From: Linjie Fu <linjie.justin...@gmail.com>
Printed verbose log doesn't match the sws_flags specified in the cmdline
for simple filter graph.
ffmpeg .. -sws_flags bicubic ..
[auto_scaler_0] w:iw h:ih flags:'' interl:0
[auto_scaler_0] w:310 h:449 fmt:yuva420p sar:0/1 -> w:310 h:449 fmt:yuv420p
sar:0/1 flags:0x0
Filter complex doesn't have this issue as mentioned in 12e7e1d03, the
auto-inserted scaler accepts sws_flags in filtergraph complex which
overrides the 'flags' option for vf_scale and dump it as a verbose log:
ffmpeg .. -filter_complex "sws_flags=bicubic;format=nv12" ..
[auto_scaler_0] w:iw h:ih flags:'bicubic' interl:0
[auto_scaler_0] w:310 h:449 fmt:yuva420p sar:0/1 -> w:310 h:449 fmt:nv12
sar:0/1 flags:0x2
To catch the difference, dump the exact sws_flags which is passed to
libswscale.
[auto_scaler_0] swscale_options:'sws_flags=bicubic'
Signed-off-by: Linjie Fu <linjie.justin...@gmail.com>
---
libavfilter/vf_scale.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/libavfilter/vf_scale.c b/libavfilter/vf_scale.c
index aa855b894a..f994217bdc 100644
--- a/libavfilter/vf_scale.c
+++ b/libavfilter/vf_scale.c
@@ -552,11 +552,17 @@ static int config_props(AVFilterLink *outlink)
scale->out_range == AVCOL_RANGE_JPEG, 0);
if (scale->opts) {
+ char args[512];
+ args[0] = 0;
AVDictionaryEntry *e = NULL;
while ((e = av_dict_get(scale->opts, "", e,
AV_DICT_IGNORE_SUFFIX))) {
if ((ret = av_opt_set(*s, e->key, e->value, 0)) < 0)
return ret;
+ av_strlcatf(args, sizeof(args), "%s=%s:", e->key,
e->value);
}
+ if (strlen(args))
+ args[strlen(args)-1] = 0;
+ av_log(ctx, AV_LOG_VERBOSE, "swscale_options:'%s'\n", (char
*)av_x_if_null(args, ""));
}
/* Override YUV420P default settings to have the correct (MPEG-2)
chroma positions
* MPEG-2 chroma positions are used by convention
--
2.31.1
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