Choose the actual placement first, then agree aspect ratio, length, safe zones and captions. A platform name alone does not define an export.
How to use this specification guide
Last checked: October 30, 2026. Length recommendations below are Solivo editorial starting points unless explicitly identified as a platform rule. Ad and organic placements can differ. Safe zones depend on interface overlays; confirm the current preview before export.
TikTok and YouTube rules are linked to their official guidance. Xiaohongshu and WeChat entries are preparation guidance, not independently verified numerical upload limits. The event venue supplies its own playback specification.
TikTok
TikTok: production and export planning
Decision
Specification or planning guidance
Aspect ratio
9:16 recommended for vertical; 1:1 and 16:9 supported in the referenced ad specification.
Length
Editorial starting point: 15–30 seconds for one message. Check the exact organic, Spark or Non-Spark placement.
Safe zone
Use the current TikTok safe-zone file for the placement and caption length. UI and anchor overlays vary.
Captions
Plan readable burned-in captions if required; check placement and native caption behavior.
YouTube and Shorts: production and export planning
Decision
Specification or planning guidance
Aspect ratio
16:9 for a conventional horizontal film; square or vertical for eligible Shorts.
Length
Editorial starting point: 30–60 seconds for a promo, 1–3 minutes for an explanation. Eligible square or vertical Shorts can be up to 3 minutes under the cited rule.
Safe zone
Check the difference between a Shorts interface and a conventional player; keep essential detail clear in both.
Captions
Agree caption files or burned-in text explicitly. Check subtitle language and automatic-caption accuracy.
A vertical master is a useful starting point; confirm the actual post or ad placement in the publishing account.
Length
Editorial starting point: 15–30 seconds for one product message, not a verified upload limit.
Safe zone
Check the current app preview for title, controls and comment overlays. Avoid fixed universal pixel margins.
Captions
Agree Chinese, English or bilingual text and keep small product labels legible.
WeChat and Channels
WeChat and Channels: production and export planning
Decision
Specification or planning guidance
Aspect ratio
Specify Channels, a feed share or another placement before choosing 9:16, 16:9 or 1:1.
Length
Editorial starting point: 15–60 seconds for an introduction, not a verified upload limit.
Safe zone
Preview in the actual WeChat placement and keep faces, logos and captions clear of current controls.
Captions
Specify spoken language and subtitle language separately; check on-device readability.
Event screens
Event screens: production and export planning
Decision
Specification or planning guidance
Aspect ratio
Use the venue’s exact pixel dimensions and ratio. Do not assume 16:9.
Length
Agree with the running order, loop duration and screen operator.
Safe zone
Request the venue template, playback file requirements and visible screen area. Allow for viewing distance.
Captions
If sound is unavailable, make the message understandable visually and size text for the room.
One main film, multiple export decisions
A shorter edit, a different aspect ratio and a translated version are separate decisions. A single-video order includes one chosen format. List additional versions before production; the Campaign Package has separately defined quantities and an agreed distribution across channels.
We use Google Analytics and PostHog to see which pages and films help visitors decide, including cookies and anonymised session recordings on public pages. Signed-in project pages are never recorded.
