Re: [FFmpeg-devel] [PATCH] lavc/libx265: flag as experimental

[James Almer <jamrial@gmail.com>]

On 3/15/2023 11:45 AM, Anton Khirnov wrote:
> This encoder leaks and overreads, as can be seen e.g. by running an
> encode under valgrind with default encoder parameters. This was known
> upstream since at least 2019 (e.g. bitbucket issue #482) but never fixed
> until now.
> 
> Since upstream does not seem to practice basic code hygiene, make sure
> people do not use this encoder without knowing what they are getting
> into.

This is a really bad idea. It will break several scripts and command 
lines that were working perfectly fine and giving the desired results.

> ---
>   libavcodec/libx265.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/libavcodec/libx265.c b/libavcodec/libx265.c
> index 420d0953af..d4511251a5 100644
> --- a/libavcodec/libx265.c
> +++ b/libavcodec/libx265.c
> @@ -895,7 +895,8 @@ FFCodec ff_libx265_encoder = {
>       .p.id             = AV_CODEC_ID_HEVC,
>       .p.capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
>                           AV_CODEC_CAP_OTHER_THREADS |
> -                        AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
> +                        AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE |
> +                        AV_CODEC_CAP_EXPERIMENTAL,
>       .p.priv_class     = &class,
>       .p.wrapper_name   = "libx265",
>       .init             = libx265_encode_init,
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