Several videoio MPEG encoding tests fails with Gstreamer on Ubuntu 24.04

[asmorkalov]

System Information

OS: Ubuntu 24.04 Failed cases:

2024-05-06T08:12:14.0128972Z [  FAILED  ] videoio/videoio_synthetic.write_read_position/9, where GetParam() = (640x480, FOURCC(MPEG), .avi, GSTREAMER, 28dB)
2024-05-06T08:12:14.0133508Z [  FAILED  ] videoio/videoio_synthetic.write_read_position/12, where GetParam() = (640x480, FOURCC(MPEG), .mkv, GSTREAMER, 28dB)
2024-05-06T08:12:14.0138253Z [  FAILED  ] videoio/videoio_synthetic.write_read_position/25, where GetParam() = (976x768, FOURCC(MPEG), .avi, GSTREAMER, 28dB)
2024-05-06T08:12:14.0142758Z [  FAILED  ] videoio/videoio_synthetic.write_read_position/28, where GetParam() = (976x768, FOURCC(MPEG), .mkv, GSTREAMER, 28dB)
2024-05-06T08:12:14.0147930Z [  FAILED  ] videoio/videowriter_acceleration.write/40, where GetParam() = (FOURCC(MPEG), .mkv, GSTREAMER, 29dB, NONE, false)
2024-05-06T08:12:14.0152402Z [  FAILED  ] videoio/videowriter_acceleration.write/42, where GetParam() = (FOURCC(MPEG), .mkv, GSTREAMER, 29dB, ANY, false)

Detailed description

The test produces video with synthetic frames and decodes it with same backend. GStreamer back-end produced video with some duplicated frames and loose user frames.

Steps to reproduce

1. Install GStreamer
2. Run videoio test ./bin/opencv_test_videoio

Issue submission checklist

• [X] I report the issue, it's not a question
• [X] I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
• [X] I updated to the latest OpenCV version and the issue is still there
• [X] There is reproducer code and related data files (videos, images, onnx, etc)