avformat/vf_vapoursynth: simplify xyz format check

libavformat/vapoursynth.c

@@ -118,7 +118,8 @@ static av_cold enum AVPixelFormat match_pixfmt(const VSFormat *vsf, int c_order[
         pixfmt = av_pix_fmt_desc_get_id(pd);
 
         if (pd->flags & (AV_PIX_FMT_FLAG_BAYER | AV_PIX_FMT_FLAG_ALPHA |
-                         AV_PIX_FMT_FLAG_HWACCEL | AV_PIX_FMT_FLAG_BITSTREAM))
+                         AV_PIX_FMT_FLAG_HWACCEL | AV_PIX_FMT_FLAG_BITSTREAM |
+                         AV_PIX_FMT_FLAG_XYZ))
             continue;
 
         if (pd->log2_chroma_w != vsf->subSamplingW ||
@@ -141,9 +142,6 @@ static av_cold enum AVPixelFormat match_pixfmt(const VSFormat *vsf, int c_order[
         if (av_pix_fmt_count_planes(pixfmt) != vsf->numPlanes)
             continue;
 
-        if (strncmp(pd->name, "xyz", 3) == 0)
-            continue;
-
         if (!is_native_endian(pixfmt))
             continue;