v4l2_get_timebase   69 libavcodec/v4l2_buffers.c     v4l2_pts = av_rescale_q(pts, v4l2_get_timebase(out), v4l2_timebase);
v4l2_get_timebase   82 libavcodec/v4l2_buffers.c     return av_rescale_q(v4l2_pts, v4l2_timebase, v4l2_get_timebase(avbuf));