http://www.pdfa.org/doku.php?id=pdfa:en:pdfa_whitepaper
Certain functionality allowed in PDF 1.4 has been specifically excluded from PDF/A, for example transparency and sound and movie actions.
[...]
In short, PDF/A is based on the PDF Reference 1.4, with specific features being either mandatory, recommended, restricted, or prohibited.
C'est dans un but d'archivage, donc plus strict que le PDF classique, qui convenait pas (video -> codec -> pas ISO)
[^] # Re: PDF/A et PDF 1.7
Posté par riba . En réponse au journal Le PDF/A et l'open source. Évalué à 2.
Certain functionality allowed in PDF 1.4 has been specifically excluded from PDF/A, for example transparency and sound and movie actions.
[...]
In short, PDF/A is based on the PDF Reference 1.4, with specific features being either mandatory, recommended, restricted, or prohibited.
C'est dans un but d'archivage, donc plus strict que le PDF classique, qui convenait pas (video -> codec -> pas ISO)