#10136: Can't convert color range with sws_scale
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Reporter: diogo.r | Owner: (none)
Type: defect | Status: new
Priority: normal | Component: swscale
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by diogo.r):
According with this comment
(http://git.videolan.org/?p=ffmpeg.git;a=commitdiff;h=e645a1ddb90a863e129108aad9aa7e2d417f3615)
the problem is that when setting color range options after initializing
sws_scale, some fast paths might already be chosen and we can't change it
anymore.
I'm wondering if it works when I set everything at the beginning, like so:
{{{
SwsContext *sws_ctx = (struct SwsContext*)sws_alloc_context();
av_opt_set_int(sws_ctx, "srcw", width, 0);
av_opt_set_int(sws_ctx, "srch", height, 0);
av_opt_set_int(sws_ctx, "src_format", in_pix_fmt, 0);
av_opt_set_int(sws_ctx, "dstw", width, 0);
av_opt_set_int(sws_ctx, "dsth", height, 0);
av_opt_set_int(sws_ctx, "dst_format", out_pix_fmt, 0);
av_opt_set_int(sws_ctx, "sws_flags", SWS_BILINEAR, 0);
av_opt_set_int(sws_ctx, "param0", NULL, 0);
av_opt_set_int(sws_ctx, "param1", NULL, 0);
av_opt_set_int(sws_ctx, "src_range", 1, 0);
// av_opt_set_int(sws_ctx, "dst_range", 1, 0);
int res = sws_init_context(sws_ctx, NULL, NULL);
}}}
It seems to work, is that the proper way to do it? If that's the case, it
might be helpful to return an error for my first attempt.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/10136#comment:2>
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