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mux/chunked interleaver: better align duration chunks.

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This code causes the chunking to tend toward more optimal
alignment between streams.
The first chunks can still be less optimal aligned
This commit is contained in:
Michael Niedermayer
2013-01-16 00:03:36 +01:00
parent 69a96f9d4c
commit 46730e7a0c
1 changed files with 8 additions and 2 deletions
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10
libavformat/mux.c
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@@ -555,9 +555,15 @@ int ff_interleave_add_packet(AVFormatContext *s, AVPacket *pkt,
st->interleaver_chunk_duration += pkt->duration;
if ( (s->max_chunk_size && st->interleaver_chunk_size > s->max_chunk_size)
|| (max && st->interleaver_chunk_duration > max)) {
st->interleaver_chunk_size =
st->interleaver_chunk_duration = 0;
st->interleaver_chunk_size = 0;
this_pktl->pkt.flags |= CHUNK_START;
if (max && st->interleaver_chunk_duration > max) {
int64_t syncoffset = (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)*max/2;
int64_t syncto = av_rescale(pkt->dts + syncoffset, 1, max)*max - syncoffset;
st->interleaver_chunk_duration += (pkt->dts - syncto)/8 - max;
} else
st->interleaver_chunk_duration = 0;
}
}
if (*next_point) {