V4l2encoder timestamp expectation

[Arindam Biswas]

Hi All,

For gstreamer v4l2 encoder we send frame numbers instead of actual
timestamp in th output plane

gst_v4l2_buffer_pool_qbuf
 if (frame_number) {
    group->buffer.timestamp.tv_sec = *frame_number;
    group->buffer.timestamp.tv_usec = 0;
  }

But if v4l2 driver (Encoder) need buffer actual timestamps for some reason
how can we send that?

>From the patch below it looks like the frame number is mandated over the
actual timestamp.
v4l2codec: Pass system frame number as timestamp and use it to retrie… ·
GStreamer/gst-plugins-good at bcb3428 · GitHub
<https://github.com/GStreamer/gst-plugins-good/commit/bcb3428ed06e59945dc1c6034f6e68c0e9d3a964>

Thanks
Arindam
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