To watch spatial video from a Galaxy on a Quest, the reported workflow captures it as MV-HEVC, converts it to side-by-side (SBS) video with FFmpeg, then transfers the result to the headset for playback. Sydney Butler described this process with a Galaxy S25 Ultra and Meta Quest 3. Samsung cautions that some Camera Assistant features may not be available on every phone model.

Keep the capture, conversion and headset playback in separate steps: the reported Quest workflow converts the phone’s MV-HEVC file to SBS before transferring it.

What you need

  • A Galaxy phone where Camera Assistant offers 3D capture. Samsung lists the feature under “Capture for Galaxy XR” and says some features may not be available on all models; its Camera Assistant listing does not specify a complete compatible-model list.
  • A computer with FFmpeg. Butler’s example uses Windows; he says FFmpeg also works on Linux and macOS.
  • A Quest headset, a USB-C flash drive for the transfer method he describes, and a player that supports SBS 3D video. Butler used Meta Quest 3 and Finally VR Video Player.

Enable 3D capture and record

Dark Camera Assistant settings screen in English, with the 3D capture toggle on beneath “Capture for Galaxy XR.”
  1. Turn on 3D capture in Camera Assistant. The setting adds a 3D-capture option to the standard Camera app, according to the screen’s description.
  2. Record in the standard Camera app. Butler’s reported workflow returns to that app and uses its VR-headset icon to capture. He describes the resulting spatial video as MV-HEVC, a format that stores multiple views, and says the phone uses two rear-camera views, cropping one to match the other.

Convert MV-HEVC to SBS with FFmpeg

Windows PowerShell in English showing an FFmpeg command with two video-view inputs, encoding options and an SBS output filename.

In Butler’s Quest workflow, FFmpeg joins the two views horizontally to create SBS video, placing one view beside the other for playback. Copy the captured file to your computer, open a terminal in its folder, and run the command below. Replace galaxy.mp4 with the input filename and choose an output filename if needed.

ffmpeg -i "galaxy.mp4" -filter_complex "[0:v:view:0][0:v:view:1]hstack=inputs=2[v]" -map "[v]" -map "0:a?" -c:v libx265 -crf 18 -c:a copy "galaxy_FSBS.mp4"

The filter combines the two video views; -map "0:a?" includes audio if present, and -c:a copy copies it rather than encoding it again. The example encodes video with libx265 at CRF 18. On a compatible NVIDIA GPU, Butler gives -c:v hevc_nvenc -preset p5 -cq 18 as an alternative to -c:v libx265 -crf 18.

Transfer the SBS file to Quest and play it

  1. Copy the converted file to a USB-C flash drive. This is the transfer method Butler reports using.
  2. Copy the file into the headset’s media storage. Butler used the Quest file manager for this step.
  3. Open it in an SBS-compatible player. Butler reports that his sample played as a 3D scene in Finally VR Video Player on Meta Quest 3.

Fix reversed left and right views

If the depth looks wrong because the left and right views are swapped, reverse their order in the FFmpeg filter: put [0:v:view:1] before [0:v:view:0]. Butler’s guide gives this as the correction for reversed views.