libobs: obs-ffmpeg: win-dshow: Planar 4:2:2 video

This format has been seen when using FFmpeg MJPEG decompression.

plugins/obs-ffmpeg/obs-ffmpeg-formats.h

@@ -35,6 +35,8 @@ obs_to_ffmpeg_video_format(enum video_format format)
 		return AV_PIX_FMT_GRAY8;
 	case VIDEO_FORMAT_BGR3:
 		return AV_PIX_FMT_BGR24;
+	case VIDEO_FORMAT_I422:
+		return AV_PIX_FMT_YUV422P;
 	}
 
 	return AV_PIX_FMT_NONE;
@@ -62,6 +64,8 @@ ffmpeg_to_obs_video_format(enum AVPixelFormat format)
 		return VIDEO_FORMAT_Y800;
 	case AV_PIX_FMT_BGR24:
 		return VIDEO_FORMAT_BGR3;
+	case AV_PIX_FMT_YUV422P:
+		return VIDEO_FORMAT_I422;
 	case AV_PIX_FMT_NONE:
 	default:
 		return VIDEO_FORMAT_NONE;