[Libav-user] how to config multi inputs filter graph

Jesse Liu jesselfree at gmail.com
Mon Aug 21 16:51:39 EEST 2017


I know how to link complex filter desc finally, this is my simple demo base on transcoding.c: https://github.com/tinybug/FFmpeg/blob/tinybug-dev/doc/examples/mytranscoding.c <https://github.com/tinybug/FFmpeg/blob/tinybug-dev/doc/examples/mytranscoding.c> .

Filter graph is great. Many thanks to you guys work on it.

> On 20 Aug 2017, at 3:49 AM, Jesse Liu <jesselfree at gmail.com> wrote:
> 
> Thanks your reply, Paul. It seems the filtering_video.c just show how to init simple filter graph, the problem is that I don’t know how to configure multiple buffersrc and connect them to graph like filter_complex. I’m a newbie in ffmpeg, really hope there is a example about how to config complex filter graph. THANKS!
> 
>> On 20 Aug 2017, at 3:16 AM, Paul B Mahol <onemda at gmail.com> wrote:
>> 
>> On 8/19/17, Jesse Liu <jesselfree at gmail.com> wrote:
>>> Hi ! Is there anyone know how to config multi inputs filter graph by API,
>>> like vf_stack or af_amix, it is too complex for me to find out the way from
>>> ffmpeg.c. Can anyone write a simple configure demo? THANKS!
>> 
>> I guess same as done in doc/examples/filtering_video.c
>> except you configure multiple buffersrc filters and connect them to graph.
>> 
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