if (avctx->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
// MPEG-1 aspect
- avctx->sample_aspect_ratio = av_d2q(1.0 / ff_mpeg1_aspect[s->aspect_ratio_info], 255);
+ AVRational aspect_inv = av_d2q(ff_mpeg1_aspect[s->aspect_ratio_info], 255);
+ avctx->sample_aspect_ratio = (AVRational) { aspect_inv.den, aspect_inv.num };
} else { // MPEG-2
// MPEG-2 aspect
if (s->aspect_ratio_info > 1) {