Converting animation & audio from 24 fps to 25 fps

[Gary Adcock]

[Dennis Couzin] “Gary, you need to debate your Compressor finding with Ken Stone”

No I do not.
This is what I do for a living, I am not guessing that it might pass standards or assuming that it will work because got info from a posting online.

I base my comments on my own experience and testing with multiple systems that handle the conversions in both software and hardware. The conversion between 25 and 24 you are talking about are always best done in hardware from companies Snell and WIlcox and Silicon Opitx- that is if the requirement is ultimate perfection.

However the reality of the process is that the vast majority of the content from the US uses the +4% method when broadcast under PAL standards.

May I ask again, Are you experienced with doing this type of conversion from various sources or are you just guessing?

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

Inside look at the IoHD
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

[Gary Adcock]

[Dennis Couzin] ” 2:2:2:2:2:2:2:2:2:2:2:3″

That would be flagged as a dropped frame error on the tape by the engineer in Standards and will be rejected as “failing to meet quality standard for error free transmission”

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

Inside look at the IoHD
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

[Andreas Kiel]

[Gary AdCock] That would be flagged as a dropped frame error on the tape by the engineer in Standards and will be rejected as “failing to meet quality standard for error free transmission””

Hm,

We can discuss the needed amount of the “2’s” but there is no reason why the resulting file should be flagged as anything unusual including Drop Frame. The resulting file will have 25 FPS FPS and as long as the colors are correct there would be no issue from the technical side.

If your background would be film and you would have worked with it in the “old” days you would understand Dennis’s approach.
Beside the hardware based conversion these days software would allow (or help for) an even better conversion than hardware alone (sometimes it even can’t be done with hardware) – BUT this would include a horrible amount of time to be spent with roto painting and roto spline (or masking) and therefore doesn’t make sense for most of nowadays productions.

I do quite a lot of these “handmade” movies for R&D sometimes boosting up the frame rate by factor 10 – so I know how to do it and match all the technical specs.

Andreas

Spherico
https://www.spherico.com/filmtools

[Gary Adcock]

[Andreas Kiel] “We can discuss the needed amount of the “2’s” but there is no reason why the resulting file should be flagged as anything unusual including Drop Frame. The resulting file will have 25 FPS FPS and as long as the colors are correct there would be no issue from the technical side”

Andreas,
I will defer to your knowledgebase, I trust your statement that is can be done,please accept it has not been my experience to have a PAL tape with any cadence other than 2:2 pass standards.

are you joining us at NAB this year? I would love to talk to you and Bjorn.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

Inside look at the IoHD
https://library.creativecow.net/articles/adcock_gary/AJAIOHD.php

[Andreas Kiel]

Hi Gary,

Unfortunately I won’t be there this year, but Björn is there.

Regards
Andreas

Spherico
https://www.spherico.com/filmtools

[Dennis Couzin]

Gary, we’re not anonymous here, so curiosities about who’s accomplished what are easily satisfied by googling, and needn’t clutter the discussion.