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Turn a few seconds of footage into a 10-minute, 30-minute or one-hour file for a screen, a stream break or background playback, and see how big it will be before you start.
To loop a video for an hour, open the clip, choose Length under Repeat, tap 1 hour and press Export video. The short clip is repeated until the file runs for exactly 60 minutes, with the final pass trimmed so it ends on the hour.
The same choice offers 10 min and 30 min, and Custom length takes any running time up to 3:00:00. A long export is quicker than you might expect: the loop is encoded once and those compressed frames are written again for every repeat, so an hour built from a 5-second clip needs about 5 seconds of encoding plus the time it takes to write the file.
The work happens in your browser and the video is never uploaded. The main thing to plan for is size: an hour of video is a large file, so the estimate under Export settings is worth a look before you press the button.
Drop the file on Drop a video to loop or press Select video. A clip of a few seconds to a minute is typical for a long loop.
Over an hour, a jump at the join is seen hundreds of times. Press Find the best loop (F) to choose matching start and end frames, and choose Crossfade if the result shows a Fair or Poor match.
Under Repeat, choose Length and tap 10 min, 30 min or 1 hour, or type a running time into Custom length.
Open Export settings and read the estimate line, which shows the file size, length and pixel size. Lower Size or pick Smaller file under Quality if the number is too big.
(enlarge image) With Length on 1 hour, the estimate line shows the size and how many times the pass is copied.
Press Export video and keep the tab open while the file is written. When Your video is ready appears, press Download video.
Most editors treat an hour of repeated clips as an hour of new video and compress every frame of it, which can take longer than the video lasts. loop.video does the expensive part once. It prepares one pass of the loop, then writes those same compressed frames again and again with new timestamps until the length is reached. Only the sound is rebuilt for the full hour, because audio is light work and rebuilding it keeps it locked to the picture.
In some cases even that single encode is skipped. If the join is Cut, Shape is Original, Size is original, Quality is Standard and the loop starts on a key frame (a frame stored as a complete picture, such as the first frame of the file), the original frames are copied with no re-encoding. The picture is then identical to your source for the whole hour.
Long files are written to the browser’s private storage as they are built rather than kept in memory, so a long export does not need an hour of video’s worth of RAM.
File size is bitrate multiplied by running time. Bitrate is how much data each second of video uses, usually given in megabits per second (Mbit/s). Eight megabits make one megabyte, so the sum for an hour is: Mbit/s × 3,600 ÷ 8 = megabytes.
Those figures are rough, and your footage will differ, which is why the estimate line under Export settings is the figure to trust. When frames are copied, the file keeps the bitrate of the original. When the loop is encoded, Size (original, 1080p, 720p or 480p) and Quality (Smaller file, Standard, High) set it. Dropping one step in Size usually saves more than changing Quality, and for a background screen viewed from across a room 720p is often plenty.
Make sure the device has free space for the estimated size with some room to spare, since the file is built in the browser’s storage before you download it. On a phone, a multi-gigabyte download can take a while to save to Photos; a computer is the more comfortable choice for hour-long files.
If the loop is meant to calm or set a mood, the ambient video loop page covers what makes footage feel restful over a long stretch. For a track that sets the length, choose Until the music ends instead; see loop a video with music.
Exports from loop.video stop at three hours, and that limit is deliberate. A 10-hour file at 1080p would run to tens of gigabytes, take a long time to write and download, and fill the storage of many phones and laptops. Browsers are not built to produce files that size reliably.
There is an easier way to get ten hours of playback: export one hour, then switch on the repeat or loop setting in whatever plays it. TVs, media players and presentation software usually have one, and an hour-long file repeated by the player looks the same as a 10-hour file to anyone watching. The VLC guide shows one way to do that on a computer. If you plan to publish the loop online, see how to loop a YouTube video, which also covers uploading long loops.
Usually minutes rather than an hour. The loop is encoded once (or copied, if the conditions are met) and then written repeatedly, so most of the time goes on writing the file, which depends on its size and your device.
Three hours. Type up to 3:00:00 into Custom length. For longer playback, export an hour and let the player repeat it.
Yes, deliberately. With Length, the final pass is trimmed so the file ends exactly at the time you chose, rather than overrunning by part of a loop.
Under Export settings, choose a lower Size such as 720p or 480p, or set Quality to Smaller file. The estimate line updates as you change them.
Yes. With Sound on Original, the audio is rebuilt for the whole length and smoothed at each join. You can also choose Music and turn on Repeat the music to fill the hour with a track.
Yes. Length has buttons for 10 min and 30 min, as well as 30 s, 1 min and 1 hour.
Any jump repeats every pass, so it is worth fixing. Use Find the best loop, then Crossfade or Blend, and press Watch the join to check the moment the end meets the start.
No. GIF and WebP hold one pass of at most 30 seconds and loop forever on their own when Length is chosen. For a long file with sound, export MP4 or WebM.