[FFmpeg-user] A query on A53 Closed captions (CC) implementation status in the hevc_nvenc encoder

[Dennis Mungai]

On Tue, 22 Oct 2019 at 10:28, Moritz Barsnick <barsnick at gmx.net> wrote:
>
> Hi Dennis,
>
> On Tue, Oct 22, 2019 at 04:09:16 +0300, Dennis Mungai wrote:
> > Has A53 Closed Captions support been implemented in the hevc_nvenc
> > encoder, at the present?
>
> As far as I understand, yes.
>
> https://github.com/FFmpeg/FFmpeg/commit/5a88e8c36581fed09c7db6dc7229f1fd9ab5559d
>
> > I see a -a53cc option emitted by ffmpeg -h encoder=h264_nvenc but
> > omitted in hevc_nvenc.
>
> An option to *disable* insertion of a53 was introduced later, but
> apparently forgotten for nvenc_hevc:
>
> https://github.com/FFmpeg/FFmpeg/commit/dc2d56a66b8ad8bc5b07a5cc9c0608a67d5c2ae2
>
> Cheers,
> Moritz

Thanks!

So that would mean that A53CC is indeed enabled on both h264 &
hevc_nvenc encoders, but can't be toggled off in the latter.
Understood.