}
+bool
+FFmpegExaminer::has_alpha() const
+{
+ if (video_codec_context()->pix_fmt == -1) {
+ return false;
+ }
+
+ auto const d = av_pix_fmt_desc_get(video_codec_context()->pix_fmt);
+ DCPOMATIC_ASSERT(d);
+ return d->flags & AV_PIX_FMT_FLAG_ALPHA;
+}
+
+
bool
FFmpegExaminer::yuv () const
{