Digital Video x-fmt/152 signature

[Tyler Thorsted]

Hi all,

Does anyone know the backstory on why there is no signature for the DV format? Did it just get forgotten or is there something blocking the creation of a signature?

Tyler Thorsted

[David Clipsham]

Hi Tyler,

The format itself has been there since the v1 signature file in 2005, and was assigned the PUID x-fmt/152 in v10 along with everything else that lacked PUIDs at that point (which seems to have been everything that lacked a binary sig). i see no further changes since. 

I assume we're talking raw DV-DIF? Looking at the examples here (https://sourceforge.net/projects/libdv/files/examples/examples/)  I see a little variety (e.g. pond.dv doesn't have the 0x1F0700 TRID is expecting, but this and the others all have 0x3F0700 from offset 80/0x50) so maybe if it has been looked at in the past there was uncertainty around a limited pool of samples? I have come across other files with .dv extension that are clearly some variant on Quicktime...

David

[David Clipsham]

That should say 'the format entry itself'... I don't seem to be able to edit my own comments...