What Google says about the prompt language
The Flow help page on where the product works says to use English prompts for the best results. Some products may accept other languages, but the quality can change with the language and with how complex the text is. Portuguese is on the list of languages Flow is available in, and Brazil is on the country list, for people 18 and older. The same page says features may vary by country.
In the Gemini Omni Flash guide, English is fully supported. Other languages have not been evaluated: they may work, and the result can vary. The Veo 3.1 guide on the Google Cloud blog, dated 16 October 2025, is still the formula Google publishes for directing Veo: cinematography, subject, action, context, and style and ambiance.
Portuguese may still work, and the Google text asks for English when you want the steadier result. Test both, knowing that each test spends credits.
There is a second reason to rewrite now. The Flow credits help page says that on 5 December 2026 Veo 3.1 Fast, Veo 3.1 Quality and Omni Flash 1.1 leave Flow. Until that date you can still generate with them. Google recommends new projects on Omni Flash 1.2 or Veo 3.1 Lite. The credit math for that move is in the Omni Flash 1.2 credits guide.
The structure, with two examples
The Veo 3.1 guide splits a shot into five parts, in this order: cinematography, subject, action, context, style and ambiance. Sound comes after that. Put speech in quotation marks. Effects can start with SFX: and the background with Ambient noise:. The Omni guide asks for the scene, the camera move, the light and the mood, and its single-scene example labels sound with Sound design:.
By default, Omni Flash tries to make a video with a few different shots. If you want one scene, the guide tells you to write that in the prompt. The phrases Google uses are In a single unbroken scene, In a single continuous shot and No scene cuts. To leave something out, write it in the prompt itself, for example No dialogue. The Gemini API has no separate negative-prompt field.
A Veo 3.1 Lite clip in Flow is 4, 6 or 8 seconds, at 720p. Omni Flash 1.2 is billed by the second. On the Flow credits page, clips up to 10 seconds are open to every account; seconds 11 to 15 need Google AI Plus, Pro or Ultra. One prompt should describe one action, not a whole film. The Omni API docs list 16:9 and 9:16. In Flow, check the ratio in the prompt box before you generate.
| Part | What to write |
|---|---|
| Camera | One move. Slow push-in, or a shot that pulls back. |
| Subject | Who or what is in frame, with two or three visible details. |
| Action | One action. A hand lifts a mug. Not a whole morning. |
| Place and light | Where, time of day, and the light. |
| Sound | The spoken line in quotes, then the room tone. Say No music if you will add music later. |
| One shot, on Omni | In a single continuous shot. No scene cuts. |
Example for a bakery Reel, scene in English.
Close-up, slow push-in, in a single continuous shot. A ceramic coffee mug on a wooden counter in a small bakery in the morning, warm window light, shallow depth of field. A hand lifts the mug. The baker says, "Acabou de sair do forno." Ambient noise: a quiet street and a soft oven hum. No music.
The scene is in English, as the Flow help page recommends. The line in quotes is in Portuguese. Google does not publish a promise that the line will come out in Portuguese: on Omni, other languages have not been evaluated. Treat the line as a short test. Flow does not support editing or generating what people say in an uploaded video. To add speech, generate a new video from a prompt.
The same request in Portuguese, for a comparison.
Plano fechado, a câmera se aproxima devagar, uma tomada contínua, sem cortes. Uma caneca de cerâmica num balcão de madeira, padaria pequena de manhã, luz quente da janela. Uma mão levanta a caneca. Sem música.
The second text follows the same order, in Portuguese. It may work. The Flow help page says the quality can vary. If the first Portuguese test comes out wrong, rewrite the camera and the action in English and generate again.
To correct a clip already made with Omni Flash, the guide asks for a short request plus the sentence Keep everything else the same. A long edit prompt can change what you meant to keep. Example: Change the light to late afternoon. Keep everything else the same.
How many credits a round of tests spends
Each generation and each edit spends credits. The Flow credits page bills Omni Flash 1.2 by the second: 1 credit per second at 360p and 3 credits per second at 720p, up to 10 seconds, for every account. The totals below are the arithmetic of that rate, not a finished price Google publishes. Rates can change: the help page says to check Settings on the prompt box. One request can produce more than one generation, and the rate is per generation.
| Test | Credits |
|---|---|
| Omni Flash 1.2, 8 seconds, 360p | 8 (8 × 1) |
| The same clip at 720p | 24 (8 × 3) |
| Three separate generations of the 360p draft | 24, if each one is a single generation |
| Veo 3.1 Lite, 4, 6 or 8 seconds, 720p | 5 on Ultra, 10 for everyone else |
Editing an Omni Flash 1.2 clip uses the same per-second rate as generating a clip of that length. Three drafts plus one 8-second 720p final add up to 48 credits if each step is one generation. Seconds 11 to 15 cost more per second (2 at 360p, 6 at 720p) and need Plus, Pro or Ultra, so keep the wording tests inside 10 seconds. The 0-credit lower-priority mode of Veo 3.1 Lite is listed only for Ultra 20x subscribers and family plan managers. This page does not promise that mode on a ChugAx seat.
The full table, including seconds 11 to 15, is in the credits guide and on the Flow credits help page.
Which Veo 3 · Unlimited Credit plan fits
ChugAx is an independent shop in Vietnam. It sells access to Google AI Ultra 20x plans. Unlimited Credit means the shop refills the Family Flow pool with no cap on how many times it refills. It does not mean a video costs zero credits. Omni Flash and Veo still spend credits on every generation.
| Plan | Who shares the pool | Price for the month |
|---|---|---|
| Veo 3 · Unlimited Credit · 1 member | The shop manages the Family. Up to 5 customers in that group share one pool. | 8,000,000 VND (about US$ 310.1, about R$ 1.538,46) |
| Full Family · Unlimited Credit | You manage the Family. You and 4 people you invite share the pool. | 40,000,000 VND (about US$ 1,550.4, about R$ 7.692,31) |
If you work alone and can accept a pool shared with other customers, the 1-member plan is the smaller bill. If the credits must stay with people you invite, choose Full Family. Ask the bot about the support tool that helps you use a shared pool. If the 1-member plan stops during the month, the shop restores access or arranges a replacement account; if it cannot, it refunds the unused time. On Full Family the shop restores the plan when the problem comes from its own account; if it cannot, it refunds the unused time. Problems with your own Gmail are not covered. The three Full Family exclusions are in the warranty guide.
How to order from Brazil
Orders go through the Telegram bot @chugax_gl_bot. The website does not take payment. There is no Pix key: Pix only moves money inside Brazil.
- Tell the bot which plan you want. It checks that your Gmail is eligible and states the amount.
- Pay only after that confirmation. Buy USDT with Pix and send it on the network the bot names (TRC20 or BEP20), or add reais to Wise with Pix and send VND to the MB Bank account the bot gives.
- The shop activates the plan 1 to 3 days after it has the details and confirms payment. That wait is for a new order, not for a later refill.
Prices are set in VND for the whole term. Reais on this page use 5,200 VND per real and are a reference only. The amount you pay is the one the bot confirms. The steps in more detail are in paying from Brazil. Never send a password, an OTP or a recovery code.
What the plan does not change
Refills run from 10:00 to 21:00 Vietnam time (GMT+7), which is 0:00 to 11:00 in Brasília, with 2 to 3 hours between refills. Message the bot when the pool hits zero. Outside that window the refill waits until support is open again. This is not an instant, 24-hour service.
- Google and Flow limits still sit on top of the credit count. The help page says the rates can change at any time.
- Features may vary by country. This page does not claim that every Omni option is open in Brazil.
- Flow does not support generating videos of prominent people, in any region. It also does not support editing what people say in an uploaded video.
- The Omni guide says generated videos carry an invisible SynthID watermark.
- A prompt that fits Omni Flash 1.2 can still miss on Veo 3.1 Lite, and the other way around. The Flow models page says Veo 3.1 Lite does not do video-to-video editing and does not extend a clip. Retest the winning wording on the model you will keep.