ff_mjpeg_escape_FF(pbc, s->esc_pos);
- if((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height)
+ if((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height - 1)
put_marker(pbc, RST0 + (mb_y&7));
s->esc_pos = put_bits_count(pbc) >> 3;
fail: