HandBrake vs Zamzar API

HandBrake is a free, open-source video transcoder for converting video from nearly any format. It can produce MP4, MKV and WebM files using codecs such as H.264, H.265, MPEG-4, MPEG-2, VP8, VP9, AV1, Theora and FFV1. Batch conversion and hardware acceleration are supported, and output resolution can reach 4K. HandBrake runs on Windows, macOS and Linux; the listed macOS requirement is version 10.13 or later. The listed release is HandBrake 1.11.2, and the project says volunteers build it. The tool's stated scope is video conversion, not audio extraction. Community and documentation resources are available, along with a GitHub repository, a privacy policy and a way to report problems. HandBrake is free to use, with no paid plan listed.

Zamzar API is a REST-based HTTP service for adding file conversion to mobile, web, or desktop applications. It supports more than 1,100 conversion types across documents, video, images, audio, eBooks, CAD, 3D, and compressed files. Files can come from a user's machine or be reachable through HTTP, FTP, SFTP, or Amazon S3. Zamzar says its cloud service can handle demand from one file to 10,000. Developers can use official Java, PHP, and Python SDKs, plus code samples for C#, cURL, Node.js, and other languages. The free Test plan costs nothing, requires no card, and includes 100 credits, a 1 MB maximum file size, one-day file storage, and a three-day support response. Paid plans start at $25 /month. Successful conversions use at least one credit, and unused monthly credits do not roll over. Zamzar describes the API as a conversion service, not a CDN; converted files should be retrieved through the API. Accounts include free sandbox testing subject to file-size and job-count limits.