when you seek on a rtsp stream (with udp transport), it very often causes a particular type of frame corruption where the image looks smeared vertically, ie the lower part of the image shows vertical strips (more precisely I[x,y] = C[x] for all y>y0, where y0 depends on the i-frame).
for an example, see http://ffmpeg.org/pipermail/libav-user/attachments/20131015/c4991bde/attachment.jpg This issue has been reported in many places and the suggested workaround is using `-rtsp_transport tcp`, however this workaround is not good enough because it causes a significant additional latency. * is there a way (eg cmd line or api options) to avoid such frame corruptions in rtsp streams with UDP mode when doing a seek (seeking to an I-frame) * if not, is there a way to detect when a given frame has such smearing corruptions `discardcorrupt` as was recommended does nothing useful. Ideally, without having to decode packets. To reproduce this smearing: ffplay rtsp://... wait 5 seconds press `p` (pause) wait 2 seconds press `p` (play) image shows the smearing artifact _______________________________________________ Libav-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/libav-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
