翻译I get RTP stream from WebRTC server (I used mediasoup) using node.js and I get the decrypted RTP packets raw data from the stream. I want to forward this RTP data to ffmpeg and from there I can save it to file, or push it as RTMP stream to other media servers. I guess that the best way would be to create SDP file that describes both the audio and video streams and send the packets therough new sockets.
The ffmpeg command is:
ffmpeg -loglevel debug -protocol_whitelist file,crypto,udp,rtp -re -vcodec libvpx -acodec opus -i test.sdp -vcodec libx264 -acodec aac -y output.mp4I tried to send the packets through UDP:
v=0 o=mediasoup 7199daf55e496b370e36cd1d25b1ef5b9dff6858 0 IN IP4 192.168.193.182 s=7199daf55e496b370e36cd1d25b1ef5b9dff6858 c=IN IP4 192.168.193.182 t=0 0 m=audio 33301 RTP/AVP 111 a=rtpmap:111 /opus/48000 a=fmtp:111 minptime=10;useinbandfec=1 a=rtcp-fb:111 transport-cc a=sendrecv m=video 33302 RTP/AVP 100 a=rtpmap:100 /VP8/90000 a=rtcp-fb:100 ccm fir a=rtcp-fb:100 nack a=rtcp-fb:100 nack pli a=rtcp-fb:100 goog-remb a=rtcp-fb:100 transport-cc a=sendrecvBut I always get (removed the boring parts):
Opening an input file: test.sdp. [sdp @ 0x103dea0] Format sdp probed with size=2048 and score=50 [sdp @ 0x103dea0] audio codec set to: (null) [sdp @ 0x103dea0] audio samplerate set to: 44100 [sdp @ 0x103dea0] audio channels set to: 1 [sdp @ 0x103dea0] video codec set to: (null) [udp @ 0x10402e0] end receive buffer size reported is 131072 [udp @ 0x10400c0] end receive buffer size reported is 131072 [sdp @ 0x103dea0] setting jitter buffer size to 500 [udp @ 0x1040740] bind failed: Address already in use [AVIOContext @ 0x1046980] Statistics: 473 bytes read, 0 seeks test.sdp: Invalid data found when processing inputNote that I get it even if I don't open socket at all or send anything to this port, as if the ffmpeg itself tries to open these ports more than once.
I tried also to open two (video and audio) TCP servers and define SDP with TCP:
v=0 o=mediasoup 7199daf55e496b370e36cd1d25b1ef5b9dff6858 0 IN IP4 192.168.193.182 s=7199daf55e496b370e36cd1d25b1ef5b9dff6858 c=IN IP4 192.168.193.182 t=0 0 m=audio 33301 TCP 111 a=rtpmap:111 /opus/48000 a=fmtp:111 minptime=10;useinbandfec=1 a=rtcp-fb:111 transport-cc a=setup:active a=connection:new a=sendrecv m=video 33302 TCP 100 a=rtpmap:100 /VP8/90000 a=rtcp-fb:100 ccm fir a=rtcp-fb:100 nack a=rtcp-fb:100 nack pli a=rtcp-fb:100 goog-remb a=rtcp-fb:100 transport-cc a=setup:active a=connection:new a=sendrecvHowever I don't see any incoming connection into my TCP servers and I get the following from ffmpeg:
Opening an input file: test.sdp. [sdp @ 0xdddea0] Format sdp probed with size=2048 and score=50 [sdp @ 0xdddea0] audio codec set to: (null) [sdp @ 0xdddea0] audio samplerate set to: 44100 [sdp @ 0xdddea0] audio channels set to: 1 [sdp @ 0xdddea0] video codec set to: (null) [udp @ 0xde02e0] end receive buffer size reported is 131072 [udp @ 0xde00c0] end receive buffer size reported is 131072 [sdp @ 0xdddea0] setting jitter buffer size to 500 [udp @ 0xde0740] end receive buffer size reported is 131072 [udp @ 0xde0180] end receive buffer size reported is 131072 [sdp @ 0xdddea0] setting jitter buffer size to 500 [sdp @ 0xdddea0] Before avformat_find_stream_info() pos: 593 bytes read:593 seeks:0 nb_streams:2 [libvpx @ 0xdeea80] v1.3.0 [libvpx @ 0xdeea80] --target=x86_64-linux-gcc --enable-pic --disable-install-srcs --as=nasm --enable-shared --prefix=/usr --libdir=/usr/lib64 [sdp @ 0xdddea0] Could not find codec parameters for stream 1 (Video: vp8, 1 reference frame, none): unspecified size Consider increasing the value for the 'analyzeduration' and 'probesize' options [sdp @ 0xdddea0] After avformat_find_stream_info() pos: 593 bytes read:593 seeks:0 frames:0 Input #0, sdp, from 'test.sdp': Metadata: title : 7199daf55e496b370e36cd1d25b1ef5b9dff6858 Duration: N/A, bitrate: N/A Stream #0:0, 0, 1/90000: Audio: opus, 48000 Hz, mono, fltp Stream #0:1, 0, 1/90000: Video: vp8, 1 reference frame, none, 90k tbr, 90k tbn, 90k tbc Successfully opened the file. Parsing a group of options: output file output.mp4. Successfully parsed a group of options. Opening an output file: output.mp4. [file @ 0xde3660] Setting default whitelist 'file,crypto' Successfully opened the file. detected 1 logical cores [graph 0 input from stream 0:0 @ 0xde3940] Setting 'time_base' to value '1/48000' [graph 0 input from stream 0:0 @ 0xde3940] Setting 'sample_rate' to value '48000' [graph 0 input from stream 0:0 @ 0xde3940] Setting 'sample_fmt' to value 'fltp' [graph 0 input from stream 0:0 @ 0xde3940] Setting 'channel_layout' to value '0x4' [graph 0 input from stream 0:0 @ 0xde3940] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x4 [audio format for output stream 0:0 @ 0xe37900] Setting 'sample_fmts' to value 'fltp' [audio format for output stream 0:0 @ 0xe37900] Setting 'sample_rates' to value '96000|88200|64000|48000|44100|32000|24000|22050|16000|12000|11025|8000|7350' [AVFilterGraph @ 0xde0220] query_formats: 4 queried, 9 merged, 0 already done, 0 delayed Output #0, mp4, to 'output.mp4': Metadata: title : 7199daf55e496b370e36cd1d25b1ef5b9dff6858 encoder : Lavf57.56.100 Stream #0:0 , 0, 1/48000 : Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, mono, fltp, delay 1024, 69 kb/s Metadata: encoder : Lavc57.64.100 aac Stream mapping: Stream #0:0 -> #0:0 (opus (native) -> aac (native)) Press [q] to stop, [?] for help cur_dts is invalid (this is harmless if it occurs once at the start per stream) test.sdp: Connection timed out cur_dts is invalid (this is harmless if it occurs once at the start per stream) cur_dts is invalid (this is harmless if it occurs once at the start per stream) [output stream 0:0 @ 0xde3b40] EOF on sink link output stream 0:0:default. No more output streams to write to, finishing. [aac @ 0xde2b00] Trying to remove 1024 samples, but the queue is empty [aac @ 0xde2b00] Trying to remove 1024 more samples than there are in the queue [mp4 @ 0xe6a540] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly [mp4 @ 0xe6a540] Encoder did not produce proper pts, making some up. [aac @ 0xde2b00] Trying to remove 1024 samples, but the queue is empty [aac @ 0xde2b00] Trying to remove 1024 more samples than there are in the queue size= 1kB time=00:00:00.04 bitrate= 157.9kbits/s speed=0.00426x video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3268.000000% Input file #0 (test.sdp): Input stream #0:0 (audio): 0 packets read (0 bytes); 0 frames decoded (0 samples); Input stream #0:1 (video): 0 packets read (0 bytes); Total: 0 packets (0 bytes) demuxed Output file #0 (output.mp4): Output stream #0:0 (audio): 0 frames encoded (0 samples); 2 packets muxed (25 bytes); Total: 2 packets (25 bytes) muxed 0 frames successfully decoded, 0 decoding errors [AVIOContext @ 0xde37a0] Statistics: 30 seeks, 25 writeouts [aac @ 0xde2b00] Qavg: 47249.418 [AVIOContext @ 0xde6980] Statistics: 593 bytes read, 0 seeksNote to the "Connection timed out" in the log above.
I guess that both my SDPs are wrong, any suggestions?
Alternatives to SDP are also most welcomed.