avformat/subtitles: check lower bound for duration overlap seeking.
(cherry picked from commit 1ca4bf930b
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@@ -119,10 +119,11 @@ int ff_subtitles_queue_seek(FFDemuxSubtitlesQueue *q, AVFormatContext *s, int st
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/* look back in the latest subtitles for overlapping subtitles */
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ts_selected = q->subs[idx].pts;
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for (i = idx - 1; i >= 0; i--) {
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int64_t pts = q->subs[i].pts;
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if (q->subs[i].duration <= 0 ||
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(stream_index != -1 && q->subs[i].stream_index != stream_index))
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continue;
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if (q->subs[i].pts > ts_selected - q->subs[i].duration)
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if (pts >= min_ts && pts > ts_selected - q->subs[i].duration)
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idx = i;
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else
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break;
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