[Libav-user] av_parser_init() failing

[Paul B Mahol]

On 8/13/20, rohit khali <khali.rohit at gmail.com> wrote:
> Hi,
>
>
>
> “I am trying to generate a minimal ffmpeg build with support for just some
> of audio/video decoders (like AVC, HEVC, AAC-LATM, AAC, & AC-3). In order
> to do so, I am trimming down the ffmpeg dependencies via the following
> representative configuration options:
>
> *./configure* *\*
>
>         *--disable-debug* *\*
>
>         *--disable-doc* *\*
>
>         *--disable-ffplay* *\*
>
>         *--enable-shared* *\*
>
>         *--enable-avresample* *\*


Do you really need that?

>
>         *--enable-gpl* *\*
>
>         *--enable-libmp3lame* *\*
>
>         *--enable-libvpx* *\*
>
>         *--enable-libwebp* *\*
>
>         *--enable-libxvid* *\*
>
>         *--enable-libx264* *\*
>
>         *--enable-nonfree* *\*
>
>         *--enable-openssl* *\*
>
>         *--enable-libfdk_aac* *\*
>
>         *--enable-postproc* *\*

Do you really need that?

>
>         *--enable-small* *\*
>
>         *--enable-version3* *\*
>
>         *--enable-libzmq* *\*
>
>         *--extra-libs=-ldl* *\*
>
>         *--prefix=**"**${PREFIX}**"* *\*
>
>         *--enable-libopenjpeg* *\*
>
>         *--extra-libs=-lpthread* *\*
>
>
>
> The specific ffmpeg libraries I want to link my application against, are
> *“-lavcodec -lavdevice -lavfilter -lavformat -lavutil -lavresample -lm
> -lpthread -lswscale -lstdc++*
> *”*. However, in this configuration I observe that a call to
> *av_parser_init()* fails to return a parser for any of the codec IDs like
> AVC or AAC.
>
>
> A call to *avcodec_find_decoder()* with an AVC or AAC codec ID however,
> seems to work fine.
>
>
> Is there a dependency on any other library like *“freetype”* etc. that I
> need to enable in my configuration above, in order for *av_parser_init*()
> to succeed?
>
>
> Thanks in advance!
>