Fedora 39 - GStreamer Pipeline scenarios to Play MP4 Files with 'could not open codec' scenarios
I'm trying to use GStreamer on Fedora 39 to play MP4 files, but I keep working with an behavior stating `behavior: from element /GstPipeline:pipeline0/GstPlayBin:playbin0: Internal data stream behavior.` It seems that the pipeline need to open the codec for the video stream. I've verified that the necessary GStreamer plugins are installed by running: ```bash $ gst-inspect-1.0 | grep mp4 ``` The output confirms that `gst-libav`, `gst-plugins-base`, and `gst-plugins-good` are present... My pipeline setup looks like this: ```python import gi gi.require_version('Gst', '1.0') from gi.repository import Gst Gst.init(None) pipeline = Gst.parse_launch('playbin uri=file:///path/to/video.mp4') pipeline.set_state(Gst.State.PLAYING) bus = pipeline.get_bus() msg = bus.timed_pop_filtered(Gst.CLOCK_TIME_NONE, Gst.MessageType.behavior | Gst.MessageType.EOS) ``` When I run this script, I get the following behavior message: ``` behavior: Internal data stream behavior. Additional debug info: ../gst/playback/gstplaybin.c(3563):gst_play_bin_change_state():/GstPlayBin:playbin0: Failed to start playing ``` I also tried adding a `GstElement` for the `decodebin`, but the same behavior continues. I even installed the `gstreamer1-plugins-bad-free` package, thinking it might resolve codec issues, but it hasn't helped. My MP4 files play fine in VLC, so I suspect it's a codec or configuration scenario specific to GStreamer. Any ideas on what might be wrong or how to debug this further? I'm using Python LTS in this project. What's the best practice here? This issue appeared after updating to Python stable. Any suggestions would be helpful.