On Wed Jan 15, 2025 at 7:28 PM CET, Nicolas Dufresne wrote: > Package: v4l-utils > Version: 1.28.1-1 > > v4l-utils source now includes a tool called v4l2-tracer. This tools let you > wrap > a V4L2 application and trace its interaction with V4L2 drivers. The trace can > also be replayed, which is common way to reproduce codec issues without the > need > for the original software that triggers the issue. This is a feature request > of > course, this tracer requires json-c library. The tools also has a man page.
The upstream README has this as description for v4l2-tracer: "Tool to trace, record and replay userspace applications that implement the v4l2 memory-to-memory stateless video decoder interface." As we're currently 'playing' with v4l2request stateless video decoder, which IIUC uses m2m, this sounds potentially useful. So a +1 from me on this feature request. Cheers, Diederik
signature.asc
Description: PGP signature
