如何免費將MP4在線轉換為WAV

MP4 is quite a common video format that people use in daily life. At the same time, WAV is also a great option to contain lossless audio. But sometimes, you may want to convert MP4 to WAV for listening on your devices. In this situation, what you need is a professional converter that can extract the audio part from video without losing the sound quality.

So today, we are going to compare MP4 and WAV in detail and introduce to you the best MP4 to WAV Converters both online and offline.

第1部分。MP4與WAV

老實說，MP4和WAV之間沒有什麼可比較的。畢竟，它們是在不同情況下使用的兩種不同格式，一種用於存儲視頻，另一種用於保存音頻。但它們都是文件類型，並且可以包含數字聲音。基於此，下表列出了它們之間的一些差異。

	MP4	WAV
包含	視頻，音頻和字幕	僅音頻
文件擴展名	.mp4，.m4a，.m4p，.m4b，.m4r和.m4v	.wav和.wave
由開發	國際標準化組織	IBM和Microsoft
物產	壓縮且有損（大多數時間）	無壓縮且無損

第2部分。最佳MP4到WAV轉換器在線

現在，您已經了解了這兩種格式的優點。是時候找到一個可以滿足您所有轉換需求的有用的MP4到WAV轉換器了。

Here, we recommend you a web-based converting tool named FVC Free Audio Converter, which can help you easily transform MP4 video files to WAV online for free. The best part of this online converter is that you can run it on any operating systems, such as Windows and Mac OS, without downloading a large software package. All you need is a browser and stable network. Then you can change MP4 videos like MVs and talk shows to WAV files without any hassle.

請按照以下步驟操作，您也可以像專業人士一樣進行轉換。

Step 1. Click the link above to visit the official website of FVC Free Audio Converter. Click the Add Files to Convert button. And then you need to download and install a simple launcher.

Step 2. After the installation, the Open window will pop up immediately. Then you can select the MP4 video you want to convert.

Step 3. Because what you want is a WAV file, so you need to change the output format to WAV. Click Convert and find a saving destination for your WAV file.

Step 4. Wait for a while, and the converted file will be saved to your computer automatically.

第3部分。通過Audacity將MP4轉換為WAV

Many people ask how to convert MP4 to WAV with Audacity. So, we did a research and found that this method might be a little complex. Because Audacity cannot open MP4 files directly without the optional FFmpeg library. But luckily, we solved that problem by using the recording feature of Audacity.

對於那些不熟悉Audacity的人，它是由志願者開發的開源和跨平台音頻免費軟件。通常，它用於編輯和錄製多軌音頻。要使用Audacity從MP4導出WAV文件，您需要執行以下步驟。

Step 1. Find the MP4 video file that you want to convert and play it with the media player on your computer. To make sure that no content will be left out, please pause the video once you open it and then rewind it to the beginning.

Step 2. Now you can launch Audacity. First, you need to mute the microphone by sliding the recording volume to 0. Then adjust the volume of system sound as you like. Click the Record button.

Step 3. Go back to the media player and play the MP4 video. Audacity will record the audio part of video. Once the MP4 video is over, you can close the media player.

Step 4. Back to Audacity and click the Stop icon. After that, please navigate to File in the top menu bar. Find Export and then choose Export as WAV.

Step 5. Please name this audio file before saving it to your computer.

第4部分。將MP4轉換為WAV的常見問題解答

結論

Including the methods that we mentioned in FAQs, now you have 4 ways to change MP4 to WAV. If you only want to use a time-saving converting tool to convert audio, FVC Free Audio Converter will do a great job without extra trouble.

如果您覺得這篇文章有幫助，可以與您的朋友分享。請隨時留下您的意見。