RTP Packet lost

[webfrank]

Hi, I have a webcam (old one) with rtsp video but when used with this lib, after few seconds, it starts to log only RTP Packet lost and no more video is processed. After investigation I found the camera resets cseq, with opencv it is only logged and the stream proceeds, with this lib not.

Using ffmpeg I have this:
[rtsp @ 0x7fd977711680] CSeq 5 expected, 0 received.

Is it possible to ignore this error?

[aler9]

Hello, message "RTP packet lost" has nothing to do with CSeq, but rather with the Sequence Number of RTP packets. In order to allow us to replicate the issue you have to generate a network dump of data transferred between the webcam and the gortsplib-based RTSP server or client, by doing this:

1. Download wireshark (https://www.wireshark.org/)
2. Start capturing on the interface used for exchanging packets * If the server and the external hardware or software are both installed on your pc, the interface is probably "loopback", otherwise it's the one of your network card.
3. Start the server and replicate the issue
4. Stop capturing, save the result in .pcap format
5. Attach