GStreamer tee + x264enc first frame duration is not correct

Question

I have live stream source, and I want to start recording the stream from arbitrary time. My setup is like this:

videotestsrc ! tee name=rawVideoSplitter ! queue ! ximagesink

And I start the recording by linking encoder bin to the "tee":

        recorderBranch = gst_parse_bin_from_description("queue name=recorderQueue flush-on-eos=1 leaky=1 ! "
            "timeoverlay shading-value=255 shaded-background=true font-desc="Sans, 10" time-mode=0 ! "
            "videorate ! video/x-raw,framerate=30/1 ! videoconvert ! "
            "x264enc tune=zerolatency ! mp4mux ! filesink name=fileSink location=test.mp4", true, &error);

        if (error) {
            recorderBranch = NULL;
            return;
        }

        gst_bin_add(GST_BIN(pipeline), recorderBranch);
        gst_element_link(rawVideoSplitter, recorderBranch);
        gst_element_set_state(GST_ELEMENT(recorderBranch), GST_STATE_PLAYING);

Everything works fine, except the recorded file length is longer the actual recording time. First frame in the file has length of "encoder start time - pipeline start time". For example if I start to record at 10th second to 20th seconds, in playback I get first frame fixed for 10 seconds and then file starts to playback normally.

How I can fix this?

Answer 1

等待大神答复