[FFmpeg-devel] [PATCH] avformat/file: increase max packet size to 256k for written files

[Marton Balint]

Another huge performance improvement when using SMB/CIFS as output.

Signed-off-by: Marton Balint <cus at passwd.hu>
---
 libavformat/file.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavformat/file.c b/libavformat/file.c
index 264542a36a..ae7231a484 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -227,6 +227,11 @@ static int file_open(URLContext *h, const char *filename, int flags)
 
     h->is_streamed = !fstat(fd, &st) && S_ISFIFO(st.st_mode);
 
+    /* Buffer writes more than the default 32k to improve throughput especially
+     * with networked file systems */
+    if (!h->is_streamed && flags & AVIO_FLAG_WRITE)
+        h->max_packet_size = 262144;
+
     return 0;
 }
 
-- 
2.12.3