源格式
MP4 is a widely supported media container, commonly carrying H.264 or H.265 video and AAC audio.
转换器 MP4 到 MKV
在线将 MP4 视频转换为 MKV。免费、快速，无需注册。
也可将文件拖放到此处，单个文件最大 1 GB。
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转换中
可下载文件: 0
输入格式
MP4 video
MP4 是手机、相机、浏览器、社交应用程序和下载最常见的视频容器。它具有广泛的兼容性，但某些工作流程需要 MKV 以获得更广泛的音轨、字幕或存档支持。
输出格式
MKV 视频
MKV 是一种灵活的视频容器，常用于高质量视频、字幕轨、多个音流和媒体库归档。当您的播放器、编辑器或存储工作流程需要 Matroska 视频时，请将 MP4 转换为 MKV。
如何在线将 MP4 转换为 MKV
当您需要用于播放、归档、字幕工作流程或媒体库的 Matroska 视频文件时，请使用此 MP4 到 MKV 转换器。上传您的 MP4，选择 MKV 作为输出，并在处理完成后下载转换后的视频。
转换器在您的浏览器中工作，无需帐户，也无需安装软件。支持最大 1 GB 的文件，上传的文件将进行安全处理以用于转换流程。
- 1 Upload your MP4 video file.
- 2 选择 MKV 作为输出格式。
- 3 如果需要调整编解码器、质量、比特率、分辨率或音频选项，请打开设置。
- 4 点击转换以开始 MP4 到 MKV 的转换。
- 5 处理完成后下载您的 MKV 视频。
如果您需要用于手机、浏览器或社交上传的最通用可播放文件，MP4 通常是更安全的目标。如果您需要灵活的存档或播放器友好的容器，MKV 可能更适合。
MP4 到 MKV 常见问题
这个 MP4 转 MKV 转换器是免费的吗？
是的。Convertr 允许您免费在线将 MP4 转换为 MKV，无需注册、无水印且无需安装软件。
为什么要将 MP4 转换为 MKV？
MKV 有助于媒体库、字幕工作流程、多轨视频文件和偏爱 Matroska 容器的播放器。当兼容性对这些工作流程至关重要时，可将 MP4 转换为 MKV。
我可以将大型 MP4 文件转换为 MKV 吗？
是的。每个文件最大可上传 1 GB 的 MP4 视频。这有助于处理更长的录音、下载、导出和媒体库文件。
MP4 到 MKV 会降低视频质量吗？
质量取决于转换设置和源文件。当保留细节比创建更小的输出文件更重要时，请使用更高的质量设置。
Are my MP4 files private?
Files are processed securely for conversion and automatically deleted after the conversion flow. You do not need to create an account.
Related video conversion tools
当您需要另一个常见容器、MP4 导出或兼容性工作流程时，请使用这些专注的视频转换器。
What happens when MP4 becomes MKV
目标格式
MKV is a flexible Matroska container that can carry multiple audio, video, and subtitle tracks.
什么变化
The MP4 container is read and the selected video and audio streams are written into a MKV container.
Codecs may be transcoded even when the visible resolution and duration stay the same.
- 保留了哪些内容
- Duration, frame order, and visible dimensions are preserved unless you select trimming, frame-rate, or resolution changes.
- What may be lost
- Extra subtitle, attachment, chapter, or alternate audio tracks may be omitted when the target container or selected settings do not support them.
- Codec and quality implications
- Container names do not guarantee a codec. Quality and compatibility depend on the selected video codec, audio codec, bitrate, frame rate, and resolution.
- Realistic limitations
- A valid MP4 extension does not guarantee that every codec inside the container is decodable. Corrupt, encrypted, or unusual streams can fail.
转型步骤
- Upload a MP4 file no larger than 1 GB.
- Confirm that MKV is selected as the target.
- Open settings only if you need to change codec, quality, bitrate, frame rate, resolution, or audio behavior.
- Start the conversion. A healthy compatible worker begins processing immediately.
- Download the MKV file and check the result before deleting your source.
麻烦解决
- The MP4 file is rejected or will not open.
- Confirm that the file is not empty, password-protected, or corrupt and that its real format matches the extension.
- The MKV file is larger than expected.
- Choose a more efficient codec or lower quality setting when available. Lossless and uncompressed targets are often larger by design.
- The result has no sound or will not play.
- Try a broadly supported target codec and verify that the source contains a decodable audio stream.
隐私和文件保留
Uploads and converted files are processed automatically and irreversibly deleted within 24 hours. You can delete them sooner with the delete control. Convertr does not read, mine, sell, or manually review file contents.
Read the privacy policy