ViralMint is a free multi-platform video exporter that converts a single short into optimized formats for TikTok, Instagram, and YouTube in one ZIP.
Most editors require you to export each aspect ratio separately — open the file, change the canvas, re-render, repeat per platform. ViralMint's multi-platform export takes one video and one platform list, computes the unique aspect ratios needed (TikTok + YouTube Shorts both = 9:16 — only one render), and returns a ZIP with one mp4 per distinct aspect plus a platform→aspect map so you know which file goes where.
When you export to 16:9 once, ViralMint caches the result in video_path_landscape. The next time you export that video to a 16:9-needing platform — even from a different bundle — it reuses the cached file instead of re-encoding. For creators who post the same clip to 5 platforms over a day, that's hours of save FFmpeg time across a year.
TikTok, YouTube Shorts, Reels, Instagram Stories, Instagram Feed, LinkedIn, YouTube, Twitter / X, Shorts, plus the underlying 9:16 / 1:1 / 16:9 / 4:5 aspect tags. Default platform list is [TikTok, YouTube, Instagram Feed] — the most common three. Unknown platform names raise an explicit error rather than silently producing the wrong aspect.
Open the Videos page and click the video you want to ship. Multi-Platform Export works on any video produced by Smart Video, AI Video, Clip Studio, or an imported clip — anything in your ViralMint library.
Click Export → Multi-Platform. Toggle the platforms you want: TikTok, Instagram Feed, YouTube, LinkedIn, Reels, Stories, Shorts, Twitter. Default is the three most-common cross-posts (TikTok + YouTube + Instagram Feed). Pick a fill method for aspect conversion: blur_fill (default — blurred backdrop), letterbox (black bars), or crop (lossy fit).
ViralMint maps each platform to its preferred aspect ratio, dedupes (TikTok and YouTube Shorts both = 9:16 — only one render), then runs FFmpeg in parallel for each distinct aspect. Aspects you've previously exported are pulled from cache instead of re-encoded. Typical wall-clock: 30–90 seconds for three distinct aspects on a typical laptop.
ViralMint writes the bundle to your output folder as {video_id}_platforms.zip. Inside: one mp4 per distinct aspect with platform-tagged filenames (e.g. {title}_tiktok_9x16.mp4, {title}_youtube_16x9.mp4). Drag the files into each platform's upload UI as-is.
Last updated May 2026
| Capability | OpusClip | Vizard | Submagic | ViralMint |
|---|---|---|---|---|
| Pricing for multi-aspect export | Included on paid tiers | Included on paid tiers | Included on paid tiers | Free (desktop app) |
| Number of platform mappings | 6+ social platforms | 9+ social platforms | 5+ social platforms | 10 (TikTok, YouTube Shorts/Reels/Stories/Feed, LinkedIn, YouTube long, Twitter, …) |
| Aspect-dedupe (avoid double-encoding shared aspects) | Unclear | Unclear | No | Yes (TikTok + Shorts share 9:16 → one render) |
| Cached aspect conversions across exports | No | No | No | Yes (16:9 re-encode reused on next call) |
| Platform-tagged filenames in output | Yes | Yes | Manual | Yes — {title}_{platform}_{aspect}.mp4 |
| Fill methods for aspect conversion | Letterbox / blur | Letterbox / blur / crop | Letterbox / blur | blur_fill / letterbox / crop |
| Open source | No | No | No | Yes (AGPL-3.0) |
highlighted column = clearer fit for that capability. Tied capabilities are left unmarked.
Ten platform names, mapping to three distinct aspect ratios: TikTok, YouTube Shorts, Reels, Instagram Stories → 9:16. Instagram Feed, LinkedIn → 1:1. YouTube, Twitter, X → 16:9. Unknown platform names raise an explicit error so a typo can't silently produce the wrong aspect.
Aspect conversion has three choices: blur_fill (default — a blurred copy of the source fills the letterbox area, preserves the original framing), letterbox (plain black bars in the unused area), and crop (zoom-and-trim to fit the new aspect, lossy but no bars). blur_fill is the modern social-media default and what most viral Shorts use; letterbox is film-festival aesthetic; crop is for when you absolutely cannot show bars (Instagram Feed product shots).
No. ViralMint dedupes shared aspects before rendering — if you export to TikTok + YouTube Shorts + Reels + Stories, all four want 9:16, so only one render happens. The resulting ZIP still includes one file per platform (with platform-tagged names) but they all point at the same underlying video. The dedupe also extends across separate export calls: a 16:9 conversion from a prior export is reused on the next.
Yes — the underlying export-bundle endpoint accepts a target_aspects list directly. The Multi-Platform Export tool is a UI on top of that, mapping platform names to aspects. If you need 4:5 or some custom ratio, drop down to the raw Export action on a generated video and pass the aspect directly.
Aspect conversion is FFmpeg's blur_fill (or letterbox / crop) filter. Wall-clock depends on source length and CPU: a 60-second source produces a 9:16 export in 5–15 seconds, three aspects in 20–60 seconds total. Cached aspects from prior exports are instant — just copied into the ZIP.
No — auto-upload was built and then removed. ViralMint produces the files; you upload manually to each platform. This is deliberate: platform upload-API rules and TOS shift constantly, and a tool that auto-uploads is one rate-limit change away from breaking on every user simultaneously. Posting manually with our drafted titles, descriptions, tags, and TikTok captions takes about 30 seconds per platform.
Pair it with the Viral Clip Extractor (extract 10 clips from a long video) or Smart Video / AI Video (generate one short from a topic) — those produce the source, this ships it. Through the MCP tool surface, repurpose_for_platforms is a single tool call that takes a video_id and a platform list; the agent can chain it directly after a generation step.
Not in the UI yet — the platform→aspect map is currently hard-coded (TikTok → 9:16 etc.). If you want a different mapping for a non-standard niche, drop to the export-bundle endpoint and pass aspect ratios directly. We may surface a custom-mapping editor in the desktop UI later.
The Multi-Platform Video Export ships inside the free ViralMint desktop app — no subscription, no watermark, no per-minute cap. Download once, use on as many videos as you want.
