MP4 到 MP3转换器 — 快速免费
Extract audio from MP4 videos and convert to high-quality MP3 format.
将您的文件拖放到此处，或单击浏览
支持所有主要格式
How MP4 to MP3 Conversion Works
Converting an MP4 video file to MP3 extracts the audio stream from the container and saves it as a standalone audio file, discarding the video track entirely. MP4 is a multimedia container that can hold video (H.264, H.265), audio (AAC, MP3), and subtitle streams simultaneously. MP3 is a dedicated audio format using the MPEG-1 Audio Layer III lossy compression algorithm, widely supported across all devices and media players. During extraction, the existing audio codec is either copied directly (stream copy) when it is already MP3, or re-encoded from AAC to MP3 using the LAME encoder at the selected bitrate. Common output bitrates are 128 kbps (voice or podcast quality), 192 kbps (standard music), and 320 kbps (near-lossless music). 1converter uses FFmpeg for this conversion, which ensures accurate audio sync, correct sample rate handling, and ID3v2 metadata preservation where present in the source file.
如何将 MP4 转换为 MP3
按照以下简单步骤，几秒钟内将 MP4 文件转换为 MP3 格式
步骤 1
Upload your MP4 video file
步骤 2
Select MP3 as the output format
步骤 3
Choose audio quality (bitrate) if desired
步骤 4
Click "Convert" to extract audio
步骤 5
Download your MP3 file
平均转换时间: 不到2分钟
转换可视化预览
源文件
转换中...
输出文件
此可视化展示了从 MP4 到 MP3 格式的典型转换过程，包括预期的大小缩减和质量保持。
选择转换质量
为您的 MP4 到 MP3 转换找到质量与文件大小的完美平衡
低质量
文件最小，基础质量
中等质量
大小与质量平衡
高质量
文件更大，质量出色
最高质量
文件最大，最佳质量
tips_and_updates质量选择技巧
何时使用低/中质量：
- •网页上传和社交媒体分享
- •有大小限制的电子邮件附件
- •快速预览和缩略图
何时使用高/最高质量：
- •专业打印和出版
- •归档和长期存储
- •当质量比大小更重要时
音频提示：音乐推荐使用高质量（320kbps）。中等质量适合播客和语音录音。
为什么要将 MP4 转换为 MP3？
了解将 MP4 文件转换为 MP3 格式的优势
Extract audio only
Remove video to save space
Smaller file size
MP3 files are much smaller than videos
Universal compatibility
Play on any device or player
Adjustable bitrate
Choose between file size and audio quality
Fast extraction
Get your MP3 in seconds
附加功能
热门使用场景
专业人士如何使用我们的 MP4 到 MP3 转换器
Extracting music from music videos
快速轻松地将 MP4 转换为 MP3。
Creating podcasts from video interviews
快速轻松地将 MP4 转换为 MP3。
Saving audio from webinars and lectures
快速轻松地将 MP4 转换为 MP3。
Building music playlists
快速轻松地将 MP4 转换为 MP3。
Audio editing and production
快速轻松地将 MP4 转换为 MP3。
专业人士信赖
MP4 vs MP3
MP4 → MP3
MP4
check优点
- checkBest compatibility
- checkGood compression
- checkHD support
close缺点
- closeLossy compression
- closeCan be large for HD
MP3
check优点
- checkUniversal compatibility
- checkVery small files
- checkGood quality
close缺点
- closeLossy compression
- closeNot lossless
MP4 → MP3
MP3 offers smaller file sizes than MP4 and runs on every major platform. Convert your existing MP4 files when the target application, platform, or workflow requires MP3.
Frequently Asked Questions
Everything you need to know about converting MP4 to MP3
Still Have Questions?
Our support team is here to help you with any questions about MP4 to MP3 conversion.
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