No lip-sync feature was provided, so the dubbing could not automatically match the original Hindi mouth movements.
What was measured
Lip Sync Accuracy
Does the dubbed audio visually match lip movements in the original video?
decisive for this rankingtransformation
If the dubbed audio does not match the on-screen mouth movements, the core purpose of video translation with lip sync has failed. (3 of 3 judges)
What was given, what came back
Test input: Hindi vlog-style talking head (Hindi → English) · video · group: video-translation-voice-clone-lip-sync
Input — what we sent
Free copyright stock videos images and music publer com online video cutter com.mp4
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 casual Hindi/Hinglish talking-head or vlog-style creator video translated into English to stress informal language handling, slang, and natural-sounding voice cloning on real creator content.
Output — unretouched
ElevenLabs — Free Copyright Stock Videos Images And Music.publer.com (online-video-cutter.com)_en_dubbed.mp4
Also checked on this input — same tool, 9 other criteria
Output Quality & Export◐ MixedAudio export is available but limited, so the result is downloadable yet not positioned as a fully unrestricted production export.Output Quality & Export◐ MixedAudio export was supported, but the free plan imposed limitations, so the output was exportable yet not fully unrestricted or production-ready by itself.Output Quality & Export◐ MixedAudio export was available, but only with limits, so the export path existed without being fully open-ended or production-grade on the free plan.Output Quality & Export◐ MixedSupports audio export in the free plan, but with limits; higher quality and longer usage require paid access.Output Quality & Export✗ FailedThe exported dub is not fully production-ready because the last part of the audio is missing.Translation Accuracy✓ WorkedProduces an accurate Hindi translation of the English fitness narration, preserving the intended meaning well enough for instructions.Voice Cloning Quality✓ WorkedThe Spanish dubbed voice was reported as excellent, clear, professional, and highly natural sounding, which fit the educational tone well.Voice Cloning Quality◐ MixedGenerates a very natural and expressive English voice, but it sounds more polished and formal than the original casual vlog style, so the speaker’s personality is not fully preserved.Voice Cloning Quality✓ WorkedThe dubbed voice was reported as very high quality: natural, human-like, expressive, and especially strong for energetic fitness instruction delivery.
Provenance
- Observation
- 19111e13-9d4e-4f30-8535-be7a2d3b92c9
- Evidence run
- 9feca581-b454-4bda-a610-a646cd0092f0
- Study
- Translate Videos with Voice Cloning and Lip Sync Using AI
- Research task
- 86b96dfpf
- Tested at
- Jun 24, 2026
- Source
- first-party
- Evidence state
- verified
- Proof shown
- input + output shown
- 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: "elevenlabs",
scenario: "video-translation-voice-clone-lip-sync"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 5 other tools
measured on Lip Sync Accuracy
D-ID✗ FailedLip sync worked well on the AI avatar, but it did not apply to the original video.Dubverse✓ WorkedAchieves more precise lip sync than the other tested inputs.Heygen◐ MixedLip sync is acceptable, but it weakens on longer sentences.Rask AI◐ MixedPerforms better on slower, clearer speech, but still shows slight lip-movement delays in some frames.Sync Labs◐ MixedLip sync worked overall, but it struggled during expressive facial movements and fast speech.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com