Sorry for the late answer.
There are no actual files, but this is used in the NDI streams.
There is a new library for that here:
https://code.videolan.org/jbk/libndi/ and this is how I found out about that.
On Thu, May 14, 2020, at 21:28, Paul B Mahol wrote:
> Do you have actual file this fixes?
>
> On 5/10/20, Jean-Baptiste Kempf <j...@videolan.org> wrote:
> > This is similar to field 1 (effd2e72)
> > ---
> > libavcodec/speedhq.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/libavcodec/speedhq.c b/libavcodec/speedhq.c
> > index 890b8253cd..b834b79f28 100644
> > --- a/libavcodec/speedhq.c
> > +++ b/libavcodec/speedhq.c
> > @@ -447,7 +447,7 @@ static int speedhq_decode_frame(AVCodecContext *avctx,
> > }
> > frame->key_frame = 1;
> >
> > - if (second_field_offset == 4) {
> > + if (second_field_offset == 4 || second_field_offset == (buf_size-4)) {
> > /*
> > * Overlapping first and second fields is used to signal
> > * encoding only a single field. In this case, "height"
> > --
> > 2.26.2
> >
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