France Joins Earlier in the Thirty Years' War

During the Bohemian revolt which started the Thirty Years' War, as soon as the Ottomans support the rebels, could France have possibly joined the war from that point? And if so, could it have led to an earlier victory? And if so any affect on its land gains? I was thinking it could possibly gain for German territory.
 
I think there would have to be no Huguenot rebellion. From 1621-29, France was occupied with its own domestic military/political crisis.
 
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