[FFmpeg-user] dpx image sequence to ffv1 mkv issues

Camara Caamaño, Xavier xcamara at gencat.cat
Mon Nov 6 15:35:14 EET 2017

Thanks Carl and Kieran,

The version is not an issue at all, just curious because I saw in this post:
that the recreated DPX files were also version 2.



-----Missatge original-----
De: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] En nom de Carl Eugen Hoyos
Enviat: dilluns, 6 de novembre de 2017 13:41
Per a: FFmpeg user questions <ffmpeg-user at ffmpeg.org>
Tema: Re: [FFmpeg-user] dpx image sequence to ffv1 mkv issues

2017-11-06 13:21 GMT+01:00 Camara Caamaño, Xavier <xcamara at gencat.cat>:

> I updated the Windows build for ffmpeg and at least the error doesn't show up.


> I still get the warning of:
> Cannot allocate worst case packet size, the encoding could fail.

This is expected for high-res input, you will get an error if encoding fails (afair).

> However, after wrapping the 6k 16bit dpx sequence into ffv1.mkv and 
> de-wrapping again into dpx, the checksums are the same, so it's a good 
> thing.
> The last issue I came up to was the DPX version. My original DPX file 
> is DPX version 2

FFmpeg only supports writing dpx version 1 files.
Why is that an issue for you?

Carl Eugen
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