[FFmpeg-devel] [PATCH 4/4] avformat/file: increase min/max packet size to 256k for written files

[Michael Niedermayer]

On Mon, Jun 19, 2017 at 12:02:54AM +0200, Marton Balint wrote:
> Buffering more than one packet can be a huge performance improvement for
> encoding files with small packets (e.g. wav) over SMB/CIFS.
> 
> 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 3db9cd0b9e..1d321c4205 100644
> --- a/libavformat/file.c
> +++ b/libavformat/file.c
> @@ -229,6 +229,11 @@ 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->min_packet_size = h->max_packet_size = 262144;

Acked-by: Michael

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Frequently ignored answer#1 FFmpeg bugs should be sent to our bugtracker. User
questions about the command line tools should be sent to the ffmpeg-user ML.
And questions about how to use libav* should be sent to the libav-user ML.
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