On Thu, 19 Nov 2020, Tim Allison wrote:
Looks like 'scale' needs to be taken into consideration? See 1.2.6.9
https://www.adobe.com/content/dam/acom/en/devnet/xmp/pdfs/XMPSDKReleasecc-2020/XMPSpecificationPart2.pdf
Ah, yes, check the spec!
1.2.6.5 suggests that xmpDM:duration can be frames or can be in seconds,
when used for a marker. 1.2.6.6 seems to say the overall media
xmpDM:duration should be a time with a default unit in seconds (unless
changed by a scale)
I guess we could set a scale for mp3 and leave the duration in ms, but
swapping it to seconds seems cleaner/better to me, even though it's a
breaking change.
Thoughts?
Nick
On Wed, Nov 18, 2020 at 3:26 PM Nick Burch <[email protected]> wrote:
Hi All
This question promoted by https://stackoverflow.com/q/64888488/685641
Is there / should there be fixed units on the xmpDM:duration metadata
property? And if so, what?
Currently, MP3 seems to use milliseconds via
http://tika.apache.org/1.24.1/api/org/apache/tika/parser/mp3/AudioFrame.html#getDuration--
but Ogg Vorbis uses seconds, as does M4A
Thoughts?
Nick
