Caption letters are readable but mixed-script punctuation moves
When caption letters are correct but punctuation or numbers appear beside the wrong phrase, investigate bidirectional text rendering rather than immediately changing character encoding. Preserve the logical text order and compare the cue in its actual receiving player. Right alignment alone does not establish the intended reading order.
Open the relevant downloader · Platform tools and access limits
Separate readable characters from their displayed order
Identify a cue containing both right-to-left and left-to-right text, such as an Arabic sentence with an English product name or a Hebrew title beside a number. Note which punctuation or numeric group appears attached to the wrong phrase.
Garbled letters or replacement characters can still require the encoding guide. Missing character boxes can require font coverage. Correctly drawn characters arranged unexpectedly point to a different investigation: how the renderer resolves mixed directional runs.
Keep the original authorized resource untouched and make a working copy. Compare with the supplier’s intended wording or a competent language reviewer. Do not reverse an entire sentence until it looks plausible in one application; visual order and the text’s stored logical order are different observations.
Check base direction and alignment separately
The WebVTT specification determines a cue line’s base direction from its first strong directional character. It distinguishes direction-relative start and end alignment from physical left and right alignment. A box’s position and the reading direction of its text are therefore separate choices.
Inspect the beginning of the affected line, including a name or label that may be written in the opposite direction from the rest of the sentence. Do not assume that an audio-language label controls the caption renderer’s base direction. The actual written resource needs its own checks.
Vertical text settings are another separate concept. Do not use a vertical-writing option as a generic fix for horizontal Arabic or Hebrew captions. Test the intended horizontal layout with the receiving tool’s documented text controls.
Use supported directional isolation deliberately
W3C’s internationalization guidance applies Unicode direction controls to plain-text resources including WebVTT. It explains LRI, RLI and FSI isolation, closed by PDI, for directional ranges. Isolation helps keep an embedded phrase from interacting with surrounding punctuation or numbers.
These controls are invisible. Use an editor that lets the reviewer inspect them and keep paired ranges correctly matched. Do not scatter unknown control characters through every cue or copy a visually reversed string from an unrelated page.
For an actual caption correction, identify the smallest relevant range and use a format-aware workflow. Ask the supplier for a corrected resource when the intended structure is uncertain. A mechanically valid file does not guarantee that a language reader will interpret its punctuation correctly.
Compare the cue in the destination renderer
Load the working caption resource alongside the exact authorized recording in the intended player. Check the affected cue at its original time and compare a screenshot or written observation with the expected reading order. Preserve timing while investigating presentation.
Test mixed names, adjacent numbers, parentheses and punctuation at phrase boundaries. A short cue that looks correct does not establish that every longer mixed-script line behaves the same. Changing line wrapping can expose a different directional interaction.
If one renderer differs from another, record the application and version. Do not rewrite the stored text into reversed order solely to accommodate one broken display. Seek a supported correction or an agreed delivery representation and keep the source resource available.
Review meaning and keep the correction traceable
Have an appropriate language reviewer check that labels and numbers still belong to the intended phrase. Direction problems can change meaning even when every individual letter is legible. Review useful passages in context with speech and scene information.
Keep the original, corrected copy and concise explanation of the presentation change. Note which renderer was tested. If the recipient needs another caption format, verify the converted resource again rather than assuming invisible controls and alignment settings survive unchanged.
SocialVidDownloader does not repair, translate or export caption resources. This is a separate authorized text handoff. Choosing a different video quality or audio language cannot automatically resolve bidirectional display order in a supplied caption file.
Worked example
Illustrative cue review: an Arabic caption includes an English device name followed by a serial number, but the player visually attaches the number to the wrong phrase. The supplier preserves logical wording, reviews the necessary directional range and tests the corrected cue with a language reader in the receiving renderer. Timing remains unchanged.
Related guidance
Sources and verification
Reviewed 2026-10-08. Product behavior is limited to available source formats and provider access; it is not a promise that every public link works.