[FFmpeg-devel] avfilter_graph Question

[Grady Player]

Yes, sorry this was omitted  - after I am done I call:
 
av_frame_free(&oframe);

it seems to be something that is internally referenced by the graph...


On Oct 14, 2015, at 10:50 AM, Paul B Mahol <onemda at gmail.com> wrote:

> Dana 14. 10. 2015. 17:36 osoba "Grady Player" <
> grady.player at verizondigitalmedia.com> napisala je:
>> 
>> Currently using:
>> 
>> commit af5917698bd44f136fd0ff00a9e5f8b5f92f2d58
>> Author: Michael Niedermayer <michaelni at gmx.at>
>> Date:   Sun May 17 01:34:35 2015 +0200
>> 
>> I am trying to set up a small filter graph in order to use the YADIF
> implementation in libavfilter...
>> 
>> I have set up an avfilter_graph with 3 filters…
>> 
>>    avfilter_register_all();
>>    avfGraph = avfilter_graph_alloc();
>> 
>>    AVFilter * bufferFilter, * yadifFilter, * bufferSink;
>> 
>>    bufferFilter = avfilter_get_by_name("buffer");
>>    yadifFilter = avfilter_get_by_name("yadif");
>>    bufferSink = avfilter_get_by_name("buffersink”);
>> 
>>  /* dynamic configuration here */
>> 
>>    avfilter_graph_create_filter(/*done for each filter */);
>> 
>>    if (err >= 0) err = avfilter_link(buffer_ctx, 0, yadif_ctx, 0);
>>    if (err >= 0) err = avfilter_link(yadif_ctx, 0, sink_ctx, 0);
>> 
>>    if (err>=0) err = avfilter_graph_config(avfGraph, NULL);
>> 
>> 
>> Then I feed frames into the graph with:
>> 
>>    err = av_buffersrc_add_frame(buffer_ctx, avf);
>> 
>> and pull frames out of the graph with:
>> 
>>  AVFrame * oframe = av_frame_alloc();
>>  err = av_buffersink_get_frame(sink_ctx, oframe);
>> 
>> 
>> this all seems to work pretty well, except it is holding on to a lot of
> memory that is released in avfilter_graph_free()
>> 
>> I suspect it is something dumb, but is there something I need to be doing
> to release internal references to some resource?
>> 
>> 
>> 
> 
> Do you free frame you no longer need?
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