Keavix

Guides for saving video properly.

Formats, resolutions, and how downloading actually works — written once, kept current, no filler.

Getting startedHow to download online videosWhat a video link actually points at, why quality lists differ between sites, and what to check before you save.6 min readYouTubeHow to download YouTube videosStep by step on desktop and mobile, plus what to do when the resolution you want isn't listed.5 min readYouTubeHow to download YouTube Shorts without croppingWhy so many tools hand back a letterboxed square, and how to keep the full 9:16 frame.4 min readYouTubeDownloading a playlist without filling your diskRough size arithmetic per resolution, and why audio-only is the right call for lecture series.6 min readFormatsMP4 vs WebM — which should you pick?One plays everywhere, one is smaller at the same quality. When that trade actually matters.4 min readFormatsWhat a container actually is (and why it isn't a codec)MP4 is a box; H.264 is what's inside it. Getting this one distinction right explains most format confusion.5 min readFormatsWhy re-encoding a video is almost always a mistakeGenerational loss in plain terms — and the two cases where converting is genuinely worth it.5 min readQualityVideo resolution explained: 1080p vs 720p vs 4KWhat the numbers mean, why bitrate matters more than you'd think, and when 4K is wasted on you.7 min readQualityBitrate vs resolution: which one you can actually seeA 4K file at a low bitrate looks worse than good 1080p. Here's how to read the numbers before downloading.6 min readQualityWhat 60fps really changesWhere high frame rate helps, where it does nothing, and why it roughly doubles your file size.4 min readAudioVideo and audio formats, plainlyMP3, M4A, AAC, Opus — what each one is for, and why re-encoding is usually the wrong move.5 min readAudioIs 320kbps actually better than 256?What the ceiling of the source file means for your download, and when the difference is audible at all.5 min readMobileHow to download videos on iPhone and AndroidWhere files land on each platform, and how to get them into your gallery or player.4 min readInstagramHow to download an Instagram carouselGetting all ten items in one go, and what happens with mixed photo-and-video posts.4 min readRightsWhen downloading a video is legalYour own uploads, Creative Commons, fair dealing, and the line where keeping becomes redistributing.8 min readRightsArchiving Creative Commons and public-domain videoWhere to find material that's genuinely yours to keep, and how to check a licence before you save it.6 min readHow it worksWhy high-quality YouTube downloads arrive silentSeparate video and audio streams, muxing, and why some tools skip the step that fixes it.5 min read