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• FFMPEG error when saving NDI stream to mp4

  22 septembre 2020, par user1163234

  I am trying to record a NDI stream to a MP4 file(I want to stream the mp4 to rtmp endpoint after saving file). However I am getting this error when running this class. https://github.com/WalkerKnapp/devolay/blob/master/examples/src/main/java/com/walker/devolayexamples/recording/RecordingExample.java

  


  Error :

  


  Connecting to source: DESKTOP-GQNH46Q (Ari PC output)
[file @ 0x7fb4f2d48540] Setting default whitelist 'file,crypto'
x265 [info]: HEVC encoder version 0.0
x265 [info]: build info [Mac OS X][clang 8.1.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
x265 [info]: Main profile, Level-3.1 (Main tier)
x265 [info]: Thread pool created using 8 threads
x265 [info]: Slices                              : 1
x265 [info]: frame threads / pool features       : 1 / wpp(12 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge         : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias: 1 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt        : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb       : 1 / 1 / 0
x265 [info]: References / ref-limit  cu / depth  : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree  : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress            : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip signhide tmvp b-intra
x265 [info]: tools: strong-intra-smoothing lslices=4 deblock sao
[SWR @ 0x7fb4f8893000] Using fltp internally between filters
[mp4 @ 0x7fb4f3820200] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 135 >= 107
Failed to write video flush packet, skipping: Invalid argument
configurationVersion:                1
general_profile_space:               0
general_tier_flag:                   0
general_profile_idc:                 1
general_profile_compatibility_flags: 0x60000000
general_constraint_indicator_flags:  0x900000000000
general_level_idc:                   93
min_spatial_segmentation_idc:        0
parallelismType:                     0
chromaFormat:                        1
bitDepthLumaMinus8:                  0
bitDepthChromaMinus8:                0
avgFrameRate:                        0
constantFrameRate:                   0
numTemporalLayers:                   1
temporalIdNested:                    1
lengthSizeMinusOne:                  3
numOfArrays:                         4
array_completeness[0]:               0
NAL_unit_type[0]:                    32
numNalus[0]:                         1
nalUnitLength[0][0]:                 24
array_completeness[1]:               0
NAL_unit_type[1]:                    33
numNalus[1]:                         1
nalUnitLength[1][0]:                 41
array_completeness[2]:               0
NAL_unit_type[2]:                    34
numNalus[2]:                         1
nalUnitLength[2][0]:                 7
array_completeness[3]:               0
NAL_unit_type[3]:                    39
numNalus[3]:                         1
nalUnitLength[3][0]:                 2050
[AVIOContext @ 0x7fb4f2d48640] Statistics: 2 seeks, 4 writeouts
x265 [info]: frame I:      1, Avg QP:14.03  kb/s: 16.33   
x265 [info]: frame P:     36, Avg QP:21.67  kb/s: 0.04    
x265 [info]: frame B:     73, Avg QP:24.22  kb/s: 0.03    
x265 [info]: Weighted P-Frames: Y:0.0% UV:0.0%
x265 [info]: consecutive B-frames: 28.9% 13.2% 18.4% 2.6% 36.8% 

encoded 110 frames in 15.13s (7.27 fps), 0.18 kb/s, Avg QP:23.29
[aac @ 0x7fb4f6aa6200] Qavg: 65536.000


  


• What's the best FFMPEG method for frequent, automated compilation of timelapse videos ?

  5 août 2020, par GoOutside

  I have a web application running on a not-particularly beefy Ubuntu Amazon Lightsail instance that uses FFMPEG to build a timelapse video generated from downloaded .jpg webcam photos taken every 2 minutes throughout the day (720 total images each day, which grows throughout the day as new images are downloaded).

  


  The code I'm running every 20 minutes is this :

  


  ffmpeg -y -r 24 -pattern_type glob -I 'picturefolder/*.jpg' -s 1024x576 -vcodec libx264 picturefolder/timelapse.mp4

  


  This mostly works, but it is often quite slow, taking 30-60 seconds to run and getting slower as the day goes on, of course.

  


  Recently, I tried to use concat instead of globbing the entire folder over and over. I did not see a noticeable performance improvement, ass it appears the concat processes the entire video in order to add even just a few frames to the end of it.

  


  My question for any FFMPEG experts out there : what is the most efficient way to handle this kind of automated timelapse creation, given my setup ? Is there a flag I'm missing ? Perhaps a different, more efficient method ? Or maybe a way to have the FFMPEG process just crawl through this at a more 'slow and steady' pace instead of big bursts of CPU usage.

  


  Or am I stuck with this and should just deal with it ? My ultimate goal would be to continue using my current tier (2 GB RAM, 1 vCPU) without the expense of upgrading. Thank you very kindly for your help !

  


• JavaFX media issue on Ubuntu : Could not create player

  14 mai, par parsa2820

  I am trying to play mp3 file on JavaFX-11.0.2 on Ubuntu-20.04 using JDK-13.0.2 but I keep getting this same error every time. While I was searching for that I found that JavaFX uses older version of some libraries(See this issue on github). So I compiled and installed ffmpeg-3.1.11 from source. But the same exception is thrown. I put my code and error message bellow. I stuck on this for days so I really appreciate any help. Thanks.

  


  note : This is not duplicate qeustion. All other questions regarding to this error happend on different versions and had different causes. I tried most of them but none of them works for me.

  


  /usr/lib/jvm/jdk-13.0.2/bin/java --module-path /opt/javafx-sdk-11.0.2/lib --add-modules=javafx.controls,javafx.fxml,javafx.media -Djava.library.path=/opt/javafx-sdk-11.0.2/lib -javaagent:/opt/idea-IU-201.7846.76/lib/idea_rt.jar=46237:/opt/idea-IU-201.7846.76/bin -Dfile.encoding=UTF-8 -classpath /home/parsa/Documents/welanner/target/classes:/opt/javafx-sdk-11.0.2/lib/src.zip:/opt/javafx-sdk-11.0.2/lib/javafx-swt.jar:/opt/javafx-sdk-11.0.2/lib/javafx.web.jar:/opt/javafx-sdk-11.0.2/lib/javafx.base.jar:/opt/javafx-sdk-11.0.2/lib/javafx.fxml.jar:/opt/javafx-sdk-11.0.2/lib/javafx.media.jar:/opt/javafx-sdk-11.0.2/lib/javafx.swing.jar:/opt/javafx-sdk-11.0.2/lib/javafx.controls.jar:/opt/javafx-sdk-11.0.2/lib/javafx.graphics.jar:/home/parsa/.m2/repository/com/google/code/gson/gson/2.8.6/gson-2.8.6.jar view.GUI&#xA;Exception in Application start method&#xA;java.lang.reflect.InvocationTargetException&#xA;    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)&#xA;    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)&#xA;    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&#xA;    at java.base/java.lang.reflect.Method.invoke(Method.java:567)&#xA;    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:464)&#xA;    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:363)&#xA;    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)&#xA;    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)&#xA;    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)&#xA;    at java.base/java.lang.reflect.Method.invoke(Method.java:567)&#xA;    at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)&#xA;Caused by: java.lang.RuntimeException: Exception in Application start method&#xA;    at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:900)&#xA;    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:195)&#xA;    at java.base/java.lang.Thread.run(Thread.java:830)&#xA;Caused by: MediaException: UNKNOWN : com.sun.media.jfxmedia.MediaException: Could not create player! : com.sun.media.jfxmedia.MediaException: Could not create player!&#xA;    at javafx.media/javafx.scene.media.MediaException.exceptionToMediaException(MediaException.java:146)&#xA;    at javafx.media/javafx.scene.media.MediaPlayer.init(MediaPlayer.java:518)&#xA;    at javafx.media/javafx.scene.media.MediaPlayer.<init>(MediaPlayer.java:421)&#xA;    at view.GUI.start(GUI.java:13)&#xA;    at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:846)&#xA;    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:455)&#xA;    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)&#xA;    at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)&#xA;    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)&#xA;    at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)&#xA;    at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method)&#xA;    at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277)&#xA;    ... 1 more&#xA;Caused by: com.sun.media.jfxmedia.MediaException: Could not create player!&#xA;    at javafx.media/com.sun.media.jfxmediaimpl.NativeMediaManager.getPlayer(NativeMediaManager.java:295)&#xA;    at javafx.media/com.sun.media.jfxmedia.MediaManager.getPlayer(MediaManager.java:118)&#xA;    at javafx.media/javafx.scene.media.MediaPlayer.init(MediaPlayer.java:474)&#xA;    ... 11 more&#xA;Exception running application view.GUI&#xA;&#xA;Process finished with exit code 1&#xA;</init>

  


  This is my code. I know path and other things are correct because I can run it on Windows properly.

  


  package view;

import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.stage.Stage;

import java.io.File;

public class GUI extends javafx.application.Application{
    public void start(Stage stage) throws Exception {
        String path = "/home/parsa/Music/Ninoush.mp3";
        Media media = new Media(new File(path).toURI().toString());
        MediaPlayer mediaPlayer = new MediaPlayer(media);
        mediaPlayer.setAutoPlay(true);
        stage.setTitle("Playing audio");
        stage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}


  


  This is my ffmpeg and libraries versions :

  


  ffmpeg version 3.1.11 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
configuration: 
libavutil      55. 28.100 / 55. 28.100
libavcodec     57. 48.101 / 57. 48.101
libavformat    57. 41.100 / 57. 41.100
libavdevice    57.  0.101 / 57.  0.101
libavfilter     6. 47.100 /  6. 47.100
libswscale      4.  1.100 /  4.  1.100
libswresample   2.  1.100 /  2.  1.100


  


  Edit 3 : I can play wav file this way but I can't play mp3.