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ffmpeg: Add basic support to mux multiple programs

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-12-10 21:01:19 +01:00
parent 676a93f2d8
commit 8f948b6244
3 changed files with 45 additions and 0 deletions
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5
doc/ffmpeg.texi
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@ -355,6 +355,11 @@ To set the language of the first audio stream:
ffmpeg -i INPUT -metadata:s:a:0 language=eng OUTPUT
@end example
@item -program [title=@var{title}:]st=@var{stream}[:st=@var{stream}...] (@emph{output})
Creates a program with the specified @var{title} and adds the specified
@var{stream}(s) to it.
@item -target @var{type} (@emph{output})
Specify target file type (@code{vcd}, @code{svcd}, @code{dvd}, @code{dv},
@code{dv50}). @var{type} may be prefixed with @code{pal-}, @code{ntsc-} or

2
ffmpeg.h
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@ -216,6 +216,8 @@ typedef struct OptionsContext {
int nb_discard;
SpecifierOpt *disposition;
int nb_disposition;
SpecifierOpt *program;
int nb_program;
} OptionsContext;
typedef struct InputFilter {

38
ffmpeg_opt.c
View File

@ -2414,6 +2414,42 @@ loop_end:
}
}
/* process manually set programs */
for (i = 0; i < o->nb_program; i++) {
const char *p = o->program[i].u.str;
int progid = i+1;
AVProgram *program = av_new_program(oc, progid);
while(*p) {
const char *p2 = av_get_token(&p, ":");
char *key;
if (!p2)
break;
if(*p) p++;
key = av_get_token(&p2, "=");
if (!key) {
av_log(NULL, AV_LOG_FATAL,
"No '=' character in program string %s.\n",
p2);
exit_program(1);
}
if (!*p2)
exit_program(1);
p2++;
if (!strcmp(key, "title")) {
av_dict_set(&program->metadata, "title", p2, 0);
} else if (!strcmp(key, "st")) {
int st_num = strtol(p2, NULL, 0);
av_program_add_stream_index(oc, progid, st_num);
} else {
av_log(NULL, AV_LOG_FATAL, "Unknown program key %s.\n", key);
exit_program(1);
}
}
}
return 0;
}
@ -3093,6 +3129,8 @@ const OptionDef options[] = {
"set the recording timestamp ('now' to set the current time)", "time" },
{ "metadata", HAS_ARG | OPT_STRING | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(metadata) },
"add metadata", "string=string" },
{ "program", HAS_ARG | OPT_STRING | OPT_SPEC | OPT_OUTPUT, { .off = OFFSET(program) },
"add program with specified streams", "title=string:st=number..." },
{ "dframes", HAS_ARG | OPT_PERFILE | OPT_EXPERT |
OPT_OUTPUT, { .func_arg = opt_data_frames },
"set the number of data frames to output", "number" },