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[FFmpeg-devel,01/24] lavf/mux: do not apply max_interleave_delta to subtitles

Message ID 20231104092125.10213-2-anton@khirnov.net
State Accepted
Commit de85815bfaa3e25b7ea46ffc837983df216fcd1b
Headers show
Series [FFmpeg-devel,01/24] lavf/mux: do not apply max_interleave_delta to subtitles | expand

Commit Message

Anton Khirnov Nov. 4, 2023, 7:56 a.m. UTC 
It is common for subtitle streams to have large gaps between packets.
When the caller is interleaving packets from multiple files, it can
easily happen that two successive subtitle packets trigger this limit,
even though no excessive buffering is happening.
---
 libavformat/mux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/libavformat/mux.c b/libavformat/mux.c
index c7877c5d98..de10d2c008 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -995,7 +995,7 @@  int ff_interleave_packet_per_dts(AVFormatContext *s, AVPacket *pkt,
             const PacketListEntry *const last = sti->last_in_packet_buffer;
             int64_t last_dts;
 
-            if (!last)
+            if (!last || st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
                 continue;
 
             last_dts = av_rescale_q(last->pkt.dts,