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authorStefano Sabatini <stefasab@gmail.com>2013-12-24 14:38:48 +0100
committerStefano Sabatini <stefasab@gmail.com>2013-12-25 18:42:15 +0100
commitb80cf460903ff69ab62e8f4db95a58675f61e767 (patch)
tree689f7fa5953d16eb826ff318e9e072fb79d9d879
parentca0d8e839e4850aca4f421632fcae57bae96fc8f (diff)
downloadffmpeg-b80cf460903ff69ab62e8f4db95a58675f61e767.tar.gz
doc/protocols/udp,lavf/udp: apply minor documentation fixes
-rw-r--r--doc/protocols.texi24
-rw-r--r--libavformat/udp.c20
2 files changed, 26 insertions, 18 deletions
diff --git a/doc/protocols.texi b/doc/protocols.texi
index 3f3844d9a8..211e125930 100644
--- a/doc/protocols.texi
+++ b/doc/protocols.texi
@@ -979,7 +979,7 @@ ffplay tls://@var{hostname}:@var{port}
User Datagram Protocol.
-The required syntax for a UDP url is:
+The required syntax for an UDP URL is:
@example
udp://@var{hostname}:@var{port}[?@var{options}]
@end example
@@ -994,7 +994,6 @@ UDP socket buffer overruns. The @var{fifo_size} and
The list of supported options follows.
@table @option
-
@item buffer_size=@var{size}
Set the UDP socket buffer size in bytes. This is used both for the
receiving and the sending buffer size.
@@ -1044,25 +1043,34 @@ Survive in case of UDP receiving circular buffer overrun. Default
value is 0.
@item timeout=@var{microseconds}
-In read mode: if no data arrived in more than this time interval, raise error.
+Set raise error timeout, expressed in microseconds.
+
+This option is only relevant in read mode: if no data arrived in more
+than this time interval, raise error.
@end table
-Some usage examples of the UDP protocol with @command{ffmpeg} follow.
+@section Examples
-To stream over UDP to a remote endpoint:
+@itemize
+@item
+Use @command{ffmpeg} to stream over UDP to a remote endpoint:
@example
ffmpeg -i @var{input} -f @var{format} udp://@var{hostname}:@var{port}
@end example
-To stream in mpegts format over UDP using 188 sized UDP packets, using a large input buffer:
+@item
+Use @command{ffmpeg} to stream in mpegts format over UDP using 188
+sized UDP packets, using a large input buffer:
@example
ffmpeg -i @var{input} -f mpegts udp://@var{hostname}:@var{port}?pkt_size=188&buffer_size=65535
@end example
-To receive over UDP from a remote endpoint:
+@item
+Use @command{ffmpeg} to receive over UDP from a remote endpoint:
@example
-ffmpeg -i udp://[@var{multicast-address}]:@var{port}
+ffmpeg -i udp://[@var{multicast-address}]:@var{port} ...
@end example
+@end itemize
@section unix
diff --git a/libavformat/udp.c b/libavformat/udp.c
index 813978045f..047ff7c6d9 100644
--- a/libavformat/udp.c
+++ b/libavformat/udp.c
@@ -91,17 +91,17 @@ typedef struct {
#define D AV_OPT_FLAG_DECODING_PARAM
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
-{"buffer_size", "Socket buffer size in bytes", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D|E },
-{"localport", "Set local port to bind to", OFFSET(local_port), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D|E },
-{"localaddr", "Choose local IP address", OFFSET(local_addr), AV_OPT_TYPE_STRING, {.str = ""}, 0, 0, D|E },
-{"pkt_size", "Set size of UDP packets", OFFSET(packet_size), AV_OPT_TYPE_INT, {.i64 = 1472}, 0, INT_MAX, D|E },
-{"reuse", "Explicitly allow or disallow reusing UDP sockets", OFFSET(reuse_socket), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D|E },
-{"ttl", "Set the time to live value (for multicast only)", OFFSET(ttl), AV_OPT_TYPE_INT, {.i64 = 16}, 0, INT_MAX, E },
-{"connect", "Should connect() be called on socket", OFFSET(is_connected), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D|E },
+{"buffer_size", "set packet buffer size in bytes", OFFSET(buffer_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D|E },
+{"localport", "set local port to bind to", OFFSET(local_port), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D|E },
+{"localaddr", "choose local IP address", OFFSET(local_addr), AV_OPT_TYPE_STRING, {.str = ""}, 0, 0, D|E },
+{"pkt_size", "set size of UDP packets", OFFSET(packet_size), AV_OPT_TYPE_INT, {.i64 = 1472}, 0, INT_MAX, D|E },
+{"reuse", "explicitly allow or disallow reusing UDP sockets", OFFSET(reuse_socket), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D|E },
+{"ttl", "set the time to live value (for multicast only)", OFFSET(ttl), AV_OPT_TYPE_INT, {.i64 = 16}, 0, INT_MAX, E },
+{"connect", "set if connect() should be called on socket", OFFSET(is_connected), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D|E },
/* TODO 'sources', 'block' option */
-{"fifo_size", "Set the UDP receiving circular buffer size, expressed as a number of packets with size of 188 bytes", OFFSET(circular_buffer_size), AV_OPT_TYPE_INT, {.i64 = 7*4096}, 0, INT_MAX, D },
-{"overrun_nonfatal", "Survive in case of UDP receiving circular buffer overrun", OFFSET(overrun_nonfatal), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D },
-{"timeout", "In read mode: if no data arrived in more than this time interval, raise error", OFFSET(timeout), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D },
+{"fifo_size", "set the UDP receiving circular buffer size, expressed as a number of packets with size of 188 bytes", OFFSET(circular_buffer_size), AV_OPT_TYPE_INT, {.i64 = 7*4096}, 0, INT_MAX, D },
+{"overrun_nonfatal", "survive in case of UDP receiving circular buffer overrun", OFFSET(overrun_nonfatal), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D },
+{"timeout", "set raise error timeout (only in read mode)", OFFSET(timeout), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D },
{NULL}
};