Hi On Wed, Jul 09, 2025 at 09:23:48AM +0200, Vittorio Palmisano wrote: > It adds a new audio filter for running audio transcriptions with the whisper > model. > Documentation and examples are included into the patch. > > Signed-off-by: Vittorio Palmisano <vpalmis...@gmail.com> > --- > configure | 5 + > doc/filters.texi | 101 ++++++++ > libavfilter/Makefile | 2 + > libavfilter/af_whisper.c | 494 +++++++++++++++++++++++++++++++++++++++ > libavfilter/allfilters.c | 2 + > 5 files changed, 604 insertions(+) > create mode 100644 libavfilter/af_whisper.c [...]
> +static void run_transcription(AVFilterContext *ctx, AVDictionary **metadata,
> int end_pos)
> +{
> + WhisperContext *wctx = ctx->priv;
> + end_pos = FFMIN(end_pos, wctx->audio_buffer_fill_size);
> +
> + if (!wctx->ctx_wsp || end_pos == 0)
> + {
> + return;
> + }
> +
> + if (!wctx->ctx_wsp)
> + {
> + return;
> + }
> +
> + float duration = (float)end_pos / WHISPER_SAMPLE_RATE;
In fact float should not be used here
end_pos, audio_buffer_fill_size are all integers
and the timestamp is also integer
exact integer / rational math can and should be used here
thx
[...]
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