How to move big videos from Android to a Mac, at full quality

To get a video from an Android phone to a Mac exactly as the phone recorded it, copy the file over a USB cable. Messaging apps recompress video before they send it, and Google Photos does too unless backup is set to Original quality. A cable copy is the same file, bit for bit, whatever its size.

Two things trip people up on the way. Google's old Android File Transfer refuses any file over 4 GB, which a long 4K or 8K clip passes easily. And a finished copy can still be short if the cable dropped out, so compare sizes before you delete anything from the phone.

Why videos come out smaller

Most ways of sending a file between devices were built for small files, and video is the largest thing a phone makes.

• WhatsApp recompresses photos and videos you send in a chat, even with the HD option. A video sent as a document arrives as it left, up to 2 GB.
• Google Photos on Storage saver shrinks any video over 1080p to 1080p, so a 4K clip comes back with a quarter of its pixels. Express, offered in some countries, goes down to 480p. Original quality keeps the file, up to 10 GB per video.
• Gmail takes attachments up to 25 MB; anything larger goes as a Google Drive link instead.

The cloud also has to carry every byte twice, up from the phone and down to the Mac, so the speed of your internet connection sets the pace. That is fine for a two minute clip and slow for a holiday.

How big phone video gets

Samsung's own figure for 8K on the Galaxy S20 is about 600 MB for every minute, recorded in HEVC, and newer models such as the Galaxy S25 Ultra record 8K at 30 frames a second. At 600 MB a minute, a clip longer than about seven minutes is over 4 GB, which matters for the limit below.

Slow motion is large for its length because it records many more frames each second. Samsung describes its own modes like this: slow motion records the whole clip at 240 frames a second and plays only the busiest part slowly, and you can choose that part afterwards. Super slow-mo records a fraction of a second at 960 frames a second and stretches it over several seconds of playback. Either way, the phone's gallery decides what plays slowly, which matters on the Mac, as below.

The 4 GB limit

Android File Transfer, the app Google used to offer for Macs, could not copy a file larger than 4 GB. Google never said why; a 32-bit size field in the transfer, which tops out at 4 GB, is the likely explanation. Google no longer offers the app. If you still have it, it cannot copy a long video, and the Android File Transfer 4 GB limit explains the ways round it.

Other MTP apps, such as the free OpenMTP, handle files over 4 GB.

Copying over a cable

Use a cable that carries data at USB 3 speed if the phone supports it. A USB 2 phone or cable holds any method to about 20 to 40 MB/s, which turns a 10 GB video into a wait of several minutes; which USB-C cables carry data fast explains how to tell them apart. Camera videos are in DCIM/Camera, next to the photos.

• Image Capture, built into macOS, imports videos from the camera roll with the phone in PTP mode (Transferring images on Samsung). It installs nothing and copies one way.
• An MTP app such as OpenMTP reaches the whole phone with File transfer chosen in the USB notification, and copies both ways in its own window.
• SideMount mounts the phone as a drive in Finder, over the adb protocol rather than MTP. You drag a video off like any file, at well over 100 MB/s on a USB 3 cable, and QuickTime Player, VLC or an editor can open a clip on the phone directly: the whole file is copied into a cache on the Mac and handed over as the bytes arrive, so opening it a second time is instant. It needs macOS 26 or later, USB debugging, and a short setup the first time.

Wi-Fi works too, through sharing apps or a wireless mount, but it is far slower than a cable. Keep it for clips of a few hundred megabytes.

Checking the copy

A copy that stopped early often still opens and plays, until the point where it stops. Before you delete the original, check it:

1. Compare sizes in bytes, not megabytes. In Finder, select the copy and choose File > Get Info; the size line gives the exact number of bytes. In Terminal, ls -l prints it too. The phone's file manager or your transfer app shows the original's size.
2. Play the end. Open the copy in QuickTime Player or VLC and drag the playhead to the last few seconds. A truncated file fails there, not at the start.
3. For a file that matters, compare checksums. With adb installed, adb shell md5sum /sdcard/DCIM/Camera/VIDEO.mp4 prints the phone's checksum, and md5 ~/Movies/VIDEO.mp4 prints the Mac's. They must match exactly. Only one program can hold the phone's adb connection, so eject the phone first if it is mounted in Finder.

Playing Android video on a Mac

Most Android phones record HEVC (H.265) or H.264. Every Mac since macOS High Sierra plays HEVC in QuickTime Player. Apple silicon Macs decode it in hardware, and so do Intel Macs from the sixth generation of Core chips; 10-bit HEVC, which most HDR video uses, needs the seventh generation. Older Intel Macs decode it in software, and 4K or 8K can stutter there. VLC is the free fallback for anything QuickTime will not open.

The Pixel 10 can also record AV1. Macs with an M3 chip or later decode AV1 in hardware; on older ones, VLC plays it in software.

Slow motion is the other surprise. The file holds every frame, and the phone's gallery usually decides which part plays slowly, so a Mac player can show the clip at a different speed from the phone. Copy the original to keep every frame. If you want the slowed version as an ordinary video, save it from the phone's own video editor first and copy that too. For photos, see Samsung photos to a Mac and Pixel photos to a Mac.

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