What are the requirements for proof of funds when applying at a Canadian embassy, and how long should funds be in my account?

The inquiry discusses the requirements for proof of funds when applying for a visa at a Canadian embassy, particularly regarding how long funds need to be in the bank account before applying. A comment notes that one individual was able to apply after just one month at the Ottawa embassy, although there are concerns about whether guidelines have become stricter recently. The original poster is also looking for advice on how to check with the embassy prior to applying to avoid rejection and financial loss.