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Dapeng Li

PROFILE

Dapeng Li

Over six months, this developer enhanced video translation capabilities across Azure-Samples/cognitive-services-speech-sdk and related repositories. They delivered Python and C# client libraries, modernized codebases for .NET 8.0 and Linux compatibility, and integrated new API versions to support features like lip-sync, audio input, and Event Hub notifications. Their work included API specification updates, improved subtitle alignment, and expanded documentation in MicrosoftDocs/azure-ai-docs. Using C#, Python, and Azure cloud services, they focused on maintainability, cross-platform support, and developer experience. Their contributions addressed both backend and client-side needs, ensuring robust integration, streamlined workflows, and improved reliability for video translation solutions.

Overall Statistics

Feature vs Bugs

90%Features

Repository Contributions

12Total
Bugs
1
Commits
12
Features
9
Lines of code
16,155
Activity Months6

Your Network

5263 people

Work History

March 2026

1 Commits • 1 Features

Mar 1, 2026

March 2026: Delivered key API upgrade for the Video Translation Client in the cognitive-services-speech-sdk. Implemented support for API version 2026-03-01 with new WebVTT alignment and background volume parameters, plus enhanced error handling and refactored code structure for maintainability. Resolved quality and maintenance issues in the sample: BOM correction, build validation error fixes, and style check corrections; removed an unused Python file; README updated to reflect the new API version. This work improves compatibility with the latest API, accelerates developer integration, and reduces long-term maintenance risk.

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for Azure/azure-rest-api-specs focusing on the Video Translation API improvements.

September 2025

3 Commits • 1 Features

Sep 1, 2025

Performance-review-ready monthly summary for 2025-09 covering key feature delivery, bug fixes (if any), impact, and technical skills demonstrated for MicrosoftDocs/azure-ai-docs.

June 2025

5 Commits • 4 Features

Jun 1, 2025

June 2025 performance summary: Strengthened end-to-end video translation capabilities across two repositories with a GA API upgrade, richer customization, lip-sync and audio input support, and improved operational telemetry via Event Hub. Key work spanned the Azure-Samples/cognitive-services-speech-sdk and mikeharder/azure-rest-api-specs repos. Delivered GA upgrade to Video Translation (API v2025-05-20) with managed identity, centralized NuGet management, and new subtitle/export options; added lip-sync and audio file translation input contracts and sample usage updates; integrated Event Hub notifications in the sample tool; fixed a font-size handling bug to ensure API defaults apply. The GA API release enables configurable voice controls, subtitle styling, and audio inputs, driving a more engaging and scalable user experience.

December 2024

1 Commits • 1 Features

Dec 1, 2024

December 2024: Azure-Samples/cognitive-services-speech-sdk – Delivered modernization and Linux support for the C# video translation client, upgrading to .NET 8.0 and simplifying code for cross-platform readiness. This refactor removes unused CLI parsing and attributes, resulting in a cleaner, more maintainable code path with improved runtime compatibility on Linux. Commit cb2e26503a7540638f4dbc782276a5b963b12a90 implemented the changes, demonstrating a focused enhancement to the SDK sample.

November 2024

1 Commits • 1 Features

Nov 1, 2024

November 2024: Delivered Video Translation Service Python Client & CLI in the Azure-Samples/cognitive-services-speech-sdk repository. Implemented a Python client library and a command-line interface to interact with the Video Translation service, enabling creation of translations, management of translation iterations, and retrieval of operation status. Supports both direct video translation and WebVTT-based iteration workflows. Initial client sample code checked in (ae5ef1003a63a21f2f7c2351f54a796d1ee1dd0b) (#2655). This work simplifies integration, accelerates translation pipelines, and strengthens the SDK's developer experience for Python users.

Activity

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Quality Metrics

Correctness88.4%
Maintainability88.4%
Architecture86.6%
Performance80.0%
AI Usage23.4%

Skills & Technologies

Programming Languages

C#JSONMarkdownPythonTypespeccsharp

Technical Skills

.NET CoreAPI Client ConfigurationAPI Client DevelopmentAPI DevelopmentAPI IntegrationAPI SpecificationAzureBackend DevelopmentC#C# DevelopmentCloud ServicesCode ModernizationCommand-Line Interface (CLI)Configuration ManagementDocumentation

Repositories Contributed To

4 repos

Overview of all repositories you've contributed to across your timeline

Azure-Samples/cognitive-services-speech-sdk

Nov 2024 Mar 2026
4 Months active

Languages Used

PythonC#csharp

Technical Skills

API Client DevelopmentCommand-Line Interface (CLI)PythonSDK Development.NET CoreC#

MicrosoftDocs/azure-ai-docs

Sep 2025 Sep 2025
1 Month active

Languages Used

Markdown

Technical Skills

Documentation

mikeharder/azure-rest-api-specs

Jun 2025 Jun 2025
1 Month active

Languages Used

Typespec

Technical Skills

API SpecificationCloud ServicesVideo Processing

Azure/azure-rest-api-specs

Feb 2026 Feb 2026
1 Month active

Languages Used

JSON

Technical Skills

API DevelopmentAzureCloud ServicesVideo Processing