I've made a basic animation in Adobe Animate CC 2019 and exported it as a PNG sequence. I need to encode the sequence to FLV to use it in Adobe Animate CC 2019. So, I'm using this command in FFMPEG:
ffmpeg -i "INPUT_FILE" -q:v 2 "OUTPUT_FILE"
However, I'm getting wrong output. A frame is stuck on the video the whole time. I just encoded another video without any issues, but, this one won't work. I also tried using the latest version from their official website.