[Libav-user] FFPlay input_filter and ffsink question
Farkas Szilard Levente
farkas.szilard at gmail.com
Fri Jun 10 09:52:44 CEST 2011
Hello,
In FFplay method configure_video_filters there are two filters used:
1. ffplay input
static AVFilter input_filter =
{
.name = "ffplay_input",
.priv_size = sizeof(FilterPriv),
.init = input_init,
.uninit = input_uninit,
.query_formats = input_query_formats,
.inputs = (AVFilterPad[]) {{ .name = NULL }},
.outputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = input_request_frame,
.config_props = input_config_props, },
{ .name = NULL }},
};
2. ffsink from cmdutils.c
AVFilter ffsink = {
.name = "ffsink",
.priv_size = sizeof(FFSinkContext),
.init = ffsink_init,
.query_formats = ffsink_query_formats,
.inputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.end_frame = null_end_frame,
.min_perms = AV_PERM_READ, },
{ .name = NULL }},
.outputs = (AVFilterPad[]) {{ .name = NULL }},
};
Why are they used only in ffplay? What filter combination should I use
to do what ffplay does in configure_video_filters?
Right now I am using BUFFER filter as SRC, insert NULLSINK as the last
filter and use its input pin as my output.
input --> .. --> last_filter --> [in] nullsink [null] [in] --> output
| |
| |
+------------------------+
Any other way to do what ffplay does?
Thanks,
Szilard Farkas
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