On Wed, May 14, 2025 at 5:05 AM Andrew Randrianasulu <
[email protected]> wrote:
> Even if our code compiles it does not work anymore ...
>
> [out @ 0xe1821180] Option 'pix_fmts' is not a runtime option and so
> cannot be set after the object has been initialized
>
> int ret = 0; char args[BCTEXTLEN];
> AVPixelFormat pix_fmt = (AVPixelFormat)avpar->format;
> snprintf(args, sizeof(args),
>
> "video_size=%dx%d:pix_fmt=%i:time_base=%d/%d:pixel_aspect=%d/%d",
> avpar->width, avpar->height,(int)pix_fmt,
> st->time_base.num, st->time_base.den, sa_num, sa_den);
> if( ret >= 0 ) {
> filt_ctx = 0;
> ret = insert_filter("buffer", args, "in");
> buffersrc_ctx = filt_ctx;
> }
> if( ret >= 0 )
> ret = flip(theta);
> AVFilterContext *fsrc = filt_ctx;
> if( ret >= 0 ) {
> filt_ctx = 0;
> ret = insert_filter("buffersink", 0, "out");
> buffersink_ctx = filt_ctx;
> }
> if( ret >= 0 ) {
> ret = av_opt_set_bin(buffersink_ctx, "pix_fmts",
> (uint8_t*)&pix_fmt, sizeof(pix_fmt),
> AV_OPT_SEARCH_CHILDREN);
> }
> if( ret >= 0 )
> ret = config_filters(filter_spec, fsrc);
> else
> ff_err(ret, "FFVideoStream::create_filter");
> return ret >= 0 ? 0 : -1;
>
>
> =========
>
> There is no video filtering example in doc/examples.
>
> How I supposed to know what should be put there now?
>
doc/examples/decode_filter_video.c
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