100%将M4V文件大小从GB压缩为MB的免费方法

M4V文件格式类似于MP4，是Apple生产的出色视频容器。您可以在几乎所有流行的播放器上播放M4V文件，例如iTunes，QuickTime，VLC Media Player，RealPlayer等。但是有时候，您可能会发现M4V视频太大而无法存储或共享。在这种情况下，您需要减小文件的大小。

If you don’t know how to compress M4V, you can try the options below.

第1部分。如何免费在线压缩M4V

如前所述，在YouTube，Facebook，Instagram或其他流媒体网站上编辑和共享大型视频文件可能有点困难。因为这些网站通常对您上传的视频有严格的大小限制。此外，大文件可能会占用您的计算机，磁盘驱动器，电话，闪存驱动器，存储卡等上的大量空间。

Therefore, when you have a large M4V file, you’d better shrink the size with a professional video compressor. If you are looking for a free program, why not try FVC Free Video Compressor? It is completely free to use. What’s more, it is an online compressing tool, which means you can compress any video to the desired size without installing huge software on your computer.

您可以在任何主流浏览器（例如Google Chrome，Mozilla Firefox和Microsoft Edge）上使用它。并且不会在压缩视频中添加水印。您甚至可以欣赏高画质的视频。

以下是有关如何在线压缩大型M4V文件的步骤。

Step 1. Go to the website of FVC Free Video Compressor on your browser. You will see an Add Files to Compress button in the banner. Click it and follow the instruction to download and install the FVC launcher on your computer.

Step 2. After that, you need to select the M4V file you want to compress. Then you can move the slider behind the Size box to adjust and find the exact file size you want effortlessly. You can also change the resolution and bitrate separately according to your needs.

Step 3. If you want to compress M4V to MP4, then you should choose MP4 as the output format here. If not, you can click Compress in the right corner directly. Select a folder to save the compressed video and wait for a few seconds to get the wanted video.

第2部分。如何在Mac / Windows上减小M4V文件的大小

As M4V is a format developed by Apple, you can also use Apple’s default player, QuickTime Player, to compress M4V files on Mac. Also, QuickTime Player offers a Windows version for PC users. But you should notice that the latest version for Windows is QuickTime 7.7.9 which is released in 2016. So, if what you want is a newly released program, you can try FVC Free Video Compressor that can even handle 4K videos.

无论如何，请按照以下步骤在QuickTime中减小M4V文件的大小。

Step 1. Open the M4V file waiting to be compressed with QuickTime.

Step 2. Locate the File menu in the upper left corner. Click it and find the Export As option from the list. Then pick a resolution that is lower than the original video to compress the video. After all, we don’t want to increase the size here.

Step 3. If you don’t want to change the saving path, you can straight click Save. Please wait patiently to export the video.

第3部分。压缩M4V的常见问题解答

结论

Now you have 2 simple and free ways to compress M4V file. If you are a Mac user, you can use QuickTime Player to reduce the video size. But if you are not satisfied with fixed resolutions QuickTime provides or you are using a Windows PC, you can give FVC Free Video Compressor a shot.