Jean-Daniel Dupas wrote:
Le 18 nov. 2009 à 14:23, Anatoliy Nenashev a écrit :Hi all! I need to solve the problem with memory usage by libavformat. Let us have the file test.avi which contains video in mpeg-2 format and audio in mp3 format. I want to read only audio stream from that file. Now I can do it with this code: int audio_stream_id; AVFormatContext *pFormatCtx; //open format context and get audio_stream id number //........ AVPacket packet; while( 0 == av_read_packet(pFormatCtx, &packet) ) { if (packet.stream_index == audio_stream_id) { //do something with audio packet .... } av_free_packet(&packet); } //close context I don't need video stream data but av_read_packet allocates memory for packet.data buffer which I need to deallocate by using av_free_packet. This is very bad for performance. Does anybody have any idea how to skip memory allocation for video stream buffer data?Set the video stream discard field to AVDISCARD_ALL. -- Jean-Daniel _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
Thanks! _______________________________________________ libav-user mailing list [email protected] https://lists.mplayerhq.hu/mailman/listinfo/libav-user
