December 2017 - ffmpeg-user - lists.ffmpeg.org

FFmpeg mosaic
by alexdjca 15 Jan '18

15 Jan '18

Hi All, following this help Create Mosaic with FFMPEG <https://trac.ffmpeg.org/wiki/Create%20a%20mosaic%20out%20of%20several%20inp…> i've created a nice mosaic i run to keep a constant eye on a lot of different live streams I've published in my network, and the presence of audio in each of them. The final code i've built is the following: ffmpeg -probesize 1M \ -i udp://239.98.181.1:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.2:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.3:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.4:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.6:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.7:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.3:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.2:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.4:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.1:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.7:6000?fifo_size=100000?overrun_nonfatal=1 \ -i udp://239.98.181.2:6000?fifo_size=100000?overrun_nonfatal=1 \ -filter_complex "color=c=black:size=1280x720 [base];\ [0:v] setpts=PTS-STARTPTS, scale=224x192, drawtext=text='TESTO1'[r1p1];\ [0:a] showvolume=b=1:h=10:w=200:o=v [r1p1a];\ [1:v] setpts=PTS-STARTPTS, scale=224x192 [r1p2];\ [1:a] showvolume=b=1:h=10:w=200:o=v [r1p2a];\ [2:v] setpts=PTS-STARTPTS, scale=224x192 [r1p3];\ [2:a] showvolume=b=1:h=10:w=200:o=v [r1p3a];\ [3:v] setpts=PTS-STARTPTS, scale=224x192 [r1p4];\ [3:a] showvolume=b=1:h=10:w=200:o=v [r1p4a];\ [4:v] setpts=PTS-STARTPTS, scale=224x192 [r2p1];\ [4:a] showvolume=b=1:h=10:w=200:o=v [r2p1a];\ [5:v] setpts=PTS-STARTPTS, scale=224x192 [r2p2];\ [5:a] showvolume=b=1:h=10:w=200:o=v [r2p2a];\ [6:v] setpts=PTS-STARTPTS, scale=224x192 [r2p3];\ [6:a] showvolume=b=1:h=10:w=200:o=v [r2p3a];\ [7:v] setpts=PTS-STARTPTS, scale=224x192 [r2p4];\ [7:a] showvolume=b=1:h=10:w=200:o=v [r2p4a];\ [8:v] setpts=PTS-STARTPTS, scale=224x192 [r3p1];\ [8:a] showvolume=b=1:h=10:w=200:o=v [r3p1a];\ [9:v] setpts=PTS-STARTPTS, scale=224x192 [r3p2];\ [9:a] showvolume=b=1:h=10:w=200:o=v [r3p2a];\ [10:v] setpts=PTS-STARTPTS, scale=224x192 [r3p3];\ [10:a] showvolume=b=1:h=10:w=200:o=v [r3p3a];\ [11:v] setpts=PTS-STARTPTS, scale=224x192 [r3p4];\ [11:a] showvolume=b=1:h=10:w=200:o=v [r3p4a];\ [base][r1p1] overlay=shortest=0:x=50:y=10 [stop1]; [stop1][r1p1a] overlay=shortest=0:x=0:y=0 [tmp1];\ [tmp1][r1p2] overlay=shortest=0:x=370:y=10 [stop2]; [stop2][r1p2a] overlay=shortest=0:x=320:y=0 [tmp2];\ [tmp2][r1p3] overlay=shortest=0:x=690:y=10 [stop3]; [stop3][r1p3a] overlay=shortest=0:x=640:y=0 [tmp3];\ [tmp3][r1p4] overlay=shortest=0:x=1010:y=10 [stop4]; [stop4][r1p4a] overlay=shortest=0:x=960:y=0 [tmp4];\ [tmp4][r2p1] overlay=shortest=0:x=50:y=250 [stop5]; [stop5][r2p1a] overlay=shortest=0:x=0:y=240 [tmp5]; \ [tmp5][r2p2] overlay=shortest=0:x=370:y=250 [stop6]; [stop6][r2p2a] overlay=shortest=0:x=320:y=240 [tmp6]; \ [tmp6][r2p3] overlay=shortest=0:x=690:y=250 [stop7]; [stop7][r2p3a] overlay=shortest=0:x=640:y=240 [tmp7]; \ [tmp7][r2p4] overlay=shortest=0:x=1010:y=250 [stop8]; [stop8][r2p4a] overlay=shortest=0:x=960:y=240 [tmp8]; \ [tmp8][r3p1] overlay=shortest=0:x=50:y=490 [stop9]; [stop9][r3p1a] overlay=shortest=0:x=0:y=480 [tmp9]; \ [tmp9][r3p2] overlay=shortest=0:x=370:y=490 [stop10]; [stop10][r3p2a] overlay=shortest=0:x=320:y=480 [tmp10]; \ [tmp10][r3p3] overlay=shortest=0:x=690:y=490 [stop11]; [stop11][r3p3a] overlay=shortest=0:x=640:y=480 [tmp11]; \ [tmp11][r3p4] overlay=shortest=0:x=1010:y=490 [stop12]; [stop12][r3p4a] overlay=shortest=0:x=960:y=480" \ -c:v mpeg2video -b:v 4M -minrate 4M -maxrate 4M -map 0 -map 1 -map 2 -map 3 -map 4 -map 5 -map 6 -map 7 -map 8 -map 9 -map 10 -map 11 -f mpegts udp://239.98.181.20:6000 The result is quite good but there is a major issue i cannot figure out how to fix. Basically until all the streams are running fine the mosaic is perfect, but as soon as one of the input is missing all the mosaic stops and there is no way to let it start again. Another issue (minor actually) is that ffmpeg, before to compose the mosaic, needs to analyze all the streams so it takes a lot to start. Can anybody help me to find a solution please? Thanks in advance. Alex -- View this message in context: http://ffmpeg-users.933282.n4.nabble.com/FFmpeg-mosaic-tp4679120.html Sent from the FFmpeg-users mailing list archive at Nabble.com.

2 1

x264 0.155.2893 (very recent changes)
by Reindl Harald 11 Jan '18

11 Jan '18

FYI: ffmpeg 3.4.1 src/libavcodec/libx264.c: In function 'X264_init_static': src/libavcodec/libx264.c:892:9: error: 'x264_bit_depth' undeclared (first use in this function); did you mean 'x264_picture_t'? if (x264_bit_depth == 8) ^~~~~~~~~~~~~~ x264_picture_t make: *** [/home/builduser/rpmbuild/BUILD/ffmpeg-20171212/ffbuild/common.mak:60: libavcodec/libx264.o] Error 1 make: *** Waiting for unfinis _____________________________ fresh snapshot from git [builduser@buildserver:/rpmbuild/SPECS]$ rpmbuild -bb ffmpeg-latest.spec Ausführung(%prep): /bin/sh -e /var/tmp/rpm-tmp.IXDZ1x + umask 022 + cd /home/builduser/rpmbuild/BUILD + cd /home/builduser/rpmbuild/BUILD + rm -rf ffmpeg-20171225 + /usr/bin/xz -dc /home/builduser/rpmbuild/SOURCES/ffmpeg-20171225.tar.xz + /usr/bin/tar -xof - + STATUS=0 + '[' 0 -ne 0 ']' + cd ffmpeg-20171225 + /usr/bin/chmod -Rf a+rX,u+w,g-w,o-w . + exit 0 Ausführung(%build): /bin/sh -e /var/tmp/rpm-tmp.3J4UGz + umask 022 + cd /home/builduser/rpmbuild/BUILD + cd ffmpeg-20171225 + mkdir generic + pushd generic ~/rpmbuild/BUILD/ffmpeg-20171225/generic ~/rpmbuild/BUILD/ffmpeg-20171225 + ../configure --prefix=/usr/local --bindir=/usr/local/bin --mandir=/usr/local/man '--extra-cflags=-I/usr/local/x264 -m64 -O2 -g0 -mfpmath=sse -mavx -msse2avx -march=sandybridge -mtune=sandybridge -fopenmp -pipe -fno-strict-aliasing -fomit-frame-pointer -fexceptions -fstack-protector-strong --param=ssp-buffer-size=6 -D_FORTIFY_SOURCE=2 -Wstack-protector -Wformat -Werror=format-security -Ofast -ffast-math -funsafe-math-optimizations -Wno-pointer-sign -minline-all-stringops -fno-strict-aliasing -fuse-ld=gold -fuse-linker-plugin -Wa,--noexecstack' '--extra-ldflags=-I/usr/local/x264 -L/usr/local/x264 -ldl -Wl,--as-needed -Wl,-z,now -Wl,-z,relro -Wl,-z,noexecstack -m64 -O2 -g0 -mfpmath=sse -mavx -msse2avx -march=sandybridge -mtune=sandybridge -fopenmp -pipe -fno-strict-aliasing -fomit-frame-pointer -fexceptions -fstack-protector-strong --param=ssp-buffer-size=6 -D_FORTIFY_SOURCE=2 -Wstack-protector -Wformat -Werror=format-security -Ofast -ffast-math -funsafe-math-optimizations -Wno-pointer-sign -minline-all-stringops -fno-strict-aliasing -pie -fPIE -fuse-ld=gold -fuse-linker-plugin -Wa,--noexecstack' --ar=gcc-ar --ranlib=true --enable-nonfree --enable-gpl --enable-pic --enable-version3 --enable-libmp3lame --enable-libtheora --enable-libx264 --enable-libx265 --enable-libvpx --enable-openssl --enable-static --enable-runtime-cpudetect --disable-amd3dnow --disable-amd3dnowext --disable-avdevice --disable-debug --disable-devices --disable-ffplay --disable-ffprobe --disable-ffserver --disable-htmlpages --disable-hwaccels --disable-iconv --disable-libdc1394 --disable-libfreetype --disable-libgsm --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libopencv --disable-libopenjpeg --disable-libopus --disable-librtmp --disable-libspeex --disable-libvorbis --disable-libxvid --disable-podpages --disable-postproc --disable-protocol=gopher --disable-shared --disable-txtpages ERROR: libx264 not found If you think configure made a mistake, make sure you are using the latest version from Git. If the latest version fails, report the problem to the ffmpeg-user(a)ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net. Include the log file "ffbuild/config.log" produced by configure as this will help solve the problem. Fehler: Fehler-Status beim Beenden von /var/tmp/rpm-tmp.3J4UGz (%build) [builduser@buildserver:/rpmbuild/BUILD/ffmpeg-20171225/ffbuild]$ ls insgesamt 28K -rw-r--r-- 1 builduser builduser 829 2017-12-25 22:17 arch.mak -rw-r--r-- 1 builduser builduser 5,0K 2017-12-25 22:17 common.mak -rw-r--r-- 1 builduser builduser 3,7K 2017-12-25 22:17 library.mak -rwxr-xr-x 1 builduser builduser 478 2017-12-25 22:17 libversion.sh -rwxr-xr-x 1 builduser builduser 1,5K 2017-12-25 22:17 pkgconfig_generate.sh -rwxr-xr-x 1 builduser builduser 1,9K 2017-12-25 22:17 version.sh ____________________________ [builduser@testserver:/rpmbuild/SOURCES]$ ./ffmpeg-snapshot-latest.sh /tmp/tmp.rvMGzIfP04 Klone nach 'ffmpeg' ... remote: Counting objects: 536649, done. remote: Compressing objects: 100% (113806/113806), done. remote: Total 536649 (delta 430087), reused 526982 (delta 421777) Empfange Objekte: 100% (536649/536649), 93.44 MiB | 302.00 KiB/s, Fertig. Löse Unterschiede auf: 100% (430087/430087), Fertig. /tmp/tmp.rvMGzIfP04/ffmpeg-20171225/libswscale /tmp/tmp.rvMGzIfP04/ffmpeg-20171225 /tmp/tmp.rvMGzIfP04/ffmpeg-20171225 [builduser@testserver:/rpmbuild/SOURCES]$ ls | grep ffmpeg | grep tar -rw-r----- 1 builduser builduser 8,2M 2017-10-16 12:00 ffmpeg-20171016.tar.xz -rw-r----- 1 builduser builduser 8,3M 2017-12-25 22:17 ffmpeg-20171225.tar.xz -rw-r----- 1 builduser builduser 7,9M 2017-10-26 21:25 ffmpeg-3.3.5.tar.xz [builduser@buildserver:/rpmbuild/BUILD/ffmpeg-20171225/ffbuild]$ cat /rpmbuild/SOURCES/ffmpeg-snapshot-latest.sh #!/usr/bin/bash set -e tmp=$(mktemp -d) trap cleanup EXIT cleanup() { set +e [ -z "$tmp" -o ! -d "$tmp" ] || rm -rf "$tmp" } unset CDPATH pwd=$(pwd) date=$(date +%Y%m%d) echo "$tmp" cd "$tmp" git clone git://git.videolan.org/ffmpeg.git mv ffmpeg ffmpeg-$date cd ffmpeg-$date pushd libswscale popd find . -type d -name .git -print0 | xargs -0r rm -rf cd .. tar Jcf "$pwd"/ffmpeg-$date.tar.xz ffmpeg-$date cd - >/dev/null

2 8

FFMPEG sidechaincompress not working as it should?
by Frank ＠ Taapo 08 Jan '18

08 Jan '18

I have been trying to get sidechaining to work with FFMPEG, but my complex filter skills are lacking. I'm running two aif files into ffmpeg, hoping the voice would "duck" the background music when the voice-over is speaking. But I get an error with this command-line (on Windows, with latest FFMPEG binary): ffmpeg.exe -i temp_music.aif -i temp_voice.aif -filter_complex "[1:a]asplit=2[sc][mix];[0:a][sc]sidechaincompress=threshold=0.1:ratio=5[bg]; [bg][mix]amerge[fin‌al]" -map [final] final.mp3 Everything decodes fine: ffmpeg version N-87353-g183fd30 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 7.2.0 (GCC) configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib libavutil 55. 76.100 / 55. 76.100 libavcodec 57.106.101 / 57.106.101 libavformat 57. 82.101 / 57. 82.101 libavdevice 57. 8.101 / 57. 8.101 libavfilter 6.105.100 / 6.105.100 libswscale 4. 7.103 / 4. 7.103 libswresample 2. 8.100 / 2. 8.100 libpostproc 54. 6.100 / 54. 6.100 Guessed Channel Layout for Input Stream #0.0 : stereo Input #0, aiff, from 'temp_music.aif': Duration: 00:01:26.68, start: 0.000000, bitrate: 1536 kb/s Stream #0:0: Audio: pcm_s16be, 48000 Hz, stereo, s16, 1536 kb/s Guessed Channel Layout for Input Stream #1.0 : stereo Input #1, aiff, from 'temp_voice.aif': Duration: 00:01:26.68, start: 0.000000, bitrate: 1536 kb/s Stream #1:0: Audio: pcm_s16be, 48000 Hz, stereo, s16, 1536 kb/s Output with label 'final' does not exist in any defined filter graph, or was already used elsewhere. But then I receive an error: Output with label 'final' does not exist in any defined filter graph, or was already used elsewhere. Anybody knows why? ᐧ

3 4

Adding user-defined SEI messages thru libavcodec/libx264
by SF 06 Jan '18

06 Jan '18

Hi, I am searching a way to insert private SEI messages before each picture when encoding with x264. As far as i see from the libx264.c code, it is not supported up to now. Am i correct ? If yes, i am willing to push patch to support this, but do you have a preferred way to do this (ie thru medata field of AVFrame ? thru sidedata of AVFrame ? ...) Thanks for your hints, Regards, SF

2 1

Install ffmpeg 3 on RHEL 7
by Legault, Phillip [GTSUS] 05 Jan '18

05 Jan '18

Anyone have any idea on how to get ffmpeg to install on RHEL 7?

4 12

Keeping A/V sync during telecine
by Carl Zwanzig 02 Jan '18

02 Jan '18

Hello, In order to support a legacy analog NTSC system, I need to convert a pile of programs from 24p to 60i with a 3:2 pulldown. I've been successful with the video, however sometimes the audio comes out early. In some test cases, it's noticeably off even a couple of minutes into program; can't really tell if it drifts further since it's not in sync to start. (And, of course, some programs convert just fine.) Example: cpz@video-proc-0:/mnt/videofiles % ffmpeg -r ntsc-film -i INPUT.vob -vf telecine -dc 9 -target ntsc-dvd -flags +ilme+ildct -alternate_scan 1 -top 0 OUTPUT.mpg ffmpeg version 3.3.5 Copyright (c) 2000-2017 the FFmpeg developers built with FreeBSD clang version 4.0.0 (tags/RELEASE_400/final 297347) (based on LLVM 4.0.0) configuration: --prefix=/usr/local --mandir=/usr/local/man --datadir=/usr/local/share/ffmpeg --pkgconfigdir=/usr/local/libdata/pkgconfig --enable-shared --enable-pic --enable-gpl --enable-postproc --enable-avfilter --enable-avresample --enable-pthreads --cc=cc --disable-indev=alsa --disable-outdev=alsa --disable-libopencore-amrnb --disable-libopencore-amrwb --disable-libass --disable-libbs2b --disable-libcaca --disable-libcdio --disable-libcelt --disable-chromaprint --disable-libdc1394 --disable-debug --enable-htmlpages --disable-libfdk-aac --enable-ffserver --disable-libflite --enable-fontconfig --enable-libfreetype --enable-frei0r --disable-libfribidi --disable-libgme --disable-libgsm --enable-iconv --disable-libilbc --disable-indev=jack --disable-libkvazaar --disable-ladspa --disable-libmp3lame --disable-libbluray --enable-mmx --disable-libmodplug --disable-netcdf --disable-openal --disable-indev=openal --disable-opencl --enable-libopencv --disable-opengl --disable-libopenh264 --disable-libopenjpeg --enable-optimizations --disable-libopus --disable-libpulse --disable-indev=pulse --disable-outdev=pulse --enable-runtime-cpudetect --disable-librubberband --enable-libschroedinger --disable-ffplay --disable-outdev=sdl --disable-sdl2 --disable-libsmbclient --disable-libsnappy --disable-indev=sndio --disable-outdev=sndio --disable-libsoxr --disable-libspeex --enable-sse --disable-libssh --disable-libtesseract --enable-libtheora --disable-libtwolame --enable-libv4l2 --enable-vaapi --enable-vdpau --disable-libvidstab --enable-libvorbis --disable-libvo-amrwbenc --enable-libvpx --disable-libwavpack --disable-libwebp --enable-libx264 --enable-libx265 --disable-libxcb --enable-libxvid --disable-outdev=xv --disable-libzimg --disable-libzmq --disable-libzvbi --disable-gcrypt --enable-gmp --disable-librtmp --enable-gnutls --disable-openssl --enable-version3 --disable-nonfree libavutil 55. 58.100 / 55. 58.100 libavcodec 57. 89.100 / 57. 89.100 libavformat 57. 71.100 / 57. 71.100 libavdevice 57. 6.100 / 57. 6.100 libavfilter 6. 82.100 / 6. 82.100 libavresample 3. 5. 0 / 3. 5. 0 libswscale 4. 6.100 / 4. 6.100 libswresample 2. 7.100 / 2. 7.100 libpostproc 54. 5.100 / 54. 5.100 Input #0, mpeg, from 'INPUT.vob': Duration: 01:55:53.25, start: 0.084000, bitrate: 5061 kb/s Stream #0:0[0x1bf]: Data: dvd_nav_packet Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, bt470bg, top first), 720x480 [SAR 8:9 DAR 4:3], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s Stream mapping: Stream #0:1 -> #0:0 (mpeg2video (native) -> mpeg2video (native)) Stream #0:2 -> #0:1 (ac3 (native) -> ac3 (native)) Press [q] to stop, [?] for help [Parsed_telecine_0 @ 0x80c23e920] Telecine pattern 23 yields up to 2 frames per frame, pts advance factor: 4/5 Output #0, dvd, to 'OUTPUT.mpg': Metadata: encoder : Lavf57.71.100 Stream #0:0: Video: mpeg2video (Main), yuv420p(progressive), 720x480 [SAR 8:9 DAR 4:3], q=2-31, 6000 kb/s, 29.97 fps, 90k tbn, 29.97 tbc Metadata: encoder : Lavc57.89.100 mpeg2video Side data: cpb: bitrate max/min/avg: 9000000/0/6000000 buffer size: 1835008 vbv_delay: -1 Stream #0:1: Audio: ac3, 48000 Hz, stereo, fltp, 448 kb/s Metadata: encoder : Lavc57.89.100 ac3 frame=208813 fps=437 q=2.0 Lsize= 4942192kB time=01:56:07.32 bitrate=5810.9kbits/s speed=14.6x video:4470286kB audio:380256kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.889482% cpz@video-proc-0:/mnt/videofiles/ % Adding the filter "-af aresample=async=1000" did not seem to change the behavior, nor did "-async 1". Many of the originals I've been given have some sort of silent title/intro, so I wonder whether actual audio packets don't start immediately and that something isn't matching or adjusting timestamps. (Sync issues are seen with multiple players and original is fine with vlc.) I need some ideas :). Manually adjusting an audio delay isn't a great option as I have 50-60 individual items to convert, and I'd rather set a batch running and leave it. Also, I'm not overly concerned with artifacts, either visual or aural, or against encoding into h264 as part of the process. Whatever will work. Many thanks, z!

4 20

ffmpeg with resourcespace
by Legault, Phillip [GTSUS] 02 Jan '18

02 Jan '18

Does anyone on this list use ResourceSpace https://www.resourcespace.com ? I'm trying to run it on REHL 7 I had it configured on a different server and it was working fine, and I had to move to a new server. Installing ffmpeg was a challenge and now I'm running into an issue with ffmpeg_preview_options, the error I'm getting on the videos is "No compatible source was found for this video." I have been back and forth with their support and they need access to the server and I'm not able to give it to them because it is a local server on our site. That said I'm trying these parameters for the preview, and none of them seem to work. $ffmpeg_preview_options="-f flv -ar 22050 -b 650k -ab 32k -ac 1"; $ffmpeg_preview_options=" -c:v libx264 -pix_fmt yuv420p -crf 23 -preset fast -maxrate 4000k -bufsize 1835k -strict -2"; $ffmpeg_preview_options = '-f mp4 -ar 22050 -b 650k -ab 32k -ac 1 -strict experimental'; This is my ffmpage information: ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-16) configuration: --arch=x86_64 --bindir=/usr/bin --datadir=/usr/share/ffmpeg --disable-debug --disable-static --disable-stripping --enable-avfilter --enable-avresample --enable-bzlib --enable-cuda --enable-cuvid --enable-libnpp --enable-doc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gpl --enable-iconv --enable-libass --enable-libbluray --enable-libcdio --enable-libdc1394 --enable-libdrm --enable-libfdk-aac --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libilbc --enable-libkvazaar --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librsvg --enable-librtmp --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-libxcb-shape --enable-libxvid --enable-libzvbi --enable-lzma --enable-nonfree --enable-openal --enable-opencl --enable-nvenc --enable-opengl --enable-postproc --enable-pthreads --enable-sdl2 --enable-shared --enable-version3 --enable-xlib --enable-zlib --extra-cflags='-I/usr/include/nvenc -I/usr/include/cuda' --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --prefix=/usr --shlibdir=/usr/lib64 --enable-runtime-cpudetect 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 Hyper fast Audio and Video encoder usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}... Thanks in advance

2 2

Re: [FFmpeg-user] build error
by Jim Worrall 01 Jan '18

01 Jan '18

Thank you Carl Eugen. It was a completely fresh directory. Maybe an electron went awry. I wasn’t aware you could run make/gmake on individual files. When I went gmake libavformat/libavformat.version It seemed to work: GEN libavutil/libavutil.version GEN libswscale/libswscale.version GEN libswresample/libswresample.version GEN libpostproc/libpostproc.version GEN libavcodec/libavcodec.version GEN libavformat/libavformat.version GEN libavfilter/libavfilter.version GEN libavdevice/libavdevice.version gmake: 'libavformat/libavformat.version' is up to date. Then I deleted the build directory and started fresh: git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg Then got in there and repeated the previous ./configure command. Then just ‘gmake'. Then 'gmake install’ Everything completed no problem. Not sure what went wrong before, but thank you for the tip!

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Pipe while loop output
by Jonathan Baecker 30 Dec '17

30 Dec '17

Hello everybody, I play at the moment a bit with piping multiple files to the same ffmpeg instance. In shell it would look like: for i in "$list_of_multiple_files"; do ffmpeg -i "$i" [...] -f mpegts -; done | pv -q -B 50M | ffmpeg +igndts -i pipe:0 -fflags +genpts [...] -f flv rtmp://output Instead of pv you could also use mbuffer. I know concat, but I want to be more flexible, that is why I try this way. I did some test and they all look good for me, but until now I have not make any test over multiple hours. My question is, do you think this can work with many clips over hours? Or can run this out of sync? My worry is, because of ignoring the dts the audio can go out of sync with time, specially when in some clips the audio and video line have not the same length. Regards Jonathan

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Mac Frameserving
by Jonathan Fitzgerald 30 Dec '17

30 Dec '17

I would like to frame serve from premiere pro to ffmpeg on a Mac. How can I do this?

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