Re: [Buildroot] [PATCH 6/6] package/ffmpeg: bump version to 9.0.2

[Thomas Petazzoni via buildroot <buildroot@buildroot.org>]

Hello Bernd,

Thanks for working on this. A number of questions below.

On Sun, Nov 01, 2026 at 11:45:34AM +0100, Bernd Kuhls wrote:
> diff --git a/package/ffmpeg/0001-swscale-x86-yuv2rgb-Fix-build-without-SSSE3.patch b/package/ffmpeg/0001-swscale-x86-yuv2rgb-Fix-build-without-SSSE3.patch
> index aa56e5a9b4..3c171c4ce7 100644
> --- a/package/ffmpeg/0001-swscale-x86-yuv2rgb-Fix-build-without-SSSE3.patch
> +++ b/package/ffmpeg/0001-swscale-x86-yuv2rgb-Fix-build-without-SSSE3.patch
> @@ -7,11 +7,11 @@ commit fc6a5883d6af8cae0e96af84dda0ad74b360a084 breaks build on
>  x86_64 CPUs which do not have SSSE3, e.g. AMD Phenom-II
>  
>  Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
> -[bernd.kuhls@t-online.de:
> -  - retrieved from upstream patchwork:
> -    https://patchwork.ffmpeg.org/project/ffmpeg/patch/20200223122256.23402-1-michael@niedermayer.cc/
> -]
> -Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
> +
> +Upstream: https://patchwork.ffmpeg.org/project/ffmpeg/patch/20200223122256.23402-1-michael@niedermayer.cc/

This was submitted in 2020.. but apparently not merged, what's the plan?

> diff --git a/package/ffmpeg/0002-avcodec-vaapi_h264-skip-decode-if-pic-has-no-slices.patch b/package/ffmpeg/0002-avcodec-vaapi_h264-skip-decode-if-pic-has-no-slices.patch
> index 2892df9d81..dfeb37b1e1 100644
> --- a/package/ffmpeg/0002-avcodec-vaapi_h264-skip-decode-if-pic-has-no-slices.patch
> +++ b/package/ffmpeg/0002-avcodec-vaapi_h264-skip-decode-if-pic-has-no-slices.patch
> @@ -10,19 +10,19 @@ Corresponding kodi bug: https://github.com/xbmc/xbmc/issues/15704
>  Downloaded from Kodi ffmpeg repo:
>  https://github.com/xbmc/FFmpeg/commit/2c6b3f357331e203ad87214984661c40704aceb7
>  
> -Patch was sent upstream:
> -http://ffmpeg.org/pipermail/ffmpeg-devel/2019-March/240863.html
> +Upstream: http://ffmpeg.org/pipermail/ffmpeg-devel/2019-March/240863.html

Same question: submitted in 2019, not merged.

> diff --git a/package/ffmpeg/0003-libavutil-Fix-mips-build.patch b/package/ffmpeg/0003-libavutil-Fix-mips-build.patch
> index aeb272c459..ce72514d67 100644
> --- a/package/ffmpeg/0003-libavutil-Fix-mips-build.patch
> +++ b/package/ffmpeg/0003-libavutil-Fix-mips-build.patch
> @@ -7,10 +7,9 @@ Check for sys/auxv.h because not all toolchains contain this header.
>  
>  Fixes https://trac.ffmpeg.org/ticket/9138
>  
> -Patch sent upstream:
> -http://ffmpeg.org/pipermail/ffmpeg-devel/2021-June/281272.html
> +Upstream: http://ffmpeg.org/pipermail/ffmpeg-devel/2021-June/281272.html

Same question :)

> diff --git a/package/ffmpeg/0004-configure-add-extralibs-to-extralibs_xxx.patch b/package/ffmpeg/0004-configure-add-extralibs-to-extralibs_xxx.patch
> index 050b34fd89..b6b49b2ca6 100644
> --- a/package/ffmpeg/0004-configure-add-extralibs-to-extralibs_xxx.patch
> +++ b/package/ffmpeg/0004-configure-add-extralibs-to-extralibs_xxx.patch
> @@ -8,9 +8,9 @@ applications such as motion to retrieve ffmpeg dependencies such as
>  -latomic through pkg-config
>  
>  Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
> -[Upstream status: not upstreamable]
> +Upstream: not upstreamable

So why do we have it?

> diff --git a/package/ffmpeg/0005-avutil-arm-fix-armv5-build.patch b/package/ffmpeg/0005-avutil-arm-fix-armv5-build.patch
> new file mode 100644
> index 0000000000..5f0a6bc325
> --- /dev/null
> +++ b/package/ffmpeg/0005-avutil-arm-fix-armv5-build.patch
> @@ -0,0 +1,47 @@
> +From d79bcb8ff738af8d15021cbe746c23cc245e03d6 Mon Sep 17 00:00:00 2001
> +From: Bernd Kuhls <bernd@kuhls.net>
> +Date: Fri, 30 Oct 2026 08:52:16 +0100
> +Subject: [PATCH] avutil/arm: fix armv5 build
> +MIME-Version: 1.0
> +Content-Type: text/plain; charset=UTF-8
> +Content-Transfer-Encoding: 8bit
> +
> +https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/471db1d323aaed50ff922f0da76ecc8e45c4e817
> +
> +added armv6 optimizations and guarded the include with

If these are ARMv6 optimizations... why are you enabling them on ARMv5?

> +FFMPEG_EXTRA_DOWNLOADS = \
> +	https://github.com/xbmc/xbmc/raw/refs/tags/22.0rc1-Piers/tools/depends/target/ffmpeg/001-ffmpeg-all-libpostproc-plugin.patch
> +

This is a huge patch to re-add libpostproc. What's the plan
mid/long-term ?

Best regards,

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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