tools
You might want to replace your local variables temporarily by global variables to be able to use Do it until you found the bug...
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.
Thanks so far! I managed to find two files for each video, that was recorded:
/storage/emulated/0/DCIM/100ANDRO/Name of Video.mp4
Size: depending of lenght
/storage/emulated/0/Android/data/edu.mit.appinventor.aicompanion3/files/Name of Video.mp4
Size: always 9Byte and I can´t open it manually
Theses errors occure:
Companion Screen:
The file seems to be in ASD.
Error: The player can´t load the file in /storage/emulated/0/Android/data/edu.mit.appinventor.aicompanion3/files/Name of Video.mp4
I´m not sure if this 9 Byte file is the right reference to open the Video, and I don´t get why it is created.
as already said
the message "the variable is not bound in the current context" does not help very much in debugging...
the video player might expect a full path, which starts with file:///storage/emuated/0/Android/data... or a relative path, which is /Android/data/...
Taifun
hi there!
i am currently working on my project i.e based on emotion detector in which i need to send my audio file from mit app inventor to my machine learning model via mqtt and my mentor suggested me that use base64 for this it makes easy for me, my doubt is we are converting the audio file into string, right? it is encoding i want to send the string to my machine learning model as audio file, can you please help me with this. By the way, it's a great work i observe keenly.
I have not tried to send files by MQTT, the usual thing is to send small information.
Do you need to use MQTT? Can you use FireBase or CloudDB? What is your "machine learning model"? What is your MQTT Broker?
https://community.appinventor.mit.edu/t/esp32-mqtt-broker-publish-subscribe-thingspeak/10490
How to set Base64 file to Horizontal/VerticalArrangement.Image or Button.Image ?
Try this extension:
hello i have question is the tiny db save videos?
i want to store 100 videos in tiny db
Would not recommend even trying.
Store the videos on your device, somewhere, and link to them using file paths in the tinydb instead.
Hello everyone
how can i save audio in Base64 extension?
Why ?
i want user to pick an audio file and play it and save it for next times
(something like music player)
You do not need to encode to base64 to do that...
Can the TinyDB save it?
Just save the filepath to the audio file?
hi, Im trying to get pictures and save them on drive. Im using the Takepicturestobase64 block to do it, and work, but the resolution and the scale of the picture is geting small. should I try another kaind of block to fix this?
Thank you so much in advance
If I remember correctly the block you are using gets a preview image not a full image from the camera.
It may be better for you to use the TakePicture block from the camera, then set the resulting image to an image component and convert this image to base64.
You should bear in mind that a base64 of an image is generally 1.3 times larger than the image size.
works perfectly (dont know why the sizes changes depenting if the picture is vertical or horizontal but its work to me) thank you so much!
i want to convert image to base 64 and upload to spreadsheet, then again get the base64 from spreadsheet and show in image component without storing in the file. is it possible?
I did a guide for this a while ago:
See the addendum at the end...
