3/2 Pulldown Woes?

[iMaiden]

I am trying to decrease encoding time by segmenting a file and then encoding the segments in parallel. This works and it is faster but when I rewrap the segments there seems to be an extra frame added to a few (or possible all) segments. During the encode there is a framerate conversion from 23.976 to 59.94. Does anybody know how I might get around this issue?

[Guest]

Provide details of your entire process and especially explain this: "when I rewrap the segments".

Your title mentions 3:2 pulldown but your body does not. Are you pulling down to 29.97 and then frame doubling?

[iMaiden]

I am using the splitmovie program to divide my original mov source file into 1 minute segments. I then individually encode each segment from mov to mxf and change the framerate. After completion I use ffmpeg to rewrap.

time cat splitfile_basename-01.mxf splitfile_basename-02.mxf splitfile_basename-03.mxf splitfile_basename-04.mxf splitfile_basename-05.mxf splitfile_basename-06.mxf splitfile_basename-07.mxf splitfile_basename-08.mxf splitfile_basename-09.mxf splitfile_basename-10.mxf splitfile_basename-11.mxf splitfile_basename-12.mxf splitfile_basename-13.mxf splitfile_basename-14.mxf splitfile_basename-15.mxf splitfile_basename-16.mxf splitfile_basename-17.mxf splitfile_basename-18.mxf splitfile_basename-19.mxf splitfile_basename-20.mxf splitfile_basename-21.mxf splitfile_basename-22.mxf splitfile_basename-23.mxf splitfile_basename-24.mxf splitfile_basename-25.mxf splitfile_basename-26.mxf splitfile_basename-27.mxf | ffmbc -y -i - -acodec copy -vcodec copy -map_audio_channel 0.2:0-0.2 whole1.mxf

This creates the single file which plays fine but at the "stitch" points it adds a frame with no audio.

Does this make more sense?

[Guest]

Not to me, because I don't use any of those programs and formats. Maybe someone else can help you.