On 05.06.2017 19:16, Marton Balint wrote:
Another huge performance improvement when using SMB/CIFS as output.

Signed-off-by: Marton Balint <c...@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;
 }


My tests show ~50% improved throughput rates. LGTM, but I'm not the maintainer of this file.

Thanks,
Tobias

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