Initially, Piktostory only supported videos in English. However, we always knew we wanted to support more languages. We now support 30+ languages - from Mandarin to Finnish! Transcription can still improve, but I'm pretty happy we managed to deliver this as it will open up our market to include content creators whose main language isn't English.
Free trial: https://piktochart.com/piktostory
If you create content in another language, please give it a try and let me know how you find it!