$ ffmpeg -y -re -loglevel debug -rtsp_transport udp_multicast -allowed_media_types audio -i "rtsp://10.1.4.13:554/by-name/AES67-stream%20(on%20hasseb-AoE-F8-82)" -vn -f s16le -ar 48000 -ac 2 -c:a pcm_s16le out.raw ffmpeg version n4.1.3 Copyright (c) 2000-2019 the FFmpeg developers built with gcc 7 (Ubuntu 7.3.0-16ubuntu3) configuration: --prefix=/home/vagrant/ffmpeg_latest/build --pkg-config-flags=--static --extra-cflags=' -I/home/vagrant/ffmpeg_latest/build/include' --extra-ldflags=-L/home/vagrant/ffmpeg_latest/build/lib --bindir=/home/vagrant/ffmpeg_latest/build/bin --enable-gpl --enable- libass --enable-libsrt --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-nvenc --enable-libxvid --enable-nonfree --enable-libx264 --enable-static --enable-decklink --enable-pic --disable-shared --enable-openssl libavutil 56. 22.100 / 56. 22.100 libavcodec 58. 35.100 / 58. 35.100 libavformat 58. 20.100 / 58. 20.100 libavdevice 58. 5.100 / 58. 5.100 libavfilter 7. 40.101 / 7. 40.101 libswscale 5. 3.100 / 5. 3.100 libswresample 3. 3.100 / 3. 3.100 libpostproc 55. 3.100 / 55. 3.100 Splitting the commandline. Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'. Reading option '-re' ... matched as option 're' (read input at native frame rate) with argument '1'. Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'. Reading option '-rtsp_transport' ... matched as AVOption 'rtsp_transport' with argument 'udp_multicast'. Reading option '-allowed_media_types' ... matched as AVOption 'allowed_media_types' with argument 'audio'. Reading option '-i' ... matched as input url with argument 'rtsp://10.1.4.13:554/by-name/AES67-stream%20(on%20hasseb-AoE-F8-82)'. [258/1869] Reading option '-vn' ... matched as option 'vn' (disable video) with argument '1'. Reading option '-f' ... matched as option 'f' (force format) with argument 's16le'. Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '48000'. Reading option '-ac' ... matched as option 'ac' (set number of audio channels) with argument '2'. Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'pcm_s16le'. Reading option 'out.raw' ... matched as output url. Finished splitting the commandline. Parsing a group of options: global . Applying option y (overwrite output files) with argument 1. Applying option loglevel (set logging level) with argument debug. Successfully parsed a group of options. Parsing a group of options: input url rtsp://10.1.4.13:554/by-name/AES67-stream%20(on%20hasseb-AoE-F8-82). Applying option re (read input at native frame rate) with argument 1. Successfully parsed a group of options. Opening an input file: rtsp://10.1.4.13:554/by-name/AES67-stream%20(on%20hasseb-AoE-F8-82). [tcp @ 0x55801d14c500] No default whitelist set [tcp @ 0x55801d14c500] Original list of addresses: [tcp @ 0x55801d14c500] Address 10.1.4.13 port 554 [tcp @ 0x55801d14c500] Interleaved list of addresses: [tcp @ 0x55801d14c500] Address 10.1.4.13 port 554 [tcp @ 0x55801d14c500] Starting connection attempt to 10.1.4.13 port 554 [tcp @ 0x55801d14c500] Successfully connected to 10.1.4.13 port 554 [rtsp @ 0x55801d14a0c0] SDP: v=0 o=- 250948897804 0 IN IP4 10.1.4.13 s=AES67-stream (on hasseb-AoE-F8-82) streamed by "hasseb" t=0 0 a=clock-domain:PTPv2 0 a=recvonly m=audio 5004 RTP/AVP 98 c=IN IP4 239.133.197.77/255 a=rtpmap:98 L24/48000/2 a=sync-time:0 a=framecount:48 a=source-filter: incl IN IP4 239.133.197.77 10.1.4.13 a=ts-refclk:ptp=IEEE1588-2008:00-10-4b-ff-fe-2e-f8-82:domain-nmbr=0 a=mediaclk:direct=0 a=ptime:1 [rtsp @ 0x55801d14a0c0] audio codec set to: pcm_s24be [rtsp @ 0x55801d14a0c0] audio samplerate set to: 48000 [rtsp @ 0x55801d14a0c0] audio channels set to: 2 [rtp @ 0x55801d14c700] No default whitelist set [udp @ 0x55801d14e600] No default whitelist set [udp @ 0x55801d14e600] end receive buffer size reported is 131072 [udp @ 0x55801d15ec00] No default whitelist set [udp @ 0x55801d15ec00] end receive buffer size reported is 131072 [rtsp @ 0x55801d14a0c0] setting jitter buffer size to 500 [rtsp @ 0x55801d14a0c0] hello state=0 Failed to parse interval end specification '' Guessed Channel Layout for Input Stream #0.0 : stereo Input #0, rtsp, from 'rtsp://10.1.4.13:554/by-name/AES67-stream%20(on%20hasseb-AoE-F8-82)': Metadata: title : AES67-stream (on hasseb-AoE-F8-82) streamed by "hasseb" Duration: N/A, bitrate: 2304 kb/s Stream #0:0, 0, 1/48000: Audio: pcm_s24be, 48000 Hz, stereo, s32 (24 bit), 2304 kb/s Successfully opened the file. Parsing a group of options: output url out.raw. Applying option vn (disable video) with argument 1. Applying option f (force format) with argument s16le. Applying option ar (set audio sampling rate (in Hz)) with argument 48000. Applying option ac (set number of audio channels) with argument 2. Applying option c:a (codec name) with argument pcm_s16le. Successfully parsed a group of options. Opening an output file: out.raw. [file @ 0x55801d187300] Setting default whitelist 'file,crypto' Successfully opened the file. Stream mapping: Stream #0:0 -> #0:0 (pcm_s24be (native) -> pcm_s16le (native)) Press [q] to stop, [?] for help cur_dts is invalid (this is harmless if it occurs once at the start per stream) rtsp://10.1.4.13:554/by-name/AES67-stream%20(on%20hasseb-AoE-F8-82): Connection timed out cur_dts is invalid (this is harmless if it occurs once at the start per stream) detected 24 logical cores [graph_0_in_0_0 @ 0x55801d18bd80] Setting 'time_base' to value '1/48000' [graph_0_in_0_0 @ 0x55801d18bd80] Setting 'sample_rate' to value '48000' [graph_0_in_0_0 @ 0x55801d18bd80] Setting 'sample_fmt' to value 's32' [graph_0_in_0_0 @ 0x55801d18bd80] Setting 'channel_layout' to value '0x3' [graph_0_in_0_0 @ 0x55801d18bd80] tb:1/48000 samplefmt:s32 samplerate:48000 chlayout:0x3 [format_out_0_0 @ 0x55801d18c340] Setting 'sample_fmts' to value 's16' [format_out_0_0 @ 0x55801d18c340] Setting 'sample_rates' to value '48000' [format_out_0_0 @ 0x55801d18c340] Setting 'channel_layouts' to value '0x3' [format_out_0_0 @ 0x55801d18c340] auto-inserting filter 'auto_resampler_0' between the filter 'Parsed_anull_0' and the filter 'format_out_0_0' [AVFilterGraph @ 0x55801d188e80] query_formats: 4 queried, 6 merged, 3 already done, 0 delayed [auto_resampler_0 @ 0x55801d18de40] [SWR @ 0x55801d18ec00] Using fltp internally between filters [auto_resampler_0 @ 0x55801d18de40] ch:2 chl:stereo fmt:s32 r:48000Hz -> ch:2 chl:stereo fmt:s16 r:48000Hz Output #0, s16le, to 'out.raw': Metadata: title : AES67-stream (on hasseb-AoE-F8-82) streamed by "hasseb" encoder : Lavf58.20.100 Stream #0:0, 0, 1/48000: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s Metadata: encoder : Lavc58.35.100 pcm_s16le [out_0_0 @ 0x55801d18cd00] EOF on sink link out_0_0:default. No more output streams to write to, finishing.peed= 0x size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Input file #0 (rtsp://10.1.4.13:554/by-name/AES67-stream%20(on%20hasseb-AoE-F8-82)): Input stream #0:0 (audio): 0 packets read (0 bytes); 0 frames decoded (0 samples); Total: 0 packets (0 bytes) demuxed Output file #0 (out.raw): Output stream #0:0 (audio): 0 frames encoded (0 samples); 0 packets muxed (0 bytes); Total: 0 packets (0 bytes) muxed Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used) 0 frames successfully decoded, 0 decoding errors [AVIOContext @ 0x55801d187600] Statistics: 0 seeks, 0 writeouts