![]() Also the file size can be reduced significantly. It's a lot quicker, up to multiple times faster depending on your source and the amount of the resolution decrease, as there are less pixels to be encoded. All the answers here are for reducing the compression quality but nobody has mentioned reducing video frame size. You mentioned wanting to reduce filesize to fit more videos on a mobile device, which is my usecase as well. ffmpeg -i input.mp4 -vcodec libx264 -crf 20 output.mp4 Vary the CRF between around 18 and 24 - the lower, the higher the bitrate. For example for a target size of 1 GB (one giga byte, which is 8 giga bits) and 10 000 seconds of video (2 h 46 min 40 s), use a bitrate of 800 000 bit/s (800 kbit/s): ffmpeg -i input.mp4 -b 800k output.mp4Īdditional options that might be worth considering is setting the Constant Rate Factor, which lowers the average bit rate, but retains better quality. To see this technique applied using the older H.264 format, see this answer, quoted below for convenience:Ĭalculate the bitrate you need by dividing your target size (in bits) by the video length (in seconds). ffmpeg -i input.mp4 -vcodec libx265 -crf 28 output.mp4 Note that lower CRF values correspond to higher bitrates, and hence produce higher quality videos. To use it, replace the libx264 codec with libx265, and push the compression lever further by increasing the CRF value - add, say, 4 or 6, since a reasonable range for H.265 may be 24 to 30. Since 2013 a video format much better than H.264 is widely available, namely H.265 (better in that it compresses more for the same quality, or gives higher quality for the same size). Support department need to start responding to requestsĮrror log file should be easily accesable.Update 2020: This answer was written in 2009. Don't waste your money or your time with AVC. Decided to look into similar software and in my opinion have found both WinX HD Video Converter and FAASOFT to be excellent, easy to use, multiple config options and reasonably priced. ![]() Which is frustrating and disappointing as originally the software was pretty good. Since installing I have not been able to compress anything avi, mp4, mkv - transcode_init(0) error. After upgrading to the latest version it took a well known download site to intervene before they would release the upgrade serial number. The current version does not work and there is ZERO customer service and/or technical support. There are other, more specific file formats shown in the menu but are only accessible through the full version. The trial version lets you convert videos between the most commonly used formats such as AVI, MPEG4 (MP4), FLV, and even the mobile 3GP formats. Unfortunately, the app will remind you that the rest of its features are only available with the full version.Īnother glaring limitation of the app is that it shows you what file types can be converted from one form to another, but doesn’t let you use them all. Additionally, more specific features are grouped together in separate pop-up windows within the app. Almost all of the main features you’ll need are accessible in the taskbar, represented by large icons. Lastly, as an app, its streamlined user interface makes it absolutely quick to get used to. Similarly, you can also crop or set a different aspect ratio, giving you control over the size of the resulting video. You can change the brightness, contrast, hue, and saturation of your file before you convert it, letting you improve or change your viewing experience. Going beyond the basic video compression services, this app also lets you modify some of the visual parameters. Since the app is light in terms of file size, the installation is also quick to complete. Installing the app also won’t be a problem since it sports a quick installation mechanic that only asks users to choose the installation directory, or to use the default one. However, it is important to note that the more you compress, the poorer its quality will be.Īlso, further boosting its on-the-go reliability, the app only comes with a small file size–its installer only clocks in at a little over 5MB. This means you get to keep your high-resolution movies and clips without worrying whether your media player will run them. The software lets you compress videos while keeping their resolution and audio quality. As a video editing tool, Video Compressor has the basic features needed to reduce the file size or change video metadata.
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