源格式
WEBM is a web-focused container commonly carrying VP8, VP9, or AV1 video with Opus or Vorbis audio.
WebM 转 MP4 在线转换器
在线把 WebM 视频转换为 MP4。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。
已选择的文件
全部设置为:
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Document conversions are best-effort. Complex layouts, fonts, comments, tracked changes, and form fields may change in the output.
Structured data conversions preserve the data where possible, but key ordering, comments, quoting, and XML-specific details may change in the output.
转换中
可下载文件: 0
输入格式
WEBM
WebM 是一种网络视频容器，常用于浏览器播放、屏幕录制和轻量在线视频。它通常包含 VP8、VP9、AV1、Vorbis 或 Opus 流。
输出格式
MP4
MP4 是手机、浏览器、智能电视、编辑应用、消息工具和社交媒体上传中支持最广泛的视频容器。
如何将 WEBM 转 MP4
当 WebM 文件无法在所需应用中上传、导入或播放时，请使用这个 WEBM 转 MP4 转换器。它会生成更容易在 iPhone、Android、Windows、macOS、电视、视频编辑器和社交平台上分享的 MP4 文件。
- 1 上传你的 WEBM 视频文件。
- 2 如果尚未选择，请将输出格式设为 MP4。
- 3 点击转换，开始 WEBM 转 MP4。
- 4 处理完成后下载转换好的 MP4 文件。
开始转换前，你还可以调整分辨率、视频编码、比特率和质量等设置。
WEBM 转 MP4 常见问题
为什么要将 WEBM 转换为 MP4？
WEBM 在现代浏览器中表现良好，但 MP4 被更多手机、电视、应用、编辑工具和社交平台接受。将 WEBM 转换为 MP4 可让视频更容易播放、分享和编辑。
这个 WEBM 转 MP4 转换器免费吗？
是的。Convertr 可免费在线将 WEBM 视频转换为 MP4，无需注册、无需安装软件，也不会添加水印。
将 WEBM 转换为 MP4 会提升兼容性吗？
会。采用 H264 视频和 AAC 音频的 MP4 是支持最广泛的视频组合之一，因此通常是播放和分享的最佳输出格式。
我上传的 WEBM 文件安全吗？
您的文件会安全传输，用于转换处理，并在转换流程结束后自动删除。
相关视频转换器
还需要其他 MP4 工作流？可以试试这些常用视频转换。
What happens when WEBM becomes MP4
目标格式
MP4 is a widely supported media container, commonly carrying H.264 or H.265 video and AAC audio.
什么变化
The WEBM container is read and the selected video and audio streams are written into a MP4 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 WEBM 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 WEBM file no larger than 1 GB.
- Confirm that MP4 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 MP4 file and check the result before deleting your source.
麻烦解决
- The WEBM 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 MP4 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