Carl,
Thanks for the suggestions so far. I suspect there is something in that command
that is causing the high CPU usage. Maybe there is a better way to structure
the command. I spun up a new server running Ubuntu 18.04.1 LTS and installed
FFMPEG version 7.3.4.4 which is the current supported version for Bionic Beaver.
I tried what you said and output to NULL with the same results in regards to
the CPU usage so I don’t think it’s the re-pack to UDP multicast.
======== OUTPUT ==================
transcoder:~$ ffmpeg -i
'udp://@239.129.2.110:59110?fifo_size=1000000&overrun_nonfatal=1' -c:v libx264
-x264opts keyint=120:no-scenecut -b:v 6000k -profile:v high -c:a aac -f null
/dev/null
ffmpeg version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2000-2018 the FFmpeg
developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1
--toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
--enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
--enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype
--enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame
--enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus
--enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine
--enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2
--enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal
--enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm
--enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv
--enable-libx264 --enable-shared
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100
[mpeg2video @ 0x55d5c951cec0] Invalid frame dimensions 0x0.
Last message repeated 13 times
Input #0, mpegts, from
'udp://@239.129.2.110:59110?fifo_size=1000000&overrun_nonfatal=1':
Duration: N/A, start: 89749.701144, bitrate: N/A
Program 3
Stream #0:0[0x31]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p(tv, bt709, bottom first), 1280x720 [SAR 1:1 DAR 16:9], Closed Captions,
59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
Stream #0:1[0x34](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
5.1(side), fltp, 384 kb/s
Stream #0:2[0x35](spa): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo,
fltp, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mpeg2video (native) -> h264 (libx264))
Stream #0:1 -> #0:1 (ac3 (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x55d5c9a46980] using SAR=1/1
[libx264 @ 0x55d5c9a46980] using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3
SSE4.2 AVX XOP FMA4
[libx264 @ 0x55d5c9a46980] profile High, level 3.2
Output #0, null, to '/dev/null':
Metadata:
encoder : Lavf57.83.100
Stream #0:0: Video: h264 (libx264), yuv420p, 1280x720 [SAR 1:1 DAR 16:9],
q=-1--1, 6000 kb/s, 59.94 fps, 59.94 tbn, 59.94 tbc
Metadata:
encoder : Lavc57.107.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/6000000 buffer size: 0 vbv_delay: -1
Stream #0:1(eng): Audio: aac (LC), 48000 Hz, 5.1(side), fltp, 341 kb/s
Metadata:
encoder : Lavc57.107.100 aac
frame= 2917 fps= 49 q=31.0 size=N/A time=00:00:48.91 bitrate=N/A speed=0.828x
Thoughts?
-Jimbo
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