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ffmpeg_opt: add -to option to specify stop time

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Signed-off-by: Jean First <jeanfirst@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Jean First 2013-02-27 00:18:41 +01:00 committed by Michael Niedermayer
parent 997a36238f
commit 2d7044683f
3 changed files with 26 additions and 0 deletions
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8
doc/ffmpeg.texi
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@ -256,6 +256,14 @@ libx264, and the 138th audio, which will be encoded with libvorbis.
Stop writing the output after its duration reaches @var{duration}.
@var{duration} may be a number in seconds, or in @code{hh:mm:ss[.xxx]} form.
-to and -t are mutually exclusive and -t has priority.
@item -to @var{position} (@emph{output})
Stop writing the output at @var{position}.
@var{position} may be a number in seconds, or in @code{hh:mm:ss[.xxx]} form.
-to and -t are mutually exclusive and -t has priority.
@item -fs @var{limit_size} (@emph{output})
Set the file size limit, expressed in bytes.

1
ffmpeg.h
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@ -114,6 +114,7 @@ typedef struct OptionsContext {
int chapters_input_file;
int64_t recording_time;
int64_t stop_time;
uint64_t limit_filesize;
float mux_preload;
float mux_max_delay;

17
ffmpeg_opt.c
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@ -145,6 +145,7 @@ static void init_options(OptionsContext *o, int is_input)
" consider fixing your command line.\n");
} else
o->recording_time = INT64_MAX;
o->stop_time = INT64_MAX;
o->mux_max_delay = 0.7;
o->limit_filesize = UINT64_MAX;
o->chapters_input_file = INT_MAX;
@ -1656,6 +1657,20 @@ loop_end:
exit(1);
}
if (o->stop_time != INT64_MAX && o->recording_time != INT64_MAX) {
o->stop_time = INT64_MAX;
av_log(NULL, AV_LOG_WARNING, "-t and -to cannot be used together; using -t.\n");
}
if (o->stop_time != INT64_MAX && o->recording_time == INT64_MAX) {
if (o->stop_time <= o->start_time) {
av_log(NULL, AV_LOG_WARNING, "-to value smaller than -ss; ignoring -to.\n");
o->stop_time = INT64_MAX;
} else {
o->recording_time = o->stop_time - o->start_time;
}
}
GROW_ARRAY(output_files, nb_output_files);
if (!(output_files[nb_output_files - 1] = av_mallocz(sizeof(*output_files[0]))))
exit(1);
@ -2389,6 +2404,8 @@ const OptionDef options[] = {
{ "t", HAS_ARG | OPT_TIME | OPT_OFFSET, { .off = OFFSET(recording_time) },
"record or transcode \"duration\" seconds of audio/video",
"duration" },
{ "to", HAS_ARG | OPT_TIME | OPT_OFFSET, { .off = OFFSET(stop_time) },
"record or transcode stop time", "time_stop" },
{ "fs", HAS_ARG | OPT_INT64 | OPT_OFFSET, { .off = OFFSET(limit_filesize) },
"set the limit file size in bytes", "limit_size" },
{ "ss", HAS_ARG | OPT_TIME | OPT_OFFSET, { .off = OFFSET(start_time) },