Updated reader and writer for artwork

Author: djthorpe

pkg/ffmpeg/reader.go

@@ -181,7 +181,11 @@ func (r *Reader) BestStream(t media.Type) int {
 	switch {
 	case t.Is(media.VIDEO):
 		if stream, _, err := ff.AVFormat_find_best_stream(r.input, ff.AVMEDIA_TYPE_VIDEO, -1, -1); err == nil {
-			return r.input.Stream(stream).Id()
+			// Only return if this doesn't have a disposition - so we don't select artwork, for example
+			disposition := r.input.Stream(stream).Disposition()
+			if disposition == 0 || disposition.Is(ff.AV_DISPOSITION_DEFAULT) {
+				return r.input.Stream(stream).Id()
+			}
 		}
 	case t.Is(media.AUDIO):
 		if stream, _, err := ff.AVFormat_find_best_stream(r.input, ff.AVMEDIA_TYPE_AUDIO, -1, -1); err == nil {

pkg/ffmpeg/writer.go

@@ -158,6 +158,15 @@ func (writer *Writer) open(options *opts) (*Writer, error) {
 		}
 	}
 
+	// Add artwork
+	for _, entry := range options.metadata {
+		// Ignore artwork fields
+		if entry.Key() != MetaArtwork || len(entry.Bytes()) == 0 {
+			continue
+		}
+		fmt.Println("TODO: Add artwork")
+	}
+
 	// Set metadata, write the header
 	// Metadata ownership is transferred to the output context
 	writer.output.SetMetadata(metadata)