[Libav-user] Problem reading motion vectors

Paul B Mahol onemda at gmail.com
Tue Jul 30 13:00:19 CEST 2013

On 7/30/13, Luis Brocan Broki <brocanhu86 at gmail.com> wrote:
> Hi everyone!
> I'm currently developing a program that reads the motion_val table in each
> frame for doing some computations. The problem if since i've upgraded to
> ffmpeg 2.0 (i come from avcodec-53 version), the second level of motion_val
> table is always null, and  m_pFrame->motion_subsample_log2 is always 0.
> I've tested agains mp4 (h264) videos, xvid videos, mpeg2 videos, without
> sucess.
> Any ideas? what i'm doing wrong? it's now necessary to activate some kind
> of flag? or use a filter? or how?
> Thanks in advance!!

I can't find motion_subsample_log2 anywhere in codebase.

More information about the Libav-user mailing list