+ for (i = 0; i < is->nb_chapters; i++) {
+ AVChapter *in_ch = is->chapters[i], *out_ch;
+ AVMetadataTag *t = NULL;
+ int64_t ts_off = av_rescale_q(start_time - input_files_ts_offset[infile],
+ AV_TIME_BASE_Q, in_ch->time_base);
+ int64_t rt = (recording_time == INT64_MAX) ? INT64_MAX :
+ av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
+
+
+ if (in_ch->end < ts_off)
+ continue;
+ if (rt != INT64_MAX && in_ch->start > rt + ts_off)
+ break;
+
+ out_ch = av_mallocz(sizeof(AVChapter));
+ if (!out_ch)
+ return AVERROR(ENOMEM);
+
+ out_ch->id = in_ch->id;
+ out_ch->time_base = in_ch->time_base;
+ out_ch->start = FFMAX(0, in_ch->start - ts_off);
+ out_ch->end = FFMIN(rt, in_ch->end - ts_off);
+
+ while ((t = av_metadata_get(in_ch->metadata, "", t, AV_METADATA_IGNORE_SUFFIX)))
+ av_metadata_set2(&out_ch->metadata, t->key, t->value, 0);
+
+ os->nb_chapters++;
+ os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
+ if (!os->chapters)
+ return AVERROR(ENOMEM);
+ os->chapters[os->nb_chapters - 1] = out_ch;
+ }
+ return 0;