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cmdutils: Filter dst/srcw/h

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Dimensions / pixel formats for scaling must be set through the -s / pix_fmt options
or the scale / format filters. Otherwise there are mismatches between whet is
in/output to the scaler and for what the scaler is configured

Fixes Ticket4856

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-09-19 21:23:11 +02:00
parent e3cf978cdd
commit a0af9fd954
1 changed files with 6 additions and 0 deletions
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6
cmdutils.c
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@ -563,6 +563,12 @@ int opt_default(void *optctx, const char *opt, const char *arg)
struct SwsContext *sws = sws_alloc_context();
int ret = av_opt_set(sws, opt, arg, 0);
sws_freeContext(sws);
if (!strcmp(opt, "srcw") || !strcmp(opt, "srch") ||
!strcmp(opt, "dstw") || !strcmp(opt, "dsth") ||
!strcmp(opt, "src_format") || !strcmp(opt, "dst_format")) {
av_log(NULL, AV_LOG_ERROR, "Directly using swscale dimensions/format options is not supported, please use the -s or -pix_fmt options\n");
return AVERROR(EINVAL);
}
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error setting option %s.\n", opt);
return ret;