/**
* An optional key describing whether encoders prepend headers to sync frames (e.g.
* SPS and PPS to IDR frames for H.264). This is an optional parameter that applies only
- * to video encoders. A video encoder may not support this feature; check the output
- * format to verify that this feature was enabled.
+ * to video encoders. A video encoder may not support this feature; the component will fail
+ * to configure in that case. For other components, this key is ignored.
*
* The value is an integer, with 1 indicating to prepend headers to every sync frames,
* or 0 otherwise. The default value is 0.