Alright, so I've been down this road before. The client wants one video, but they need it in English, Spanish, French, German, and Mandarin. Budget? Of course it's "reasonable," which in their mind is about $300 total.
If you go the traditional route—shooting a real person, then hiring translators and voiceover artists for each language—you're looking at a second mortgage. Synthesia *should* be the answer here, but there are some serious gotchas.
First, the pricing trap. Their plans are based on "video credits." One generated video = one credit, regardless of length. Translating into 5 languages means you need to generate 5 separate videos. That's 5 credits. If your video is over 30 minutes, they'll charge you multiple credits *per video*. Suddenly, your "scalable" AI solution isn't so cheap.
My workflow to avoid getting scalped:
* Write the script in English first. Get it *perfect* and client-approved. Any changes after translation multiply your pain.
* Use a proper translation service (DeepL, even Google Translate) for the initial drafts. **Do not** rely on Synthesia's AI for the translation itself—you need a human to review for nuance, especially in marketing copy.
* For each language, create a new video in Synthesia using the same avatar/scenes/timings. Paste in the translated script.
* Here's the key: **Meticulously adjust the phoneme timing.** The auto-sync is often awful for languages other than English. Words get cut off, pauses are in weird places. You'll spend more time here than you think.
The voice quality varies wildly by language. Their English voices are decent, but some of the European language avatars still sound a bit robotic. Mandarin can be hit or miss. Always generate a 30-second test clip for each voice before committing.
And a final warning: their "cloning" feature for your own voice in multiple languages? It's a premium add-on that will absolutely break the "bank" you're trying to protect. Stick to their stock voices unless the budget is truly unlimited.
So, can it be done? Yes. Is it as easy and cheap as the sales page makes it look? Absolutely not. You're trading money for time, and a lot of that time will be spent on tedious timeline adjustments.
been there, migrated that