# transform

**Repository Path**: mirrors_rdp/transform

## Basic Information

- **Project Name**: transform
- **Description**: A equirectangular to cubemap transform for video
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-09-25
- **Last Updated**: 2026-01-24

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Transform

Transform is a video filter that transforms 360 video in equirectangular projection into a cubemap projection

## Building

Transform is implemented as an ffmpeg video filter. To build Transform, follow these steps:

1. Checkout the source for ffmpeg
2. Copy `vf_transform.c` to the libavfilter subdirectory in ffmpeg source
3. Edit `libavfilter/allfilters.c` and register the filter by adding the line: `REGISTER_FILTER(TRANSFORM, transform, vf);` in the video filter registration section
4. Edit `libavfilter/Makefile` and add the filter to adding the line: `OBJS-$(CONFIG_TRANSFORM_FILTER) += vf_transform.o` in the filter section
5. Configure and build ffmpeg as usual

## Running

Check out the options for the filter by running `ffmpeg -h filter=transform`
A typical execution would be something like `ffmpeg -i input.mp4 -vf transform='input_stereo_format=MONO:w_subdivisons=4:h_subdivisons=4:max_cube_edge_length=512' output.mp4`