----- Original Message -----
From: "Carl Eugen Hoyos" <ceffm...@gmail.com>
To: "FFmpeg user questions" <ffmpeg-user@ffmpeg.org>
Sent: Tuesday, May 02, 2017 4:31 PM
Subject: Re: [FFmpeg-user] Avid opAtom trouble
2017-05-02 14:46 GMT+02:00 Bouke (VideoToolShed)
<bo...@videotoolshed.com>:
Toying around with Avid opAtom mxf, generating test clips.
When I look at the clip in Avid, the bin info shows a raster dimension of
1920x1088, pixel aspect ratio of 1.007 (expected 1920x1080 / 1.000)
And of course, when editing the clip into a seqence, frameflex kicks in.
same line but output to Mov and AMA the clip in does give the
expected result.
What happens if you use FFmpeg to remux the working mov file
into mxf?
-vcodec copy NEEDS the FPS, or FFmpeg bitches. When I add -r 25, it does the
re-wrap, but output gives the same trouble in Avid.
What happens if you use FFmpeg to remux the broken mxf file
into mov?
FFmpeg reports the frame size has changed from 1088 to 1080, and all is
well.
(Except the UUID or something is copied over, so doing the dance twice to
two filenames makes Avid refuse to import both, as it 'knows' it already...)
Nice details, with -vcodec copy also timecode comes across (From MXF to MOV
and vice-versa.)
Also the interlace flag is set without issue.
Can you provide a working mxf file similar to the one FFmpeg
produces?
Yes, see here:
Download link
https://wetransfer.com/downloads/d35f135d397837227c965ee7b95ea7bf20170502152440/018e64f2872c5c6e4de8bca6e08ca3f620170502152440/fd3691
Note, this is an AVID generated mixdown of the (good) AMA linked MOV. Tc has
changed to seqence TC (00:00:00:00)
(I believe I remember what the issue is but would like to
verify.)
Let me know if you need more, and thanks!
Bouke
Carl Eugen
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