[Slackbuilds-users] ffmpeg4 not building

[Luveh Keraph]

With the provisos mentioned in my previous communication, I was able to
build ffmpeg4.

On Mon, Apr 20, 2020 at 11:36 AM Luveh Keraph <1.41421 at gmail.com> wrote:

> It is building all right, in that it did not choke on opencv as I reported
> here before. However, I could not get opencv-legacy to build with tesseract
> already installed. I had to remove tesseract, build and install
> opencv-legacy, build and install tesseract, and then launch the build of
> ffmpeg4.  The build job for ffmpeg4 is still ongoing; I'll report on the
> outcome.
>
> On Mon, Apr 20, 2020 at 8:49 AM Jheengut Pritvi <z.coldplayer at gmail.com>
> wrote:
>
>> Hi,
>> I have not tried the latest version but can you confirm if the legacy
>> opencv is needed instead.
>>
>>
>> On Sun, 19 Apr 2020 at 20:15, Luveh Keraph <1.41421 at gmail.com> wrote:
>>
>>> I am using the following ffmpeg4.sqf file in a freshly installed (and
>>> up-to-date) 14.2 system:
>>>
>>> libass
>>> chromaprint
>>> frei0r
>>> ladspa_sdk
>>> libaom
>>> libbluray
>>> libbs2b
>>> celt
>>> libdc1394
>>> libfdk-aac
>>> flite
>>> libgme
>>> gsm
>>> libiec61883
>>> libavc1394
>>> libilbc
>>> libmodplug
>>> lame
>>> opencore-amr
>>> opencv
>>> opus
>>> rtmpdump
>>> rubberband
>>> snappy
>>> speex
>>> tesseract
>>> twolame
>>> vid.stab
>>> libwebp
>>> x264
>>> x265
>>> xvidcore
>>> zeromq
>>> zvbi
>>> ffmpeg4 | BINS=yes CHROMAPRINT=yes FREI0R=yes LADSPA=yes LIBAOM=yes
>>> LIBBLURAY=yes LIBBS2B=yes LIBCELT=yes LIBDC1394=yes LIBFDK_AAC=yes
>>> LIBFLITE=yes LIBGME=yes LIBGSM=yes LIBIEC61883=yes LIBILBC=yes
>>> LIBMODPLUG=yes LIBMP3LAME=yes LIBOPENCORE=yes LIBOPENCV=yes LIBOPUS=yes
>>> LIBRTMP=yes LIBRUBBERBAND=yes LIBSNAPPY=yes LIBSPEEX=yes LIBTESSERACT=yes
>>> LIBTWOLAME=yes LIBVIDSTAB=yes LIBWEBP=yes LIBX264=yes LIBX265=yes
>>> LIBXVID=yes LIBZMQ=yes LIBZVBI=yes
>>>
>>> I encountered the following issues:
>>>
>>> 1. var-plugin-sdk is required for rubberband.
>>> 2. leptonica is required for tesseract (I think).
>>> 3. ffmpeg4 seems to be looking for opencv, while the script above
>>> installs opencv4:
>>>
>>> ffmpeg-4.1/tests/checkasm/jpeg2000dsp.c
>>> ffmpeg-4.1/tests/checkasm/synth_filter.c
>>> ffmpeg-4.1/tests/checkasm/vf_nlmeans.c
>>> ffmpeg-4.1/tests/tiny_psnr.c
>>> ffmpeg-4.1/COPYING.LGPLv2.1
>>> ffmpeg-4.1/README.md
>>> ffmpeg-4.1/CONTRIBUTING.md
>>> ERROR: opencv not found using pkg-config
>>>
>>> # pkg-config --list-all|grep opencv
>>> opencv4                             OpenCV - Open Source Computer Vision
>>> Library
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