How to Use P-Video (Pruna AI) on VdoBloom: Specs, Credit Costs and Prompt Tips

P-Video is Pruna AI’s speed-first video model on VdoBloom, and it is best used as a drafting engine: it turns a prompt or a still photo into a 4 to 10 second clip at 720p or 1080p, in seven aspect ratios, starting at 7 credits (about $0.35) for a 4-second 720p render. Pruna AI’s whole specialism is making models run leaner, and P-Video is that philosophy applied to video generation — you trade a little polish for enough speed that you can try six ideas in the time a premium model takes to render one.

What P-Video is actually best at

Treat P-Video as the sketchpad rather than the final camera. It is a dual-capability model, so the same engine handles text-to-video and image-to-video with an identical settings surface — duration, resolution and aspect ratio do not change between the two modes. That matters more than it sounds: you can test a text-only version and a photo-animated version of the same concept back to back without relearning a second control panel or paying two different rates.

The three jobs it does well:

• Previsualization. Block out a shot, check whether the camera move and the subject action read at all, then commit the winning prompt to a slower premium model.
• Volume iteration. At 7 to 16 credits per 720p clip you can run a dozen variations for the price of one flagship render.
• Format testing. Seven aspect ratios — 16:9, 9:16, 1:1, 4:3, 3:4, 3:2 and 2:3 — let you check the same idea in widescreen and vertical before you build the real asset.

Real specs and exact credit costs

P-Video’s picker offers durations of 4, 5, 6, 7, 8, 9 and 10 seconds at 720p or 1080p. Costs below are read straight from VdoBloom’s credit table, with dollars derived from the Lite plan rate where $15 buys 300 credits, so one credit is $0.05.

Duration	720p credits	720p cost	1080p credits	1080p cost
4 seconds	7	$0.35	13	$0.65
5 seconds	8	$0.40	16	$0.80
6 seconds	10	$0.50	20	$1.00
7 seconds	12	$0.60	23	$1.15
8 seconds	13	$0.65	26	$1.30
9 seconds	15	$0.75	29	$1.45
10 seconds	16	$0.80	32	$1.60

Two things fall out of that table. First, 1080p costs roughly double 720p at every length — there is no discount tier for going high-res, so draft at 720p on principle. Second, the per-second rate is flat: a 10-second 720p clip costs the same 16 credits as two 5-second clips at 8 credits each. Longer takes are not penalised, so if a single continuous shot serves the idea, take it in one pass.

For context on where P-Video sits in the catalog, a 5-second 720p clip from WAN 2.2 A14B costs 36 credits — four and a half times P-Video’s 8. That gap is the entire argument for keeping P-Video in your rotation.

How to prompt it well

Efficiency-tuned models reward specific, compact prompts and punish vague, sprawling ones. A few rules that hold up in practice:

1. Name one subject and one action. P-Video is a short-clip model. Four to ten seconds fits a single beat — a turn, a walk, a reveal. Two actions in one prompt usually yields neither.
2. Describe the camera explicitly. Write slow dolly in, static locked-off shot, or handheld tracking from the left. Left unstated, short-clip models default to drifting motion that reads as instability.
3. Put lighting and lens language early. Golden hour backlight, shallow depth of field, 35mm. These anchor the look before the model decides for you.
4. Match the aspect ratio to the intent in the prompt. If you are rendering 9:16, say vertical framing, subject centred, head-room at top. The ratio setting changes the canvas; the prompt changes the composition inside it.
5. Iterate at 720p, finish at 1080p. Lock the prompt cheaply, then spend the 1080p credits once.

For image-to-video, the source still does most of the work. A sharp, well-lit photo with the subject fully in frame and clear separation from the background animates cleanly; a cropped, low-light or heavily compressed photo produces smearing that no prompt fixes. If you animate a photo of a real person, you must have that person’s consent before you generate or publish the clip.

A worked example

Say you are building a vertical ad for a linen shirt and you have one product photo on a model.

Step one: open Image to Video, select P-Video, upload the still, set 9:16, 720p, 5 seconds. Prompt: model turns slowly toward camera, linen shirt catching soft window light, static locked-off shot, shallow depth of field, warm interior tones. Cost: 8 credits, $0.40.

Step two: the first take drifts. Re-run with the camera clause strengthened — tripod-locked, no camera movement — another 8 credits. Run a third variant with the turn reversed. You are now three takes deep for 24 credits, $1.20.

Step three: take the winning prompt to 1080p at 5 seconds for 16 credits, $0.80. Total spend to a finished vertical clip: 40 credits, or $2.00 — less than a single render on most flagship models.

When to pick a different model

P-Video is a drafting tool, and it is honest about that. Reach elsewhere when:

• You need audio. P-Video has no native sound. Models with native audio generation handle dialogue and ambience in one pass.
• You need more than 10 seconds. The picker caps at 10. For 12 to 15 second scenes with multiple action beats, a longer-form model is the right call.
• Physical realism is the deliverable. For hero product motion or human motion that must survive a full-screen viewing, step up to a premium model such as Seedance 2.5.
• You need a character swapped into existing footage. That is a different tool entirely — the Animate Replace tab, where P-Video Replace handles budget character swaps while keeping the original motion and camera.

Full spec sheet, preview clip and rating live on the P-Video model page, and every credit pack and plan is on pricing. New accounts get 10 free credits with no card, which is enough for one 4-second 720p draft plus change.

Frequently asked questions

How much does P-Video cost per video?

From 7 credits ($0.35) for 4 seconds at 720p to 32 credits ($1.60) for 10 seconds at 1080p. The rate is flat per second within each resolution, so length scales the cost linearly with no bulk discount or penalty.

Does P-Video do text-to-video or image-to-video?

Both, from the same model. It is available on the Text to Video tab and the Image to Video tab, with identical duration, resolution and aspect-ratio controls in each mode.

What is the longest clip P-Video can make?

10 seconds. The duration picker offers whole seconds from 4 to 10, at either 720p or 1080p.

Is 1080p worth double the credits?

Only for final renders. Because 1080p costs roughly 2x the 720p rate at every length, the efficient pattern is to iterate prompts at 720p until the motion is right, then spend once at 1080p.

Which aspect ratios does P-Video support?

Seven: 16:9, 9:16, 1:1, 4:3, 3:4, 3:2 and 2:3. The 3:2 and 2:3 pair matches classic photographic framing, which most short-clip video models skip.

Can I download P-Video clips without a watermark?

Yes on any paid plan — paid accounts download watermark-free with commercial rights. Free accounts can still generate and preview using their 10 starter credits.