Compressing videos can have an impact on video quality, depending on the compression method employed. Lossless compression maintains the original video quality but comes with a trade-off of larger file sizes. It achieves compression by preserving all the data, ensuring no quality degradation; lossy compression, which prioritizes smaller file sizes, may lead to a decrease in video quality. Therefore, when choosing a compression method, it's essential to consider the desired balance between file size and video quality.