The educational export stays intact and legible, but it is vertically letterboxed with black side bars, carries a 'TRANSLATED BY RASK' watermark, and the free tier does not provide native downloads.
What was measured
Output Quality & Export
Is the final exported video clean, downloadable, and production-ready, and are there watermarks or credit restrictions?
context, not decisivetransformation
A clean export and watermark-free download matter for usability, but they do not determine whether the tool can translate, clone voice, and lip-sync well. (3 of 3 judges)
What was given, what came back
Test input: Educational airport conversation short (English → Spanish) · video · group: video-translation-voice-clone-lip-sync
Input — what we sent
Input not captured
This run recorded no prompt or input file for the test, so we cannot show you what produced the result below. Capture gaps are tracked, not hidden.
A structured educational/conversation-style English short video used to test translation into Spanish with clear narration, steadier pacing, and easier lip-sync alignment than the other scenarios.
Why this input is hard
- · Structured speech translation accuracy
- · English-to-Spanish narration quality
- · Longer-phrase lip-sync consistency
- · Clear voice rendering for informational content
- · Export/download reliability in a simple speaking scenario
Output — unretouched
Also checked on this input — same tool, 2 other criteria
Lip Sync Accuracy✗ FailedAt t=4.0s the input and output are frame-for-frame identical, with the same mouth shape, so no lip sync or face regeneration is visible on the free tier.Translation Accuracy✗ FailedThe English→Spanish banana-ripeness export leaves the diagram labels in English — 'Unripe', 'Ripe', 'Overripe', and 'Rotten' — instead of translating the on-screen text.
Provenance
- Observation
- a7a04b8e-3bc9-4bf7-9ee5-4327725b336c
- Evidence run
- ec1dd100-6af8-4f49-8f19-b78492702b14
- Study
- Translate Videos with Voice Cloning and Lip Sync Using AI
- Research task
- 86b96dfpf
- Tested at
- not recorded
- Source
- first-party
- Evidence state
- verified
- Proof shown
- output only
- Cost / latency
- not captured
- Repeat run
- not captured
- Tester
- not captured
The last three rows are honest blanks, not placeholders — our capture has no field for them yet.
Query this
get_evidence({
tool: "rask-ai",
scenario: "video-translation-voice-clone-lip-sync"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 3 other tools
measured on Output Quality & Export
Akool✓ WorkedThe export preserved the source's 360×640 resolution and showed no corruption or color glitches.Dubverse✓ WorkedThe export process is smooth, subtitles align well when enabled, and the final rendering quality is described as good.ElevenLabs✗ FailedThe exported Spanish educational video is not clean because the output carries an ElevenLabs dubbing watermark at the bottom.
This evidence is published in
From the same study (page rebuilt from a later run)
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com