From: Björn Axelsson <[email protected]>
The FLV muxer tries to update the header in write_trailer, which is
impossible if writing to a pipe or network stream. Don't write header
data if seeking to the header fails.
---
libavformat/flvenc.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/libavformat/flvenc.c b/libavformat/flvenc.c
index 8aeea96..ff6d14a 100644
--- a/libavformat/flvenc.c
+++ b/libavformat/flvenc.c
@@ -403,10 +403,14 @@ static int flv_write_trailer(AVFormatContext *s)
file_size = avio_tell(pb);
/* update information */
- avio_seek(pb, flv->duration_offset, SEEK_SET);
- put_amf_double(pb, flv->duration / (double)1000);
- avio_seek(pb, flv->filesize_offset, SEEK_SET);
- put_amf_double(pb, file_size);
+ if (avio_seek(pb, flv->duration_offset, SEEK_SET) < 0)
+ av_log(s, AV_LOG_WARNING, "Failed to update header with correct
duration.\n");
+ else
+ put_amf_double(pb, flv->duration / (double)1000);
+ if (avio_seek(pb, flv->filesize_offset, SEEK_SET) < 0)
+ av_log(s, AV_LOG_WARNING, "Failed to update header with correct
filesize.\n");
+ else
+ put_amf_double(pb, file_size);
avio_seek(pb, file_size, SEEK_SET);
return 0;
--
1.7.9.4
_______________________________________________
libav-devel mailing list
[email protected]
https://lists.libav.org/mailman/listinfo/libav-devel
