code: private static EConv openByTranscoderEntries(int n, Entry[] entries) {
          EConv econv = new EConv(n);
  
          for (int i = 0; i < n; i++) {
              Transcoder transcoder = entries[i].getTranscoder();
              econv.addTranscoderAt(transcoder, econv.numTranscoders);
          }
          return econv;
      }
docs: /* rb_econv_open_by_transcoder_entries