[FFmpeg-user] VC3 coding

[Tim Nicholson]

I have had VC3 coding running happily with:-

ffmpeg -i <infile> -s 1920x1080 -r 25 -vcodec dnxhd -b 120Mbps -f
rawvideo -flags +ildct out.dnx

Which I then mxf wrap and all is good.

After updating ffmpeg to a very recent git I modified the line to

ffmpeg -i <infile> -s 1920x1080 -r 25 -vcodec dnxhd -b 120M -f rawvideo
-flags +ildct out.dnx

To reflect the API change for bit rate.

Which processes happily. However after mxfwrapping and inspecting in
Avid I only get the top half of the picture...

Since the only change had been ffmpeg, and the minor tweak to the
command line I believe that this must be due to some internal change in
ffmpeg. The question is what?
-- 
Tim

http://www.bbc.co.uk/
This e-mail (and any attachments) is confidential and may contain personal views which are not the views of the BBC unless specifically stated.
If you have received it in error, please delete it from your system.
Do not use, copy or disclose the information in any way nor act in reliance on it and notify the sender immediately.
Please note that the BBC monitors e-mails sent or received.
Further communication will signify your consent to this.