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Cheerful_beingd667
Participant
August 26, 2026

Firefly video errors

  • August 26, 2026
  • 1 reply
  • 9 views

The video I am generating with Firefly doesn't have the voiceover. I told it to add the voiceover again in the 2nd generation and it still didn’t include it.

The text on the last shot (Preorder) is missing the second 'r.'

The AI changed the book cover and made a woman’s hand hold a pair of goggles on a man’s neck instead of keeping him within the goggles as the subject of her view. 

The AI changed the nail polish color of a few fingers. 

Could someone help me make sure this is the right tool for me before I officially sign up? I am searching for an AI to make multiple videos for book promotion, including a trailer. I have the book cover and want to use it as the basis for this. 

1 reply

M
Community Manager
Matt DelargeCommunity Manager
Community Manager
August 26, 2026

Hi Cheerful_beingd667,

Regarding the voice-over issue, in this particular case, I’d recommend using Adobe Express

It’s free, and you can also add your voice-over directly to the video.

Now, before jumping straight into the answer, let me clarify one thing: generative AI is all about testing and experimentation. Because of that, errors can occur, and the results may not always turn out exactly as expected.

Text to Video:
For the Text to Video feature, you can upload your video, choose the Runway Gen-4 Aleph (Partner Model), and enter your prompt. The number of credits required is displayed next to Generate.

The main limitation is that the edited video will only generate a 5-second output. This applies to both Text to Video and Boards. The results are shown below.

Boards:
For this test, the original video was first trimmed down to 7 seconds, as the reference file needs to be under 32MB. The model was then selected, and the prompt was entered.


Summary:
Yes, Firefly can edit your videos, but there are some limitations to keep in mind, including the duration of the generated videos and the size of the files you can upload.

All of these generations require a subscription. You can compare all Firefly plans here.

You can also find useful tutorials created by our experts here, including one covering Text to Video here

I hope this helps.

Thanks

Matt

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