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ffmpeg: add code to perform ts wrap correction
Fixes ticket1385 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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parent
05a6c625f4
commit
157f956973
15
ffmpeg.c
15
ffmpeg.c
@ -231,6 +231,7 @@ typedef struct InputStream {
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int64_t next_pts; ///< synthetic pts for the next decode frame (in AV_TIME_BASE units)
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int64_t pts; ///< current pts of the decoded frame (in AV_TIME_BASE units)
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int wrap_correction_done;
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double ts_scale;
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int is_start; /* is 1 at the start and after a discontinuity */
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int saw_first_ts;
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@ -3762,6 +3763,20 @@ static int transcode(void)
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if (ist->discard)
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goto discard_packet;
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if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
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uint64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
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uint64_t stime2= stime + (1LL<<ist->st->pts_wrap_bits);
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ist->wrap_correction_done = 1;
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if(pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime && pkt.dts - stime > stime2 - pkt.dts) {
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pkt.dts -= 1LL<<ist->st->pts_wrap_bits;
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ist->wrap_correction_done = 0;
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}
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if(pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime && pkt.pts - stime > stime2 - pkt.pts) {
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pkt.pts -= 1LL<<ist->st->pts_wrap_bits;
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ist->wrap_correction_done = 0;
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}
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}
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if (pkt.dts != AV_NOPTS_VALUE)
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pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
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if (pkt.pts != AV_NOPTS_VALUE)
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