Hi,
I haven't touched clapper since gtk broke the gl backend and thus made it unusable on my computers. I now got a rk3588 which apparently knows enough opengl again so I can start clapper but when I try running it with big buck bunny I get this:
<img width="1920" height="1200" alt="Image" src="https://github.com/user-attachments/assets/30125648-276e-4508-b084-4d5b883f5225" />
I tried using gst-play and got this:
```
Press 'k' to see a list of keyboard shortcuts.
Now playing /home/m/Downloads/bbb_sunflower_2160p_60fps_normal.mp4
Redistribute latency...
Redistribute latency...
Redistribute latency...
ERROR Failed to configure H264 decoder for file:///home/m/Downloads/bbb_sunflower_2160p_60fps_normal.mp4
ERROR debug information: ../sys/v4l2codecs/gstv4l2codech264dec.c(366): gst_v4l2_codec_h264_dec_negotiate (): /GstPlayBin3:playbin/GstURIDecodeBin3:uridecodebin3/GstDecodebin3:decodebin3-0/v4l2slh264dec:v4l2slh264dec0:
gst_v4l2_decoder_set_sink_fmt() failed: Invalid argument
Reached end of play list.
```
What else can I run to get to the bottom of this issue?
The platform is:
MNT Pocket Reform with Firefly icore RK3588
Debian unstable with Linux 7.0.12 (all packages upgraded to their latest version)
clapper version 0.10.0
Thank you!
My apologies. When I wanted to take as screenshot of the situation I indeed had a typo in the filename. I now updated the screenshot in my original issue with the correct one.
I was probably too much in a rush (apologies for that) and didn't automatically connect a "Resource not found" to a "File not found".
> I was probably too much in a rush (apologies for that) and didn't automatically connect a "Resource not found" to a "File not found".
Yeah, GStreamer settled on a generic "Resource not found" cause what you can play is not always a file and they wanted to have single text for all cases. I get why it can be not crystal clear when dealing with files only/mostly (I just print the errors from GStreamer as they are).
Anyway, with yours error now being the same with and (as you tried) without Clapper in the equation. I think its safe to say that its not something that can be be fixed in Clapper itself. You should probably take it upstream and report it on [GStreamer GitLab](https://gitlab.freedesktop.org/gstreamer/gstreamer/).