# Video Narration on Ego4D Narration Stream (Offline)

Source: [Video Narration on Ego4D Narration Stream (Offline)](<https://www.sota2.com/research/sota/video-narration-on-ego4d-narration-stream-offline>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-06-17T07:36:02.185Z

Evaluation of models performing Video Narration on the Ego4D Narration Stream (Offline) dataset, measured using metrics such as Perplexity (PPL), Time Difference (TimeDiff), Fluency, and Token Accuracy (TokAcc).

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

| Scope | Recorded value |
| --- | --- |
| Task | Video Narration |
| Dataset (including any stated split) | Ego4D Narration Stream (Offline) |
| Metric | Perplexity (PPL) |
| Unit | SCALAR |
| Direction | Lower is better |
| Results loaded | 6 of 6 |
| Coverage | All results currently returned for this benchmark |

Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol.

## Metrics

- [Perplexity (PPL)](<https://www.sota2.com/research/sota/video-narration-on-ego4d-narration-stream-offline.md?metric=Perplexity%20(PPL)>): Lower is better; unit: SCALAR.

- [Time Difference (TimeDiff)](<https://www.sota2.com/research/sota/video-narration-on-ego4d-narration-stream-offline.md?metric=Time%20Difference%20(TimeDiff)>): Lower is better; unit: TIME.

- [Fluency](<https://www.sota2.com/research/sota/video-narration-on-ego4d-narration-stream-offline.md?metric=Fluency>): Higher is better; unit: PERCENT.

- [Token Accuracy (TokAcc)](<https://www.sota2.com/research/sota/video-narration-on-ego4d-narration-stream-offline.md?metric=Token%20Accuracy%20(TokAcc)>): Higher is better; unit: PERCENT.

## Recorded results

| Method | Perplexity (PPL) | Result date | Report paper |
| --- | --- | --- | --- |
| LiveStarPro | 1.95 | Not recorded | 6a322a4ad33dfb23e783ec8b |
| LiveStar | 1.97 | Not recorded | 6a322a4ad33dfb23e783ec8b |
| LION-FS | 2.09 | Not recorded | 6a322a4ad33dfb23e783ec8b |
| VideoLLM-MoD | 2.41 | Not recorded | 6a322a4ad33dfb23e783ec8b |
| VideoLLM-online | 2.43 | Not recorded | 6a322a4ad33dfb23e783ec8b |
| MMDuet | 4.51 | Not recorded | 6a322a4ad33dfb23e783ec8b |

### LiveStarPro

Perplexity (PPL): 1.95. Result ID: 6a324e49fbc373592c2f8638.

[Reporting paper](<https://www.sota2.com/research/paper/6a322a4ad33dfb23e783ec8b.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a322a4ad33dfb23e783ec8b.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### LiveStar

Perplexity (PPL): 1.97. Result ID: 6a324e49fbc373592c2f8637.

[Reporting paper](<https://www.sota2.com/research/paper/6a322a4ad33dfb23e783ec8b.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a322a4ad33dfb23e783ec8b.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### LION-FS

Perplexity (PPL): 2.09. Result ID: 6a324e49fbc373592c2f8635.

[Reporting paper](<https://www.sota2.com/research/paper/6a322a4ad33dfb23e783ec8b.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa774c1e209131cea725d7.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### VideoLLM-MoD

Perplexity (PPL): 2.41. Result ID: 6a324e49fbc373592c2f8634.

[Reporting paper](<https://www.sota2.com/research/paper/6a322a4ad33dfb23e783ec8b.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa74a01e209131cea62b99.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### VideoLLM-online

Perplexity (PPL): 2.43. Result ID: 6a324e49fbc373592c2f8633.

[Reporting paper](<https://www.sota2.com/research/paper/6a322a4ad33dfb23e783ec8b.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa73a71e209131cea5db14.md>)

[Implementation](<https://www.sota2.com/showlab.github.io/videollm-online>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### MMDuet

Perplexity (PPL): 4.51. Result ID: 6a324e49fbc373592c2f8636.

[Reporting paper](<https://www.sota2.com/research/paper/6a322a4ad33dfb23e783ec8b.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa75e81e209131cea6a921.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

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