From: Kieran Kunhya
Sent: Wednesday, June 1, 2022 10:26 PM
To: Soft Works
Cc: Kieran Kunhya ; FFmpeg development discussions and patches
Subject: Re: [FFmpeg-devel] [PATCH 0/6] Implement SEI parsing for QSV decoders
Captions aren’t exactly “frame accurate” anyway as each frame has just
>
> Captions aren’t exactly “frame accurate” anyway as each frame has just a
> very small piece
>
> of information and only when a certain sequence is complete, it leads to
> some new letters
>
> or line being ready for display.
>
In many use-cases, you want them to be frame-accurate. Final
From: Kieran Kunhya
Sent: Wednesday, June 1, 2022 9:16 PM
To: FFmpeg development discussions and patches
Cc: softworkz
Subject: Re: [FFmpeg-devel] [PATCH 0/6] Implement SEI parsing for QSV decoders
On Thu, 26 May 2022 at 09:09, ffmpegagent
mailto:ffmpegag...@gmail.com>>
On Thu, 26 May 2022 at 09:09, ffmpegagent wrote:
> But that doesn't help. Those bugs exist and I'm sharing my workarounds,
> which are empirically determined by testing a range of files. If someone is
> interested, I can provide private access to a repository where we have been
> testing this.
Missing SEI information has always been a major drawback when using the QSV
decoders. I used to think that there's no chance to get at the data without
explicit implementation from the MSDK side (or doing something weird like
parsing in parallel). It turned out that there's a hardly known api
