Hi ffmpeg Recently I want to use dash format to serve a real-time stream video in C language. I want to encode the video in memory and copy it out for some purpose.
I use an example code here: https://gist.github.com/AlexVestin/15b90d72f51ff7521cd7ce4b70056dff The example code is fine for mp4 format( e.g. call open_video(width, height, 60, 400000000, 0, 1, 1);), but the custom avio callback can not be triggered when I just modify the "mp4" to "dash" in line 220. I have read the code in dashenc.c, it seems that dashenc take over the avio functions in dash_init(): if (!c->single_file) { if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0) return ret; ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts); } else { ctx->url = av_strdup(filename); ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts); } User can only use existing IO functions defined in protocols.c. Yes, of course, I can read the packet after calling avcodec_receive_packet(), but the init segment or the file header can't be retrieved from memory, becasue avformat_write_header() can not trigger the custom avio callback function. The behavior is inconsistent for each format, any ideas? Thanks. -- eSX _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
