Green/gray video frames for several seconds after seeking in MPEG-TS files

Environment:

• Debian Trixie XFCE
• Parole 4.18.2
• Intel Haswell integrated graphics

Description:

When seeking forward or backward in MPEG-TS (.ts) files, the video area turns green (sometimes gray) for several seconds before normal playback resumes.

The issue is reproducible with multiple TS files.

Steps to reproduce:

1. Open a .ts file in Parole.
2. Seek forward or backward using the seek bar.
3. Observe the video output.

Expected result:

Video resumes normally immediately after seeking.

Actual result:

The video area becomes green or gray for a few seconds, then playback recovers automatically.

Additional observations:

• The issue is reproducible with several TS files.
• MPV on the same system does not exhibit this behavior with the same files.
• GStreamer appears to use VA-API decoding (vah264dec0 on Intel Haswell).

I do not know whether the issue is in Parole, GStreamer, the video sink, or the hardware-accelerated decode path.