Exhibit 12.1 TiVo Inc. Ratio of Earnings to Fixed Charges From Nine Months Inception to Ended Ratio of Earnings to Fixed Charges 12/31/97 FY 98 FY '99 FY '00 Jan '01 10/31/01 ---------------------------------- ------------ ---------- ----------- ------------ ----------- ------------ Interest expense.......................... (19,000) (20,000) (34,000) (131,000) (9,000) (68,000) Interest expense convertible debt......... (450,000) Interest expense-Related Parties.......... (1,111,000) Amortization of comdisco warrants......... 0 0 (432,000) (164,000) (8,000) (74,000) Amortization of convertible debt financing expenses................................. (515,000) Interest within rental expense............ (15,000) (206,000) (347,000) (800,000) (72,000) (975,000) Total Fixed Charges....................... (34,000) (226,000) (813,000) (295,000) (17,000) (1,703,000) -------- ---------- ----------- ------------ ----------- ------------ Earnings = Net loss less fixed charges.... (561,000) (9,495,000) (65,752,000) (206,059,000) (18,996,000) (117,438,000) Ratio of Earnings to Fixed Charges........ 16.50 42.01 80.88 698.51 1,117.41 68.96 -------- ---------- ----------- ------------ ----------- ------------ For the above periods, earnings were insufficient to cover fixed charges by $595,000, $9,721,000, $66,565,000, $206,354,000, $19,013,000 and $119,141,000 in fiscal years 1997, 1998, 1999, 2000, one month transition period ended January 31, 2001, and nine months ended October 31, 2001, respectively. From Nine Months Ratio of Earnings to Inception to Ended Combined Fixed Charges 12/31/97 FY 98 FY '99 FY' 00 Jan '01 10/31/01 ---------------------- ------------ ---------- ----------- ------------ ----------- ------------ Interest expense.......................... (19,000) (20,000) (34,000) (131,000) (9,000) (68,000) Interest expense-convertible debt......... -- (450,000) Interest expense-Related Parties.......... -- (1,111,000) Amortization of comdisco warrants......... (432,000) (164,000) (8,000) (74,000) Amortization of convertible debt financing expenses................................. (515,000) Interest within rental expense............ (15,000) (206,000) (347,000) (800,000) (72,000) (975,000) Stock dividend............................ -- (1,514,000) (423,000) (2,590,000) Total Fixed Charges....................... (34,000) (226,000) (813,000) (2,609,000) (512,000) (5,783,000) -------- ---------- ----------- ------------ ----------- ------------ Earnings = Net loss less fixed charges.... (561,000) (9,495,000) (65,752,000) (203,745,000) (18,501,000) (113,358,000) Ratio of Earnings to Combined Fixed Charges........................... 16.50 42.01 80.88 78.09 36.13 19.60 -------- ---------- ----------- ------------ ----------- ------------ For the above periods, earnings were insufficient to cover fixed charges by $595,000, $9,721,000, $66,565,000, $206,354,000, $19,013,000 and $119,141,000 in fiscal years 1997, 1998, 1999, 2000, one month transition period ended January 31, 2001, and nine months ended October 31, 2001, respectively. 1