Probleme avec Imaq write file qui n'enregistre pas les images en jpg

Bonjour,
dans le cadre d'un stage, je suis en train de dévellopper un programme qui récupère une vidéo issue d'une caméra usb. Jusque là tout vas bien. Mais je souhaite réalisé une vidéo a partir d'une suite d'image au format jpeg que le programme aura enregistrer dans un dossier.
Mon probleme etant que Imaq write file 2 que j'utilise n'arrive pas a enregistrer les image au format jpg (alors qu'il y arrive au forma png, tiff ou jpg2000). Ainsi, lorsque je lance la capture, le programme a l'air de faire des opération mais lorsque je vais dans le dossier où doivent etre entreposé les jpeg, celui ci est vide.
J'utilise labview 2010 et suis sous windows 7 x64 bits.
Merci d'avance pour l'aide que vous pourez m'apporter.

oui bien sur, le voila :
Pièces jointes :
test Controle_caméra_prosilica_2.8_2121.vi ‏3752 KB
CalculateFPS.vi ‏12 KB

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oui bien sur, le voila :
Pièces jointes :
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Probleme avec Imaq write file qui n'enregistre pas les images en jpg

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