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| -rw-r--r-- | README.md | 3 |
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@@ -85,6 +85,9 @@ The following variables are available to presets at source time: | `input_codec` | Video codec of the input file (e.g. `h264`, `hevc`) | | `input_pixel_format` | Pixel format of the input after `yuvj*` normalisation (e.g. `yuv420p`) | | `output_pixel_format` | Recommended output pixel format, derived from the input to preserve chroma subsampling and bit depth | +| `input_frame_rate` | Raw frame rate fraction of the input file as reported by `ffprobe` (e.g. `30000/1001`, `25/1`) | +| `input_fps` | `input_frame_rate` rounded to the nearest integer (e.g. `30`, `25`, `60`) | +| `output_gop_size` | Recommended GOP size derived from `input_fps` (≈ 5 s of video, capped at 300 frames) | Before the preset's `ffargs` are appended, the script always passes these base arguments to `ffmpeg`: |