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ffmpeg_opt: allow the user to ignore unused stream maps 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Rodger Combs 2015-07-01 14:14:26 -05:00 committed by Michael Niedermayer
parent 8234f0e3b4
commit 2375a85c36
1 changed files with 10 additions and 2 deletions
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12
ffmpeg_opt.c
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@ -231,6 +231,7 @@ static int opt_map(void *optctx, const char *opt, const char *arg)
int sync_file_idx = -1, sync_stream_idx = 0;
char *p, *sync;
char *map;
char *allow_unused;
if (*arg == '-') {
negative = 1;
@ -275,6 +276,8 @@ static int opt_map(void *optctx, const char *opt, const char *arg)
exit_program(1);
}
} else {
if (allow_unused = strchr(map, '?'))
*allow_unused = 0;
file_idx = strtol(map, &p, 0);
if (file_idx >= nb_input_files || file_idx < 0) {
av_log(NULL, AV_LOG_FATAL, "Invalid input file index: %d.\n", file_idx);
@ -312,8 +315,13 @@ static int opt_map(void *optctx, const char *opt, const char *arg)
}
if (!m) {
av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n", arg);
exit_program(1);
if (allow_unused) {
av_log(NULL, AV_LOG_VERBOSE, "Stream map '%s' matches no streams; ignoring.\n", arg);
} else {
av_log(NULL, AV_LOG_FATAL, "Stream map '%s' matches no streams.\n"
"To ignore this, add a trailing '?' to the map.\n", arg);
exit_program(1);
}
}
av_freep(&map);