peterbraden / insv-to-yt

Convert Insta360 .insv videos to mp4 that can be uploaded to youtube.

insv-to-yt

Convert Insta360 .insv videos to .mp4 that can be uploaded to youtube as 360 video.

Insta360 videos are .insv files which are .mp4 in fisheye format. You need 2 files to reconstruct the full 360 degree range.

Youtube requires a .mp4 with custom metadata in an equirectangular projection.

We therefore need to:

1. Strip the trailer data from the .insv file and rename to .mp4
2. Join the 2 files side by side as dual fisheye.
3. Remap each frame to equirectangular.
4. Add the custom youtube metadata.

Out of scope for the moment:

• Reprojecting the focus of the video.

Using FFMpeg

The most obvious approach would be to use the out of the box filters from ffmpeg. ie:

# Join videos side by side
ffmpeg -i $VIDEO1 -i $VIDEO2 \
  -filter_complex "[0:v][1:v]hstack=inputs=2[v]; [0:a][1:a]amerge[a]" \
  -map "[v]" -map "[a]" \
  -ac 2 intermediate.mp4

# Remap to equirectangular
ffmpeg -i intermediate.mp4 -vf v360=dfisheye:e:yaw=-90 intermediate2.mp4

# Use youtube cli to add metadata
python spatialmedia -i intermediate2.mp4 output.mp3

This works, however the concatenation of the videos leaves a nasty visible join between the two 180 videos.