On Sun, Jul 22, 2018 at 3:59 PM, Marton Balint <[email protected]> wrote:
> > On Wed, 18 Jul 2018, Micael Silva wrote: > > On Wed, Jul 18, 2018 at 8:13 AM, Jon <[email protected]> wrote: >> >> On Tue, 17 Jul 2018 at 23:15, Carl Eugen Hoyos <[email protected]> >>> wrote: >>> > >>> > 2018-07-17 20:16 GMT+02:00, Jon <[email protected]>: >>> > > After successfully compiling ffmpeg on Debian 9 64bit, following the >>> > > instructions at https://trac.ffmpeg.org/wiki/CompilationGuide and >>> > > adding the relevant includes for NDI using the Newtek SDK >>> > > (InstallNDISDK_v3_Linux.sh from https://www.newtek.com/ndi/sdk/) and >>> > > compiler flag (--enable-libndi_newtek), the resulting builds of >>> ffmpeg >>> > > / ffplay do now playback NDI network streams but playback performance >>> > > is poor compared to playing back through OBS using the NDI plug-in >>> > > from https://github.com/Palakis/obs-ndi on the same machine. OBS has >>> > > smooth playback whereas ffmpeg is jittery. >>> > > >>> > > ./ffplay -fs -f libndi_newtek -i "NDI test (test-laptop-pgm)" >>> > >>> > Complete, uncut console output missing. >>> > Do you see the same jitter if you reencode with ffmpeg? >>> > >>> > Carl Eugen >>> >>> Thanks for your prompt reply Carl. >>> >>> Output from ffplay which produces glitchy playback: >>> >>> $ ./ffplay -fs -f libndi_newtek -i "COMPUTER (jonny-ndi-pgm)" >>> ffplay version N-91482-g8aa6d9a Copyright (c) 2003-2018 the FFmpeg >>> developers >>> built with gcc 7 (Debian 7.3.0-25) >>> configuration: --prefix=/home/blitz/ffmpeg_build >>> --pkg-config-flags=--static >>> --extra-cflags=-I/home/blitz/ffmpeg_build/include >>> --extra-ldflags=-L/home/blitz/ffmpeg_build/lib --extra-libs='-lpthread >>> -lm' --bindir=/home/blitz/bin --enable-gpl --enable-libaom >>> --enable-libass --enable-libfdk-aac --enable-libfreetype >>> --enable-libmp3lame --enable-libopus --enable-libvorbis >>> --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree >>> --enable-libndi_newtek >>> libavutil 56. 18.102 / 56. 18.102 >>> libavcodec 58. 21.105 / 58. 21.105 >>> libavformat 58. 17.101 / 58. 17.101 >>> libavdevice 58. 4.101 / 58. 4.101 >>> libavfilter 7. 26.100 / 7. 26.100 >>> libswscale 5. 2.100 / 5. 2.100 >>> libswresample 3. 2.100 / 3. 2.100 >>> libpostproc 55. 2.100 / 55. 2.100 >>> Input #0, libndi_newtek, from 'COMPUTER (jonny-ndi-pgm)':0B f=0/0 >>> Duration: N/A, start: 3258.294488, bitrate: 443779 kb/s >>> Stream #0:0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s >>> Stream #0:1: Video: rawvideo (UYVY / 0x59565955), >>> uyvy422(progressive), 1280x720 [SAR 1:1 DAR 16:9], 442368 kb/s, 30 >>> fps, 30 tbr, 10000k tbn >>> 3275.05 A-V: -0.001 fd= 1 aq= 114KB vq=16200KB sq= 0B f=0/0 >>> >> > You should try these ffplay options > -infbuf > -sync video or -sync ext > -noframedrop > Or a combination of those :) > > Thanks, > Marton I've tried ffplay -sync video and works very well. I knew that need some clocking on the video stream but i'm very bad with ffplay options. Thanks so much! _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
