Depending on what is damaged, you can then use the -F option to fix that archive. When doubled as in -FF, the archive is scanned from the beginning and zip scans for special signatures to identify the limits between the archive members. The single -F is more reliable if the archive is not too much damaged, so try this option first.

For example, instead of using the 3D rhinoceros, use a picture of a rhinoceros instead. These 3D models can be quite large and there is currently no way to compress them. Notice in the picture below how adding just one animated 3D model adds over 26 MB to the PowerPoint file. You might also find a lot of duplicateChild Slidelayouts that you can simply remove. This happens when people copy and paste between presentations that don’t have a consistent or well-built PowerPoint template. To expand your knowledge and learn how to create your own custom PowerPoint template from scratch, read our guide here. To expand your knowledge and learn how to embed a video in PowerPoint , read our guide here.

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When the media gallery shows up, select a video file from it. You can also switch to the “Browse” tab and click on the Browse Videos button to pick the video you want to compress. Encrypting file names – Sometimes file names can be just as important as the contents inside of a file. If you need to encrypt your file names, so it’s impossible for someone to see what kind of files are in your archive, you will need to use the 7z file extension instead of zip. ZipCrypto vs. AES-256 – If you choose to create a zip file , you’ll get to choose between ZipCrypto and AES-256 encryption.

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You should also be aware that repeated saving in the JPG format causes more and more image degradation. Perhaps you forgot to include a file while compressing files to a ZIP file. How would you add a new file to an existing zip file? You could delete the zip file and create another one, but there’s a better way.

The more compression is used, the worse the quality will be. When you compress a file, the data is reduced in size by removing unnecessary information. Despite the fact that everything you say is true, it has nothing to do with the OP’s question. For all intents and purposes, Twerk’s statement is accurate, a zip IS a zip. Regardless of the algorithm used, a zip file will not open unless it is bit-for-bit perfect with the read-in. Furthermore, MASV automatically creates cross-platform zips within each file transfer that can be unzipped using any operating system, no matter the file size. Zipping files also adds time to any file transfer.

Most importantly, it facilitates data exchange over computer networks. Utilizing different and more efficient algorithms sometimes calls for a change in file extension. For example, the program 7-Zip can use LZMA and LZMA2 compression algorithms, which result in a “.7z” file extension. These algorithms are much better at compressing files than the default ZIP method, which is fast but uses older and less efficient DEFLATE compression. Likewise, RAR is better at compression than ZIP, but it, too, requires other software prior to use, even for simple data extraction/decompression.

You can click on the i icon on the video to check its codec information. Looking for info of its container format and its codec (H264, HEVC, MPEG-4, VP9, VP8, etc). You’ll be asked whether to install optional VLC components or not. We suggest you to think twice before selecting those components. That would slow down the operating speed of your computer. I want to get pro advice on Mac apps and exclusive member offers.