Why AI Video Garbles Arabic Text, and the Reliable Fix

01What the problem looks like

You prompt a coffee shop ad and ask for a sign reading «قهوة الصباح» (morning coffee). Everything in the clip looks great except the sign: the letters stand apart like typewriter text, the word runs left to right, or the shapes look vaguely Arabic without being real letters. It is one of the most common complaints from Arabic creators, and it is not a mistake in your prompt.

• Disconnected letters: ق ه و ة instead of the joined word قهوة.
• Wrong direction: the word appears mirrored or reversed.
• Invented glyphs: strokes and dots that suggest Arabic but cannot be read.
• Text that morphs between frames: even if a word is right in one shot, it drifts as the camera moves.

This is not unique to Arabic; long English text can warp too. Arabic simply suffers more, for reasons rooted in how the script works.

02Why it happens: the model paints, it doesn't typeset

A word processor or video editor renders Arabic through a text-shaping engine. It knows that the letter ha has four forms depending on its position, that lines run right to left, and that lam followed by alif becomes a ligature. A video generation model has none of that. It predicts pixel colours frame by frame, and letters are just shapes it picked up from images during training.

Models keep improving, and some can occasionally render a short Arabic word acceptably, so we won't claim any model can never do it. But occasionally is not good enough for an ad carrying your brand name. When the text must be right in every frame, the dependable approach is not to ask the video model to write it at all.

03Fix one: prompt for no on-screen text

Start by stopping the model from trying. Write the scene description in English, which most models follow more precisely, and say explicitly that you want no text, logos or readable signs. If the setting naturally has signage, like a market or a street, ask for it out of focus or blank.

• Ban text outright: end every prompt with no text, no letters, no logos.
• Avoid signs and screens: instead of a shop sign with the store name, ask for a warmly lit shopfront.
• Blur the background: shallow depth of field softens any incidental text.
• Keep dialogue out of the prompt: the words come from the voice and captions, not the picture.

In Vocla Video this happens by default. When your script is split into scenes, each visual prompt asks for no on-screen text or logos, and you can edit any prompt before rendering. For more prompt technique, see our AI video prompts guide.

04Fix two: Arabic as a real caption layer

Once the scenes are clean, the written words go on top as a separate layer. That layer is set in a real Arabic-capable font through a shaping engine, so letters join, the line runs right to left and the text holds steady in every frame. It is how film subtitles work, which is why they never warp.

A separate caption track also matches the audio exactly. If the voiceover is in Saudi dialect, the captions show those same words, and when you edit a line the captions follow. In Vocla Video the voice is generated first, word timings are taken from it, and the Arabic captions are burned into the final MP4 with correctly joined letters, in the style you choose:

You can place captions at the bottom or the centre of the frame. Already have a finished video from another tool or your camera? Vocla's AI captions transcribe it and burn in Arabic captions in five styles, with SRT and VTT files alongside the MP4.

05The workflow in Vocla Video

1. 1Write the script: only the words to be spoken, in Fusha or a dialect, no visual notes.
2. 2Pick voice and dialect: choose Saudi, Emirati, Egyptian or another dialect in the dialect picker, then a voice.
3. 3Set captions: turn them on, choose clean, bold or karaoke, and bottom or centre.
4. 4Review the scene plan: make sure no prompt asks for signs or written screens, and edit as needed.
5. 5Approve the storyboard: generate a still per scene before spending credits on video, and redo any still with stray lettering.
6. 6Render and download: voice, captions and optional music land in one MP4; re-render a single scene if one misbehaves.

Plan limits matter. Starter at $4.99 includes 30 video seconds a month, up to 15 seconds per video, at 720p in 9:16 with a watermark. Professional at $29 includes 300 seconds, up to 60 seconds per video, at 1080p in every format without a watermark. The Free plan does not include video generation.

06When you really need text inside the scene

Sometimes a product name or logo has to be visible. These routes beat asking the video model to draw it:

• Add it in the edit: design the logo or title as a transparent image and overlay it in CapCut, Premiere or similar after export.
• Start from a product photo: from Starter up you can upload a product photo as the first frame. Small print on packaging can still shift with camera motion, so keep the movement gentle.
• Put it in the captions: an offer name or promo code can be spoken and shown in the captions, where it reads correctly.
• Design an end card: a closing frame in your brand colours with the title and logo, made by you and appended at the end.

The principle is a division of labour: the video model for pictures, generated voice for speech, captions for writing. Each layer does what it is good at, and the Arabic stays intact.

07A pre-publish checklist

Before you publish any AI-generated Arabic video, watch it once with sound and once muted. The silent pass shows you what most scrollers actually see, since many people watch with the sound off and the captions carry the whole message.

1. 1Scan every scene: any letters, signs or logos you did not ask for? Re-render that scene alone.
2. 2Match captions to audio: read along while listening and check names and numbers appear as spoken.
3. 3Check caption placement: on vertical video, keep captions clear of the platform buttons and try centre placement on busy shots.
4. 4Keep the dialect consistent: an Emirati voiceover should not carry Egyptian wording in the captions.
5. 5Test on a phone: a font that looks fine on a laptop can be too small on a handset.

It takes two minutes and protects your brand from a mirrored word or an unreadable price. If you publish regularly, make it a fixed step in your workflow, like proofreading a written post.