100%將M4V文件大小從GB壓縮為MB的免費方法

M4V文件格式類似於MP4，是Apple生產的出色視頻容器。您可以在幾乎所有流行的播放器上播放M4V文件，例如iTunes，QuickTime，VLC Media Player，RealPlayer等。但是有時候，您可能會發現M4V視頻太大而無法存儲或共享。在這種情況下，您需要減小文件的大小。

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

第1部分。如何免費在線壓縮M4V

如前所述，在YouTube，Facebook，Instagram或其他流媒體網站上編輯和共享大型視頻文件可能有點困難。因為這些網站通常對您上傳的視頻有嚴格的大小限制。此外，大文件可能會佔用您的計算機，磁盤驅動器，電話，閃存驅動器，存儲卡等上的大量空間。

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.

您可以在任何主流瀏覽器（例如Google Chrome，Mozilla Firefox和Microsoft Edge）上使用它。並且不會在壓縮視頻中添加水印。您甚至可以欣賞高畫質的視頻。

以下是有關如何在線壓縮大型M4V文件的步驟。

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上減小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.

無論如何，請按照以下步驟在QuickTime中減小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。壓縮M4V的常見問題解答

結論

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.