[FFmpeg-devel] [PATCH] doc/filters: add example for idet filter

[FFmpeg-devel] [PATCH] doc/filters: add example for idet filter

[Marth64]

Signed-off-by: Marth64 <marth64@proxyid.net>
---
 doc/filters.texi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 6d00ba2c3f..1250685bc7 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -15919,6 +15919,13 @@ further computations. This allows inserting the idet filter as a low computation
 method to clean up the interlaced flag
 @end table
 
+@subsection Examples
+
+Analyze the field order of the first 360 frames in a video (use @code{NUL} as output for Windows):
+@example
+ffmpeg -i INPUT -filter:v idet -frames:v 360 -an -f rawvideo -y /dev/null
+@end example
+
 @section il
 
 Deinterleave or interleave fields.
-- 
2.34.1

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Re: [FFmpeg-devel] [PATCH] doc/filters: add example for idet filter

[Michael Niedermayer]

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On Mon, Dec 11, 2023 at 01:53:36PM -0600, Marth64 wrote:
> Signed-off-by: Marth64 <marth64@proxyid.net>
> ---
>  doc/filters.texi | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/doc/filters.texi b/doc/filters.texi
> index 6d00ba2c3f..1250685bc7 100644
> --- a/doc/filters.texi
> +++ b/doc/filters.texi
> @@ -15919,6 +15919,13 @@ further computations. This allows inserting the idet filter as a low computation
>  method to clean up the interlaced flag
>  @end table
>  
> +@subsection Examples
> +
> +Analyze the field order of the first 360 frames in a video (use @code{NUL} as output for Windows):
> +@example
> +ffmpeg -i INPUT -filter:v idet -frames:v 360 -an -f rawvideo -y /dev/null

why -f rawvideo and not -f null ?

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Does the universe only have a finite lifespan? No, its going to go on
forever, its just that you wont like living in it. -- Hiranya Peiri

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Re: [FFmpeg-devel] [PATCH] doc/filters: add example for idet filter

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 1180 bytes --]

On Tue, Dec 12, 2023 at 01:18:01AM +0100, Michael Niedermayer wrote:
> On Mon, Dec 11, 2023 at 01:53:36PM -0600, Marth64 wrote:
> > Signed-off-by: Marth64 <marth64@proxyid.net>
> > ---
> >  doc/filters.texi | 7 +++++++
> >  1 file changed, 7 insertions(+)
> > 
> > diff --git a/doc/filters.texi b/doc/filters.texi
> > index 6d00ba2c3f..1250685bc7 100644
> > --- a/doc/filters.texi
> > +++ b/doc/filters.texi
> > @@ -15919,6 +15919,13 @@ further computations. This allows inserting the idet filter as a low computation
> >  method to clean up the interlaced flag
> >  @end table
> >  
> > +@subsection Examples
> > +
> > +Analyze the field order of the first 360 frames in a video (use @code{NUL} as output for Windows):
> > +@example
> > +ffmpeg -i INPUT -filter:v idet -frames:v 360 -an -f rawvideo -y /dev/null
> 
> why -f rawvideo and not -f null ?

i see you changed this already in a subsequent patch, please ignore me

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The smallest minority on earth is the individual. Those who deny 
individual rights cannot claim to be defenders of minorities. - Ayn Rand

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[FFmpeg-devel] [PATCH v4] doc/filters: add idet example

[Marth64]

Thanks all, this should be much better now.

Signed-off-by: Marth64 <marth64@proxyid.net>
---
 doc/filters.texi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 09fa3264ea..20c91bab3a 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -15968,6 +15968,15 @@ further computations. This allows inserting the idet filter as a low computation
 method to clean up the interlaced flag
 @end table
 
+@subsection Examples
+
+Inspect the field order of the first 360 frames in a video, in verbose detail:
+@example
+ffmpeg -i INPUT -filter:v idet,metadata=mode=print -frames:v 360 -an -f null -
+@end example
+The idet filter will add analysis metadata to each frame, which will then be
+discarded. At the end, the filter will also print a final report with statistics.
+
 @section il
 
 Deinterleave or interleave fields.
-- 
2.34.1

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Re: [FFmpeg-devel] [PATCH v4] doc/filters: add idet example

[Marth64]

The in-reply-to didn't seem to work out, but this traces back to
https://ffmpeg.org//pipermail/ffmpeg-devel/2023-December/318226.html

On Sat, Jan 6, 2024 at 4:18 PM Marth64 <marth64@proxyid.net> wrote:

> Thanks all, this should be much better now.
>
> Signed-off-by: Marth64 <marth64@proxyid.net>
> ---
>  doc/filters.texi | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/doc/filters.texi b/doc/filters.texi
> index 09fa3264ea..20c91bab3a 100644
> --- a/doc/filters.texi
> +++ b/doc/filters.texi
> @@ -15968,6 +15968,15 @@ further computations. This allows inserting the
> idet filter as a low computation
>  method to clean up the interlaced flag
>  @end table
>
> +@subsection Examples
> +
> +Inspect the field order of the first 360 frames in a video, in verbose
> detail:
> +@example
> +ffmpeg -i INPUT -filter:v idet,metadata=mode=print -frames:v 360 -an -f
> null -
> +@end example
> +The idet filter will add analysis metadata to each frame, which will then
> be
> +discarded. At the end, the filter will also print a final report with
> statistics.
> +
>  @section il
>
>  Deinterleave or interleave fields.
> --
> 2.34.1
>
>
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Re: [FFmpeg-devel] [PATCH v4] doc/filters: add idet example

[Stefano Sabatini]

On date Saturday 2024-01-06 16:18:39 -0600, Marth64 wrote:
> Thanks all, this should be much better now.
> 
> Signed-off-by: Marth64 <marth64@proxyid.net>
> ---
>  doc/filters.texi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/doc/filters.texi b/doc/filters.texi
> index 09fa3264ea..20c91bab3a 100644
> --- a/doc/filters.texi
> +++ b/doc/filters.texi
> @@ -15968,6 +15968,15 @@ further computations. This allows inserting the idet filter as a low computation
>  method to clean up the interlaced flag
>  @end table
>  
> +@subsection Examples
> +
> +Inspect the field order of the first 360 frames in a video, in verbose detail:
> +@example
> +ffmpeg -i INPUT -filter:v idet,metadata=mode=print -frames:v 360 -an -f null -
> +@end example
> +The idet filter will add analysis metadata to each frame, which will then be
> +discarded. At the end, the filter will also print a final report with statistics.
> +

Thanks, will apply.
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