AI Video Glossary: Every Term You'll See on PlayVideo.AI
A plain-English dictionary of the models, modes, and concepts behind AI video — from text-to-video and lip-sync to Kling V3.0 4K and Runway Gen-4. Every entry links to the page where you can actually use it.
#
- #4K resolution
Video output at roughly 3840×2160 pixels — four times the pixel count of 1080p HD.
4K is the highest output resolution available on PlayVideo.AI today, delivered through the Kling V3.0 4K model. Most other generators top out at 1080p and require a separate upscaling step. Use 4K when the video will be viewed on large screens, projected, or used in print/paid ad contexts where compression artifacts are obvious.
A
- #AI Avatar (AvatarFX)
Effect that animates a still portrait into a talking, head-moving avatar driven by audio.
AvatarFX takes a single portrait and a voice track and produces a natural-looking talking head. Great for explainer videos, faceless channels, and personalized cold outreach. Available as a one-click effect on /effects/avatar.
- #AI background music
Royalty-free instrumental tracks generated by AI to score your video.
Generate a custom score for any video without licensing third-party stock music. Pick a mood and length, get a unique track. Available on /create-music and bundled into effect outputs where it makes sense.
- #AI Insta Image
Effect that turns a portrait into stylized Instagram-ready photoshoot images.
Generates a consistent subject across multiple looks and backdrops in one batch. Good for personal brand content and product-on-person shots. Available at /effects/ai-insta-image.
- #AI News effect
Pipeline that turns a real-time news topic into a branded 9:16 short with on-screen text.
Combines a web-search step, a script-writing step, and a 9:16 image-to-video render with text overlay. Output is ready for Reels, Shorts, and TikTok. See /effects/ai-news.
- #AI Pet Dance
Effect that turns a single pet photo into a viral dancing-pet video.
One of the most-shared formats on TikTok. Upload one pet photo, pick a dance, and PlayVideo.AI handles the motion transfer and audio sync. Live at /ai-pet-dance.
- #AI Singing effect
Combines a song and a portrait to produce a lip-synced music video.
Pairs lip-sync with motion transfer so the subject performs the song convincingly. See /effects/ai-singing.
- #AI Travel Trends
Effect that places a portrait into 30 iconic travel destinations as photo or video.
Generates a consistent character across multiple backdrops — useful for fashion lookbooks, travel content, and viral "where in the world" carousels. See /effects/ai-travel.
- #AI Video Ads
One-shot product-ad generator that takes a product photo + name and outputs a finished ad.
Ships scripted, voiced, and edited paid-ad creatives without a video editor. See /effects/ai-video-ads.
- #AI Virtual Outfit
Virtual try-on effect — upload a portrait and clothing images, see the outfit on the subject.
Useful for e-commerce, lookbooks, and stylists. See /effects/ai-virtual-outfit.
- #AI voices
Synthetic voice library with 100+ presets for narration, dubbing, and character work.
Preview and pick from 100+ voices across accents, ages, and tones. Voices feed into voice dubbing, lip-sync, and effect outputs. Browse on /ai-voices.
- #Aspect ratio
The width-to-height ratio of a video frame. Determines where the clip will look right.
PlayVideo.AI supports 9:16 (Reels/Shorts/TikTok), 16:9 (YouTube), 1:1 (feed posts), 4:3, 3:4, and 21:9 (cinematic). Pick the ratio before generating — re-cropping a different ratio loses information.
C
- #Cinematic motion
Camera-style movement — slow dollies, smooth tilts, racking focus — produced inside the model.
Triggered by camera-language prompts ("slow dolly in", "low-angle tracking shot"). Strongest in WAN 2.7 and Kling V3.0 4K. The model decides the motion — there's no separate camera rig.
- #Clip duration
How long a single generation runs. PlayVideo.AI supports up to 15 seconds per generation.
Longer pieces are built by chaining clips with video extension. Most models look best in the 5–10s range; longer single shots can drift in composition.
D
- #Dance AI
Effect that animates any photo with realistic dance motion transfer.
Driven by reference dance videos — the model copies pose-by-pose motion onto your subject. See /effects/dance-ai.
E
- #ElevenLabs
Third-party AI voice provider. PlayVideo.AI bundles ElevenLabs-grade voices natively.
Many creators wire ElevenLabs to a separate video tool. PlayVideo.AI ships AI voices and voice dubbing in-product so you don't need a second subscription.
- #Extend video
Continue an existing clip past its original duration without regenerating from scratch.
See video extension.
F
- #Frame rate (fps)
How many frames per second the output plays at. 24fps is cinematic, 30fps is standard, 60fps is smooth motion.
Most PlayVideo.AI models render at 24 or 30fps. Higher frame rates look smoother but cost more credits and exaggerate motion artifacts.
G
- #Generation queue
The shared in-app queue that processes every render — text-to-video, effects, voice, lip-sync.
Submitting a job adds it to the queue and you can keep working while it renders. The same queue handles all five effect pipelines plus chained voice/lip-sync steps, so dependent jobs run in the right order automatically.
H
- #Happy Horse 1.0
Stylized PlayVideo.AI model tuned for playful, animated, high-energy looks.
Best for fun social content, kid-friendly animations, and stylized ads. Not the right pick when you need photoreal output — use Kling V3.0 4K or Seedance 2.0 for realism.
I
- #Image-to-video
Generate video that starts from a still image you provide, instead of from text alone.
Lets you control the look exactly — character, lighting, framing — before the model adds motion. The opposite of text-to-video, which builds everything from a prompt. Both modes are available on /create-video.
K
- #Kling V3.0 4K
Highest-fidelity video model on PlayVideo.AI. Native 4K output, strong on detail and texture.
Pick Kling V3.0 4K when you need print-grade or large-screen quality. Costs more credits per second than general-purpose models. Compares favorably against Runway Gen-4 on detail and resolves fine textures (skin, fabric, foliage) better at native 4K.
L
- #Lip-sync (AI lip-sync)
Aligning a subject's mouth movement to an audio track so the speech looks natural.
PlayVideo.AI's lip-sync drives the mouth from any audio file or AI-generated voice. Used inside AvatarFX, AI Singing, and as a standalone step on existing clips.
M
- #Motion transfer
Copying motion from a reference video onto a still subject (a photo of a person, pet, or object).
The technique behind Dance AI, AI Pet Dance, and parts of AI Singing. Different from text/image-to-video — the motion comes from a real reference, not from a prompt.
N
- #Negative prompt
Tells the model what to avoid in the output (extra fingers, blur, watermarks, certain styles).
Use sparingly — too many negatives can starve the model of context and make output worse. Common entries: "low quality, distorted face, extra limbs, text on screen".
O
- #OpenAI Sora
OpenAI's text-to-video model. Often the reference point in AI video comparisons.
Strong all-rounder, but gated behind a ChatGPT subscription. See PlayVideo.AI vs OpenAI Sora for the full breakdown. PlayVideo.AI gives you Kling V3.0 4K, Seedance 2.0, and Pro 2.0 in one open-access account, which lets you pick the right model per shot.
- #Original Ultra
PlayVideo.AI's flagship general-purpose model. Balanced quality, motion, and prompt fidelity.
A strong default when you don't want to overthink the model choice. Sits between the fast Pro 2.0 and the high-fidelity Kling V3.0 4K.
P
- #Pika
Third-party AI video generator. Sometimes compared head-to-head with PlayVideo.AI.
See PlayVideo.AI vs Pika for the direct head-to-head, or the comparison hub for all competitors. Short version: Pika is strong on stylized animation; PlayVideo.AI bundles more models and native 4K.
- #Pro 2.0
Fast, reliable general-purpose PlayVideo.AI model. The recommended default for most prompts.
Lower credit cost, fast turnaround, works well across text-to-video and image-to-video. Use Pro 2.0 first; switch to Kling V3.0 4K or Seedance 2.0 only when the shot needs their specialty.
- #Prompt
The text instruction you give the model describing what to generate.
Good prompts include subject, action, environment, lighting, lens, and motion direction. Example: "a snow leopard padding across a frozen lake at dawn, soft side-lighting, 35mm cinematic, slow tracking shot". See also negative prompt.
R
- #Revolution 2.0
PlayVideo.AI model tuned for stylized, animated, and surreal looks.
Use when you want the output to feel illustrated, painterly, or dream-like rather than photoreal. Pairs well with stylized prompts.
- #Runway Gen-4
Third-party AI video generator from Runway. Strong on cinematic motion; pricier and 1080p-capped.
Direct head-to-head: see PlayVideo.AI vs Runway Gen-4. Short version: PlayVideo.AI is cheaper, has no watermark on free output, ships native 4K, and bundles 10+ models — Runway has the deeper timeline editor.
S
- #Seed
A number that locks the model's randomness so a prompt produces the same output twice.
Use a fixed seed when you want to iterate on prompt wording without re-rolling the random variation, or when you need to reproduce a generation later.
- #Seedance 2.0
PlayVideo.AI model best known for natural, physically-plausible motion realism.
Closest match to Runway Gen-4 motion at a lower price point. Use Seedance 2.0 when realistic body mechanics, walking, or hand interaction matter more than fine texture.
- #Stylization
How far the output drifts from photoreal toward illustrated, painterly, or surreal looks.
Driven by the model choice (Revolution 2.0, Happy Horse 1.0) and by style cues in the prompt ("Studio Ghibli", "oil painting", "cyberpunk").
- #Suno
Third-party AI music generator. PlayVideo.AI ships its own AI background music in-product.
Most workflows that wire Suno to a separate video tool can be collapsed into PlayVideo.AI's built-in AI background music.
T
- #Talking head
Video format where a single person speaks directly to camera — narration, explainers, vlogs.
The native fit for AvatarFX: combine a portrait, a voice, and a script and you have a faceless or AI-presented talking head.
- #Text-to-video
Generating a video clip from a written prompt only — no reference image required.
The classic AI video mode. Best for original scenes you don't have footage of. If you want to lock the look of the subject first, use image-to-video instead.
U
- #Upscaling
Increasing a video's resolution after generation — e.g. 1080p → 4K — without re-rendering.
PlayVideo.AI bundles built-in upscaling so you can generate fast at 1080p and finish at 4K. Competing tools usually charge separate credits or require a third-party tool.
V
- #Video extension (extend video)
Continue an existing clip past its original length, picking up from the last frame.
The standard way to build longer pieces — generate a 10-second clip, extend by another 10s, and so on. Each extension is its own generation step that pulls from the previous clip's final frames for continuity.
- #Voice cloning
Generating speech in a specific person's voice from a short audio sample.
Underpins voice dubbing when you want the dubbed track to keep the original speaker's voice. PlayVideo.AI requires consent before cloning a voice — see our policies on /safety.
- #Voice dubbing
Translating spoken audio into another language while keeping the original voice and lip motion.
Combines voice cloning and lip-sync so a video plays naturally in a second language. Available on /ai-voice-dubbing.
W
- #WAN 2.7
PlayVideo.AI model tuned for long camera moves, crowd scenes, and complex environments.
Use when the shot calls for sustained camera motion (drone fly-bys, dolly shots) or many subjects in frame. For close-up character work, Kling V3.0 4K or Seedance 2.0 typically win.
- #Watermark
A visible logo overlaid on generated video. PlayVideo.AI does not watermark output on any tier.
Some competitors stamp a logo on free-tier output. PlayVideo.AI ships clean video on free and paid tiers — videos can go straight to social or paid ads.
See also
- Create Video — text-to-video and image-to-video with the full model picker.
- Effects — one-click templated pipelines (pet dance, news, avatar, ads, more).
- PlayVideo.AI vs Runway Gen-4 — head-to-head comparison.
- Blog — tutorials, model deep-dives, and prompt guides.
- Pricing — credits and plans.