diff options
| -rw-r--r-- | doc/filters.texi | 3 | ||||
| -rw-r--r-- | libavfilter/vf_psnr.c | 6 |
2 files changed, 6 insertions, 3 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 1af0a72f24..486398d31c 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -8939,7 +8939,8 @@ The description of the accepted parameters follows. @table @option @item stats_file, f If specified the filter will use the named file to save the PSNR of -each individual frame. +each individual frame. When filename equals "-" the data is sent to +standard output. @end table The file printed if @var{stats_file} is selected, contains a sequence of diff --git a/libavfilter/vf_psnr.c b/libavfilter/vf_psnr.c index a01b2c12ce..bfb0711950 100644 --- a/libavfilter/vf_psnr.c +++ b/libavfilter/vf_psnr.c @@ -193,7 +193,9 @@ static av_cold int init(AVFilterContext *ctx) s->min_mse = +INFINITY; s->max_mse = -INFINITY; - if (s->stats_file_str) { + if (!strcmp(s->stats_file_str, "-")) { + s->stats_file = stdout; + } else if (s->stats_file_str) { s->stats_file = fopen(s->stats_file_str, "w"); if (!s->stats_file) { int err = AVERROR(errno); @@ -334,7 +336,7 @@ static av_cold void uninit(AVFilterContext *ctx) ff_dualinput_uninit(&s->dinput); - if (s->stats_file) + if (s->stats_file && s->stats_file != stdout) fclose(s->stats_file); } |