While it can significantly improve compression ratios, it has specific trade-offs for video files: How it Works
: If any part of a solid block becomes corrupted, it can potentially damage or prevent the extraction of all files within that same block. When to Use it video_2021-.7z
: All uncompressed files are concatenated and processed together. This allows the algorithm to find similarities across different files. While it can significantly improve compression ratios, it
: To extract just one file from a solid archive, 7-Zip may need to decompress all preceding data in that solid block, making single-file retrieval much slower than in a non-solid .zip . : To extract just one file from a
: Because video files (MP4, MKV) are already highly compressed, you may see limited size reduction unless there are many redundant or identical files in the archive.
if you need quick access to individual videos without waiting for the whole set to process. Does 7z compress better than zip? - Microsoft Community Hub