<Page>
                                                                    EXHIBIT 12.2

                                 VIDEOTRON LTEE
                    COMPUTATION OF RATIO OF LONG-TERM DEBT,
                  EXCLUDING QMI SUBORDINATED LOANS, TO EBITDA
    (DOLLARS IN MILLIONS, EXCEPT FOR RATIO OF LONG-TERM DEBT, EXCLUDING QMI
                         SUBORDINATED LOANS, TO EBITDA)

<Table>
<Caption>
                                                        YEAR ENDED                 SIX MONTHS         PROFORMA
                                                       DECEMBER 31,              ENDED JUNE 30,       JUNE 30,
                                              ------------------------------   -------------------   ----------
                                                2002       2003       2004       2004       2005        2005
                                              --------   --------   --------   --------   --------   ----------
                                                                                   
CANADIAN GAAP
Long-term debt, excluding QMI subordinated
  loans(1)..................................  $1,119.6    $886.7     $888.9     $876.6     $904.8      $904.8
EBITDA(2)(3)................................     210.4     277.7      341.1      163.7      187.5       201.3
                                              --------    ------     ------     ------     ------      ------
Ratio of long-term debt, excluding QMI
  subordinated loans, to EBITDA.............       5.3       3.2        2.6        2.7        2.4         2.2
                                              --------    ------     ------     ------     ------      ------
</Table>

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(1) As defined and calculated in note 6 to "Selected Consolidated Financial and
    Operating Data," except for the pro forma combined long-term debt, excluding
    QMI subordinated loans, for the six months ended June 30, 2005, which is
    calculated as described in note 9 to "Summary -- Summary Consolidated
    Financial and Operating Data and Pro Forma Combined Financial Information."

(2) As defined and calculated in note 7 to "Selected Consolidated Financial and
    Operating Data."

(3) Ratio of long-term debt, excluding QMI subordinated loans, to EBITDA for the
    six months ended June 30, 2004 and 2005, is based on annualized EBITDA for
    the six months ended June 30, 2004 and 2005, respectively.