asset->aspect_ratio = ff->ff_aspect_ratio(0);
printf("ff_aspect_ratio, %f \n", asset->aspect_ratio);
if (!asset->interlace_mode) asset->interlace_mode = ff->ff_interlace(0);
asset->aspect_ratio = ff->ff_aspect_ratio(0);
printf("ff_aspect_ratio, %f \n", asset->aspect_ratio);
if (!asset->interlace_mode) asset->interlace_mode = ff->ff_interlace(0);