void ff_dv_offset_reset(DVDemuxContext *c, int64_t frame_offset)
{
c->frames= frame_offset;
- if (c->ach)
+ if (c->ach) {
+ if (c->sys) {
c->abytes= av_rescale_q(c->frames, c->sys->time_base,
(AVRational){8, c->ast[0]->codec->bit_rate});
+ }else
+ av_log(c->fctx, AV_LOG_ERROR, "cannot adjust audio bytes\n");
+ }
c->audio_pkt[0].size = c->audio_pkt[1].size = 0;
c->audio_pkt[2].size = c->audio_pkt[3].size = 0;
}