[FFmpeg-devel] DPX Encoder

Peter Ross pross at xvid.org
Sat Mar 26 00:47:13 CET 2011

On Fri, Mar 25, 2011 at 12:30:23PM -0500, Enrique Ramirez wrote:
> Hello all,
> I am in need of a DPX Encoder for a project I am working on. Unfortunately
> the ImageMagick encoder does not fit the bill. Basically we are taking a
> folder of DPX files and converting them to a v210 encoded AVI file. The AVI
> file is then fed to an engine that compresses and sends over the wire, we
> then need to convert that AVI file back to the DPX files and folder
> structure. I can step through it using FFmpeg to decode the DPX to the avi
> file and then use FFmpeg to convert back to image file and then use
> ImageMagick's convert to turn back to DPX. The problem is the overhead that
> would need to be installed on the systems for ImageMagick and the conversion
> command can't be done on one line. And the other main deciding factor is
> that they want it done with FFmpeg.

so you are converting:
   DPX (RGB) -> V210 (10-bit YUV 4:2:2) -> wire compression -> back to DPX (RGB)

> I sent a few emails directly to individuals who might be able to help, but
> thought I would send here too to see if anyone might have some time to help
> out. I truly apologize for the short notice. But I thought I had it working
> with ImageMagick and then was told it needs to be strictly FFmpeg.  I need
> something by Wed or so. Is this doable?

An FFmpeg DPX encoder is certainly doable. So is a manned Mars exploration, btw.

What number of bits per R/G/B component are required for DPX encoder?

Providing a sample DPX image that is being fed into the pipleline would also
be useful.

-- Peter
(A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
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