[FFmpeg-devel] RTP mark bit not passed to parse_packet
Alexandre FERRIEUX - FT/RD/SIRP/ASF/SOFTL
Thu Jan 15 10:13:10 CET 2009
In the process of writing an RTP depayloader for H263 (RFC2429, simple
follow-on packet mode), I see that the current API doesn't pass the RTP
Mark bit (buf&0x80) to the payload handler callback.
payload_type = buf & 0x7f;
len -= 12;
buf += 12;
rv = s->parse_packet(s->dynamic_protocol_context,
s->st, pkt, ×tamp, buf, len, flags);
This makes it uneasy to detect the last packet of a frame in
RFC2429-packetized H263 (since the M bit means "end of picture in
current packet"). Of course the workaround is to wait for next RTP
packet which is not a follow-on, but this complicates the code and
introduces a 1-packet delay.
Am I missing something ?
Thanks in advance,
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