FFAStrans forum

Posted: **Wed Mar 17, 2021 7:34 pm**

Hello

I'm trying to set up a work flow to either transcode or transwrap files to XDCAM HD422 1080i59.94 and output as MXF OP-Atom for an Avid Interplay system.

Currently the workflow will work if I try files that are not already XDCAM. However, if I take an MXF OP1a XDCAM HD422 1080i59.94, and run it through the workflow, I get an error that says....

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[mxf @ 000001af4c65c700] Unsupported frame rate 2997/100. Set -strict option to 'unofficial' or lower in order to allow it!
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:8 --

I've traced this down to the ffmpeg encode line in which it uses

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-r 29.97

I took the command line from the log and ran it myself changing that line to

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-r 30000/1001

and I can get it to encode.

Is this a bug or is there a reason why it's set to 29.97 instead of 30000/1001?

Is there anyway for me to make this modification within the Encoders-->XDCAM-HD processor so I can make this work for both XDCAM and non XDCAM source files?

Thanks

Posted: **Thu Mar 18, 2021 4:30 pm**

Hi,

welcome to the Forum and thanks for using FFAStrans.

Sorry for the delay, it is because the case is relatively hard to recreate for us (last but not least because all members work with 25/50 fps).
It could help if you upload a minimal source file example and your workflow to ffastrans.com/share into the samples folder (create a new folder pls)

Posted: **Thu Mar 18, 2021 6:47 pm**

Thanks,

I've created a folder and uploaded a sample of a H264 MOV and a XDCAM 1080i59.94 file that I am trying to transwrap to MXF OPAtom XDCAM 1080i59.94

I've uploaded the workflow as well.

Posted: **Fri Mar 19, 2021 7:17 am**

Hi frubsen,

This looks like an ffmpeg bug and not strictly related to FFAStrans. However, it should be easy to fix this on our side. So expect a fix in the upcoming 1.2.1 release.

Thanks for the bug report and the files!

-steinar

Posted: **Fri Mar 19, 2021 7:29 pm**

Great, thanks!

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