4個最佳免費MP4到MKV轉換器，可在單擊內將MP4文件轉換為MKV

如果要在MP4視頻中添加字幕，最好將MP4轉換為MKV。 MKV是Matroska視頻文件，支持無限數量的音頻，圖片和字幕軌道。將MP4轉換為MKV文件並不難。您可以從本文中了解有關4種最佳方法的更多詳細信息。此外，這是添加字幕和輕鬆編輯視頻的終極方法。

第1部分：將MP4轉換為MKV的3種最佳方法

頁首1：如何免費在線將MP4轉換為MKV

When you want to convert MP4 files to MKV online, FVC Free Online Video Converter is a versatile video converter to convert most of the video formats, such as MP4, MKV and more for free. It also enables you to tweak the video and audio settings for the output. Moreover, it supports batch conversion that you can convert a bunch of videos or audio with ease.

1. 1.將MP4轉換為MKV，AVI，FLV和其他更多媒體格式/預設。
2. 2.調整視頻編解碼器，幀速率，視頻格式以及視頻格式。
3. 3.轉換很簡單，沒有水印或其他限制。
4. 4.提供一個簡單的界面，可在3個步驟中將MP4轉換為MKV文件。

Step 1. Go to FVC Free Online Video Converter, you can click the Add Files to Convert button to add the MP4 file into the program. If it is the first time you use the online MP4 to MKV converter, you should download the installer beforehand.

Step 2. Once you have imported the MP4 videos, you can choose the MKV option as the output format. You can click the Gear icon to tweak the video and audio settings, such as the video encoder, frame rate, resolution, and more other settings.

Step 3. After that, you can click the Convert button to convert MP4 to MKV with the desired quality. It takes a few seconds to get the desired MKV on your computer. You can preview the output video before saving it to your computer accordingly.

頂部2：如何使用VLC Media Player將MP4轉換為MKV

VLC Media Player is more than a media player for MKV files, it also has its own set of codecs for most of the video and audio formats. If you do not have an MKV as output, you can also search for some plugins to convert MP4 to MKV files with VLC as below.

Step 1. Launch the VLC Media Player and launch the program on your computer. Click the Media menu and choose the Convert/Save... option to import the MP4 file you need to convert.

Step 2. In the Open Media window, click the File option followed by the Add icon. Select the MP4 file in your folder. After that, choose the Convert button from the Convert/Save dropdown menu.

Step 3. After that, you can choose the MKV as the output format. Click the Browse option to set a destination for the converted file. Then choose the Start option to convert MP4 to MKV.

頁首3：如何從URL將MP4轉換為MKV

是否可以將在線MP4直接轉換為MKV？ AConvert有一系列視頻到MKV的在線轉換器，您可以輸入視頻的URL以轉換為所需的格式。當然，它也使您能夠調整視頻設置。

Step 1. Go to aconvert.com on any of your browser, you can choose the Convert menu from the upper left corner. Click the arrow to select the Online File option from the drop down list.

Step 2. Click the Target format as MKV format. Then click the Options to adjust the video size, video bitrate, frame rate, video aspect and more other settings for converting MP4 to MKV.

Step 3. After that, click the Convert Now! button to start batch conversion. The output files will be listed in the Conversion Results section that you can download it to your computer.

第2部分：將MP4轉換為MKV的終極方法

有沒有一種方法可以直接將帶字幕的MP4轉換為MKV？ FVC Video Converter Ultimate是一款終極MP4到MKV轉換器，使您可以輕鬆調整視頻/音頻設置，編輯視頻文件，添加字幕/音軌，甚至從DVD翻錄文件。

1. 1.以原始質量通過批處理將MP4轉換為MKV。
2. 2.調整幀速率，視頻質量，視頻代碼等。
3. 3.使用剪輯，旋轉，修剪，剪切，壓縮，視頻濾鏡等編輯視頻。
4. 4.內置媒體播放器，可播放任何4K / 1080p HD視頻格式和DVD文件。

Step 1. Download and install the program on your computer, you can click the Add File and select the Add File or Add Folders or directly drag multiple video and audio files to this program.

Step 2. After that, you can select the MKV file as the output and adjust the profile settings according to your need, such as the resolution, frame rate, audio codec and more other settings.

Step 3. When you need to add the subtitles or audio tracks, you can click the audio channel or the subtitle to choose the desired one before clicking the Convert All button to convert MP4 to MKV.

第3部分：有關如何將MP4轉換為MKV的常見問題解答

結論

當您要本地化在線流視頻時，可以了解有關輕鬆將MP4轉換為MKV的最佳方法的更多詳細信息。只需檢查3種最常用的在線方法以及本文的最終解決方案即可。如果您對在Windows和Mac上將MP4文件轉換為MKV有任何疑問，可以隨時在本文中發表評論。