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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-08-03 14:39:46 +0200 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2016-01-19 14:24:34 +0200 |
| commit | 09f4822e4eaf61513b9092414450f3ae920ccd9d (patch) | |
| tree | df77e244cb94285a5df20c7ea29b3f50917b05c6 /libavformat | |
| parent | 03ef89faf23c4851848208c9fe004cd9ef690cec (diff) | |
| download | ffmpeg-09f4822e4eaf61513b9092414450f3ae920ccd9d.tar.gz | |
flvdec: perform duration search just once
When loading a truncated flv file, it would previously try to do a seek to
the end of every packet read. For some input protocols (such as http), such
repeated seek attempts are cripple the reading performance.
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/flvdec.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index 96504e704d..cf9769a439 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -57,6 +57,7 @@ typedef struct FLVContext { } validate_index[2]; int validate_next; int validate_count; + int searched_for_end; } FLVContext; static int flv_probe(AVProbeData *p) @@ -836,7 +837,8 @@ skip: // if not streamed and no duration from metadata then seek to end to find // the duration from the timestamps - if (s->pb->seekable && (!s->duration || s->duration == AV_NOPTS_VALUE)) { + if (s->pb->seekable && (!s->duration || s->duration == AV_NOPTS_VALUE) && + !flv->searched_for_end) { int size; const int64_t pos = avio_tell(s->pb); // Read the last 4 bytes of the file, this should be the size of the @@ -853,6 +855,7 @@ skip: s->duration = ts * (int64_t)AV_TIME_BASE / 1000; } avio_seek(s->pb, pos, SEEK_SET); + flv->searched_for_end = 1; } if (is_audio) { |