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ffmpeg: add option stats_period

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At present, progress stats are updated at a hardcoded interval of
half a second. For long processes, this can lead to bloated
logs and progress reports.

Users can now set a custom period using option -stats_period
Default is kept at 0.5 seconds.
This commit is contained in:
Gyan Doshi 2020-12-21 14:16:49 +05:30
parent 686c07fb1e
commit 842714b5cb
4 changed files with 26 additions and 2 deletions
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7
doc/ffmpeg.texi
View File

@ -675,14 +675,19 @@ Specify the preset for matching stream(s).
Print encoding progress/statistics. It is on by default, to explicitly
disable it you need to specify @code{-nostats}.
@item -stats_period @var{time} (@emph{global})
Set period at which encoding progress/statistics are updated. Default is 0.5 seconds.
@item -progress @var{url} (@emph{global})
Send program-friendly progress information to @var{url}.
Progress information is written approximately every second and at the end of
Progress information is written periodically and at the end of
the encoding process. It is made of "@var{key}=@var{value}" lines. @var{key}
consists of only alphanumeric characters. The last key of a sequence of
progress information is always "progress".
The update period is set using @code{-stats_period}.
@anchor{stdin option}
@item -stdin
Enable interaction on standard input. On by default unless standard input is

2
fftools/ffmpeg.c
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@ -1699,7 +1699,7 @@ static void print_report(int is_last_report, int64_t timer_start, int64_t cur_ti
last_time = cur_time;
return;
}
if ((cur_time - last_time) < 500000)
if ((cur_time - last_time) < stats_period)
return;
last_time = cur_time;
}

1
fftools/ffmpeg.h
View File

@ -614,6 +614,7 @@ extern int debug_ts;
extern int exit_on_error;
extern int abort_on_flags;
extern int print_stats;
extern int64_t stats_period;
extern int qp_hist;
extern int stdin_interaction;
extern int frame_bits_per_raw_sample;

18
fftools/ffmpeg_opt.c
View File

@ -174,6 +174,7 @@ int filter_nbthreads = 0;
int filter_complex_nbthreads = 0;
int vstats_version = 2;
int auto_conversion_filters = 1;
int64_t stats_period = 500000;
static int intra_only = 0;
@ -282,6 +283,21 @@ static int opt_abort_on(void *optctx, const char *opt, const char *arg)
return av_opt_eval_flags(&pclass, &opts[0], arg, &abort_on_flags);
}
static int opt_stats_period(void *optctx, const char *opt, const char *arg)
{
int64_t user_stats_period = parse_time_or_die(opt, arg, 1);
if (user_stats_period <= 0) {
av_log(NULL, AV_LOG_ERROR, "stats_period %s must be positive.\n", arg);
return AVERROR(EINVAL);
}
stats_period = user_stats_period;
av_log(NULL, AV_LOG_INFO, "ffmpeg stats and -progress period set to %s.\n", arg);
return 0;
}
static int opt_sameq(void *optctx, const char *opt, const char *arg)
{
av_log(NULL, AV_LOG_ERROR, "Option '%s' was removed. "
@ -3557,6 +3573,8 @@ const OptionDef options[] = {
"enable automatic conversion filters globally" },
{ "stats", OPT_BOOL, { &print_stats },
"print progress report during encoding", },
{ "stats_period", HAS_ARG | OPT_EXPERT, { .func_arg = opt_stats_period },
"set the period at which ffmpeg updates stats and -progress output", "time" },
{ "attach", HAS_ARG | OPT_PERFILE | OPT_EXPERT |
OPT_OUTPUT, { .func_arg = opt_attach },
"add an attachment to the output file", "filename" },