sony xavcs 240fps transcode

[imleotw]

Hello Steipal,
I'm trying to transcode sony XAVCS 720p 240fps footage to xdcam50 1080i 59.94 mxf
and I want to play it back for a slow-motion effect,
so I use FPS conversion filter to try , but can not success,
does FFAStrams have any filter to transcode high speed camera
thanks ,



Regards,
Leo

[admin]

Hi,

Try replacing the "FPS Conversion"-filter with a "Custom AviSynth-script"-filter. Create a new preset with this content:
...
#
m_clip = AssumeFPS(m_clip, 50)
# The following MUST be the last line of your script
Return m_clip

-steipal

[imleotw]

Hi Steipal
slow motion is works,but have some issue as below

source footage duration is 60 sec,output duration also 60 sec,
but use player to compare source and output file ,the output file slow motion
just 1~20 sec,21~60 sec is gone.thanks.

Regards
Leo

[admin]

I'm sorry but I have mislead you. Correct settings should be:
...
#
m_clip = AssumeFPS(m_clip, 59.94)
# The following MUST be the last line of your script
Return m_clip

Anyway, the output file should be 4 times as long as the original with this setting. If it cuts before then there must be an error somewhere. Do you have any other source material to test with?

-steipal

[imleotw]

Hi Steipal,

It's works,thank you very much.

Regards,
Leo

[Ghtais]

Hi

I'am trying to run the same workflow except that I have 100 fps XAVC files and I want to transcode to Dnxhd 1080p25 to play them in slow motion in AVID
My script looks like : m_clip = AssumeFPS(m_clip, 25)
It works (I have the slowmotion effect) but it produces clip with the same length than the original while it should be 4 times longuer.
any ideas to help ?
Thank you

[admin]

Hi Ghtais,

Try with m_clip = AssumeFPS(m_clip, 25, sync_audio=true) and see if that helps.

-steinar

[Ghtais]

Hi Steinar

thank you for your advice, now it works !!
Bye