errors when decode H.264 frames using ffmpeg

Question

I am getting the following errors when decoding H.264 frames received from the remote end of a H.264 based SIP video call. Appreciate any help in understanding there errors.

Answer 1

To decode a frame or a slice, sliceHeader is decoded, which refers to a PPS or "Picture Parameter Set". It has information regarding the specifics of the frame like width, height etc.

I guess your data is coming through a streaming input channel, in which case SPS and PPS would have been sent earlier in the stream.

You may have to concatenate the same to your stream.