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  • AWS Lambda : ffmpeg thumbnails Generator : empty JPG

    3 septembre 2020, par Magikey

    When a video is uploaded on S3 i want to store a JPG screenshot.

    



    On a lambda function with amazon AWS, i do :

    



    ...

  let tmpFile = createWriteStream(`/tmp/screenshot.jpg`)

  var ffmpeg = spawn(ffmpegPath, [
      "-ss","00:00:05",
      "-i", target,
      "-vf", "thumbnail,scale=200:200", 
      "-qscale:v" ,"2",
      "-frames:v", "1",
      "-f", "image2",
      "-c:v", "mjpeg",
      "pipe:1"
    ]);

  ffmpeg.stdout.pipe(tmpFile).on("error", err => {
      console.log("Error A: ",err);
    });

  ffmpeg.on('error', err => {
    console.log("Error B", err)
    reject()
  })

  ffmpeg.on('close', code => {
    tmpFile.end();
    console.log('Log A', ffmpeg);

    child_process.exec("echo `ls -l -R /tmp`",
      (error, stdout, stderr) => {
        console.log(stdout)
    });

    resolve()
  })
...


    



    But the result is an empty JPG file in S3.

    



    Logs shows no errors, my "target" is OK, stdout ls show me the empty JPG file.

    



    I have try a lot of things, like use other version of ffmpeg but same.

    



    There is the "console.log('Log A', ffmpeg)" :

    



    ChildProcess {
 _events: [Object: null prototype] { error: [Function], close: [Function] },
 _eventsCount: 2,
 _maxListeners: undefined,
 _closesNeeded: 3,
 _closesGot: 3,
 connected: false,
 signalCode: 'SIGSEGV',
 exitCode: null,
 killed: false,
 spawnfile: '/opt/nodejs/ffmpeg',
 _handle: null,
 spawnargs: [
   '/opt/nodejs/ffmpeg',
   '-ss',
   '00:00:05',
   '-i',
   'https://xxxxxxxxx',
   '-vf',
   'thumbnail,scale=200:200',
   '-qscale:v',
   '2',
   '-frames:v',
   '1',
   '-f',
   'image2',
   '-v',
   '16',
   '-c:v',
   'mjpeg',
   'pipe:1'
 ],
 pid: 24,
 stdin: Socket {
   connecting: false,
   _hadError: false,
   _parent: null,
   _host: null,
   _readableState: ReadableState {
     objectMode: false,
     highWaterMark: 16384,
     buffer: BufferList { head: null, tail: null, length: 0 },
     length: 0,
     pipes: null,
     pipesCount: 0,
     flowing: null,
     ended: false,
     endEmitted: false,
     reading: false,
     sync: true,
     needReadable: false,
     emittedReadable: false,
     readableListening: false,
     resumeScheduled: false,
     paused: true,
     emitClose: false,
     autoDestroy: false,
     destroyed: true,
     defaultEncoding: 'utf8',
     awaitDrain: 0,
     readingMore: false,
     decoder: null,
     encoding: null
   },
   readable: false,
   _events: [Object: null prototype] { end: [Function: onReadableStreamEnd] },
   _eventsCount: 1,
   _maxListeners: undefined,
   _writableState: WritableState {
     objectMode: false,
     highWaterMark: 16384,
     finalCalled: false,
     needDrain: false,
     ending: false,
     ended: false,
     finished: false,
     destroyed: true,
     decodeStrings: false,
     defaultEncoding: 'utf8',
     length: 0,
     writing: false,
     corked: 0,
     sync: true,
     bufferProcessing: false,
     onwrite: [Function: bound onwrite],
     writecb: null,
     writelen: 0,
     bufferedRequest: null,
     lastBufferedRequest: null,
     pendingcb: 0,
     prefinished: false,
     errorEmitted: false,
     emitClose: false,
     autoDestroy: false,
     bufferedRequestCount: 0,
     corkedRequestsFree: [Object]
   },
   writable: false,
   allowHalfOpen: false,
   _sockname: null,
   _pendingData: null,
   _pendingEncoding: '',
   server: null,
   _server: null,
   [Symbol(asyncId)]: 5,
   [Symbol(kHandle)]: null,
   [Symbol(lastWriteQueueSize)]: 0,
   [Symbol(timeout)]: null,
   [Symbol(kBuffer)]: null,
   [Symbol(kBufferCb)]: null,
   [Symbol(kBufferGen)]: null,
   [Symbol(kBytesRead)]: 0,
   [Symbol(kBytesWritten)]: 0
 },
 stdout: Socket {
   connecting: false,
   _hadError: false,
   _parent: null,
   _host: null,
   _readableState: ReadableState {
     objectMode: false,
     highWaterMark: 16384,
     buffer: BufferList { head: null, tail: null, length: 0 },
     length: 0,
     pipes: null,
     pipesCount: 0,
     flowing: false,
     ended: true,
     endEmitted: true,
     reading: false,
     sync: false,
     needReadable: false,
     emittedReadable: false,
     readableListening: false,
     resumeScheduled: false,
     paused: false,
     emitClose: false,
     autoDestroy: false,
     destroyed: true,
     defaultEncoding: 'utf8',
     awaitDrain: 0,
     readingMore: false,
     decoder: null,
     encoding: null
   },
   readable: false,
   _events: [Object: null prototype] {
     end: [Function: onReadableStreamEnd],
     close: [Function]
   },
   _eventsCount: 2,
   _maxListeners: undefined,
   _writableState: WritableState {
     objectMode: false,
     highWaterMark: 16384,
     finalCalled: false,
     needDrain: false,
     ending: false,
     ended: false,
     finished: false,
     destroyed: true,
     decodeStrings: false,
     defaultEncoding: 'utf8',
     length: 0,
     writing: false,
     corked: 0,
     sync: true,
     bufferProcessing: false,
     onwrite: [Function: bound onwrite],
     writecb: null,
     writelen: 0,
     bufferedRequest: null,
     lastBufferedRequest: null,
     pendingcb: 0,
     prefinished: false,
     errorEmitted: false,
     emitClose: false,
     autoDestroy: false,
     bufferedRequestCount: 0,
     corkedRequestsFree: [Object]
   },
   writable: false,
   allowHalfOpen: false,
   _sockname: null,
   _pendingData: null,
   _pendingEncoding: '',
   server: null,
   _server: null,
   write: [Function: writeAfterFIN],
   [Symbol(asyncId)]: 6,
   [Symbol(kHandle)]: null,
   [Symbol(lastWriteQueueSize)]: 0,
   [Symbol(timeout)]: null,
   [Symbol(kBuffer)]: null,
   [Symbol(kBufferCb)]: null,
   [Symbol(kBufferGen)]: null,
   [Symbol(kBytesRead)]: 0,
   [Symbol(kBytesWritten)]: 0
 },
 stderr: Socket {
   connecting: false,
   _hadError: false,
   _parent: null,
   _host: null,
   _readableState: ReadableState {
     objectMode: false,
     highWaterMark: 16384,
     buffer: BufferList { head: null, tail: null, length: 0 },
     length: 0,
     pipes: null,
     pipesCount: 0,
     flowing: null,
     ended: true,
     endEmitted: true,
     reading: false,
     sync: false,
     needReadable: false,
     emittedReadable: false,
     readableListening: false,
     resumeScheduled: false,
     paused: true,
     emitClose: false,
     autoDestroy: false,
     destroyed: true,
     defaultEncoding: 'utf8',
     awaitDrain: 0,
     readingMore: false,
     decoder: null,
     encoding: null
   },
   readable: false,
   _events: [Object: null prototype] {
     end: [Function: onReadableStreamEnd],
     close: [Function]
   },
   _eventsCount: 2,
   _maxListeners: undefined,
   _writableState: WritableState {
     objectMode: false,
     highWaterMark: 16384,
     finalCalled: false,
     needDrain: false,
     ending: false,
     ended: false,
     finished: false,
     destroyed: true,
     decodeStrings: false,
     defaultEncoding: 'utf8',
     length: 0,
     writing: false,
     corked: 0,
     sync: true,
     bufferProcessing: false,
     onwrite: [Function: bound onwrite],
     writecb: null,
     writelen: 0,
     bufferedRequest: null,
     lastBufferedRequest: null,
     pendingcb: 0,
     prefinished: false,
     errorEmitted: false,
     emitClose: false,
     autoDestroy: false,
     bufferedRequestCount: 0,
     corkedRequestsFree: [Object]
   },
   writable: false,
   allowHalfOpen: false,
   _sockname: null,
   _pendingData: null,
   _pendingEncoding: '',
   server: null,
   _server: null,
   write: [Function: writeAfterFIN],
   [Symbol(asyncId)]: 7,
   [Symbol(kHandle)]: null,
   [Symbol(lastWriteQueueSize)]: 0,
   [Symbol(timeout)]: null,
   [Symbol(kBuffer)]: null,
   [Symbol(kBufferCb)]: null,
   [Symbol(kBufferGen)]: null,
   [Symbol(kBytesRead)]: 0,
   [Symbol(kBytesWritten)]: 0
 },
 stdio: [
   Socket {
     connecting: false,
     _hadError: false,
     _parent: null,
     _host: null,
     _readableState: [ReadableState],
     readable: false,
     _events: [Object: null prototype],
     _eventsCount: 1,
     _maxListeners: undefined,
     _writableState: [WritableState],
     writable: false,
     allowHalfOpen: false,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server: null,
     _server: null,
     [Symbol(asyncId)]: 5,
     [Symbol(kHandle)]: null,
     [Symbol(lastWriteQueueSize)]: 0,
     [Symbol(timeout)]: null,
     [Symbol(kBuffer)]: null,
     [Symbol(kBufferCb)]: null,
     [Symbol(kBufferGen)]: null,
     [Symbol(kBytesRead)]: 0,
     [Symbol(kBytesWritten)]: 0
   },
   Socket {
     connecting: false,
     _hadError: false,
     _parent: null,
     _host: null,
     _readableState: [ReadableState],
     readable: false,
     _events: [Object: null prototype],
     _eventsCount: 2,
     _maxListeners: undefined,
     _writableState: [WritableState],
     writable: false,
     allowHalfOpen: false,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server: null,
     _server: null,
     write: [Function: writeAfterFIN],
     [Symbol(asyncId)]: 6,
     [Symbol(kHandle)]: null,
     [Symbol(lastWriteQueueSize)]: 0,
     [Symbol(timeout)]: null,
     [Symbol(kBuffer)]: null,
     [Symbol(kBufferCb)]: null,
     [Symbol(kBufferGen)]: null,
     [Symbol(kBytesRead)]: 0,
     [Symbol(kBytesWritten)]: 0
   },
   Socket {
     connecting: false,
     _hadError: false,
     _parent: null,
     _host: null,
     _readableState: [ReadableState],
     readable: false,
     _events: [Object: null prototype],
     _eventsCount: 2,
     _maxListeners: undefined,
     _writableState: [WritableState],
     writable: false,
     allowHalfOpen: false,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server: null,
     _server: null,
     write: [Function: writeAfterFIN],
     [Symbol(asyncId)]: 7,
     [Symbol(kHandle)]: null,
     [Symbol(lastWriteQueueSize)]: 0,
     [Symbol(timeout)]: null,
     [Symbol(kBuffer)]: null,
     [Symbol(kBufferCb)]: null,
     [Symbol(kBufferGen)]: null,
     [Symbol(kBytesRead)]: 0,
     [Symbol(kBytesWritten)]: 0
   }
 ]
} ```


    


  • issue streaming to instagram with FFmpeg

    24 septembre 2021, par 1 K1

    Trying to stream from OBS using nginx server to Instagram using ffmpeg. There are no problem If I stream with a same settings to facebook. There is only a problem while streaming to Instagram. Also, if I do stream a video file instead of camera from OBS, there are no problem. So there is a problem While streaming from OBS through nginx server with ffmpeg.

    


    command is : ffmpeg -i rtmp://192.168.12.190:1935/live -filter_complex " [0] transpose=dir=1 [rotated] ; [rotated] scale=480:-2 " -max_muxing_queue_size 9999 -preset superfast -b:v 2000k -minrate 1500k -maxrate 3000k -bufsize 3200k -vcodec libx264 -r 30 -f flv rtmps://live-upload.instagram.com:443/rtmp/!streamKey!

    


    Getting following log from mmpeg :

    


    ffmpeg version N-90636-gc837918f50 Copyright (c) 2000-2018 the FFmpeg developers
 built with gcc 7.3.0 (GCC)
 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
 libavutil      56. 13.100 / 56. 13.100
 libavcodec     58. 17.100 / 58. 17.100
 libavformat    58. 11.101 / 58. 11.101
 libavdevice    58.  2.100 / 58.  2.100
 libavfilter     7. 14.100 /  7. 14.100
 libswscale      5.  0.102 /  5.  0.102
 libswresample   3.  0.101 /  3.  0.101
 libpostproc    55.  0.100 / 55.  0.100
Input #0, flv, from 'rtmp://192.168.12.190:1935/live':
 Metadata:
   Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
   displayWidth    : 1280
   displayHeight   : 720
   fps             : 30
   profile         :
   level           :
 Duration: 00:00:00.00, start: 836.994000, bitrate: N/A
   Stream #0:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 163 kb/s
   Stream #0:1: Video: h264 (High), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 5120 kb/s, 30 fps, 30 tbr, 1k tbn, 60 tbc
Stream mapping:
 Stream #0:1 (h264) -> transpose (graph 0)
 scale (graph 0) -> Stream #0:0 (libx264)
 Stream #0:0 -> #0:1 (aac (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
[libx264 @ 000001a25ad8e6c0] using SAR=1281/1280
[libx264 @ 000001a25ad8e6c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 000001a25ad8e6c0] profile High, level 3.1
[libx264 @ 000001a25ad8e6c0] 264 - core 155 r2901 7d0ff22 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x3 me=dia subme=1 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=18 lookahead_threads=3 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=0 rc=abr mbtree=0 bitrate=2000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=3000 vbv_bufsize=3200 nal_hrd=none filler=0 ip_ratio=1.40 pb_ratio=1.30 aq=1:1.00
Output #0, flv, to 'rtmps://live-upload.instagram.com:443/rtmp/___my_key_here':
 Metadata:
   Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
   displayWidth    : 1280
   displayHeight   : 720
   fps             : 30
   profile         :
   level           :
   encoder         : Lavf58.11.101
   Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 480x854 [SAR 1281:1280 DAR 9:16], q=-1--1, 2000 kb/s, 30 fps, 1k tbn, 30 tbc
   Metadata:
     encoder         : Lavc58.17.100 libx264
   Side data:
     cpb: bitrate max/min/avg: 3000000/0/2000000 buffer size: 3200000 vbv_delay: -1
   Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 48000 Hz, stereo, fltp
   Metadata:
     encoder         : Lavc58.17.100 libmp3lame
[tls @ 000001a25b642e40] Error in the push function.
av_interleaved_write_frame(): I/O error
   Last message repeated 1 times
[flv @ 000001a25bc4db80] Failed to update header with correct duration.
[flv @ 000001a25bc4db80] Failed to update header with correct filesize.
Error writing trailer of rtmps://live-upload.instagram.com:443/rtmp/___my_key_here__: I/O error
frame=   62 fps=0.0 q=11.0 Lsize=     265kB time=00:00:07.05 bitrate= 307.2kbits/s speed=17.1x
video:175kB audio:111kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[tls @ 000001a25b642e40] The specified session has been invalidated for some reason.
   Last message repeated 1 times
[libx264 @ 000001a25ad8e6c0] frame I:1     Avg QP:14.37  size: 12215
[libx264 @ 000001a25ad8e6c0] frame P:16    Avg QP:14.39  size: 13130
[libx264 @ 000001a25ad8e6c0] frame B:45    Avg QP:15.80  size:  4828
[libx264 @ 000001a25ad8e6c0] consecutive B-frames:  3.2%  0.0%  0.0% 96.8%
[libx264 @ 000001a25ad8e6c0] mb I  I16..4: 52.2% 22.7% 25.1%
[libx264 @ 000001a25ad8e6c0] mb P  I16..4:  0.2%  0.6%  0.7%  P16..4: 48.7%  0.0%  0.0%  0.0%  0.0%    skip:49.8%
[libx264 @ 000001a25ad8e6c0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8: 16.1%  0.0%  0.0%  direct:21.1%  skip:62.7%  L0:38.2% L1:50.0% BI:11.8%
[libx264 @ 000001a25ad8e6c0] final ratefactor: 16.75
[libx264 @ 000001a25ad8e6c0] 8x8 transform intra:26.5% inter:48.4%
[libx264 @ 000001a25ad8e6c0] coded y,uvDC,uvAC intra: 58.0% 51.2% 38.8% inter: 22.3% 27.8% 13.6%
[libx264 @ 000001a25ad8e6c0] i16 v,h,dc,p: 95%  2%  2%  1%
[libx264 @ 000001a25ad8e6c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 60%  4%  9%  2%  4%  9%  2%  6%  4%
[libx264 @ 000001a25ad8e6c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 51%  8% 11%  5%  4%  9%  2%  7%  3%
[libx264 @ 000001a25ad8e6c0] i8c dc,h,v,p: 65%  8% 21%  6%
[libx264 @ 000001a25ad8e6c0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 000001a25ad8e6c0] kb/s:1701.52
Conversion failed!


    


  • ProcessBuilder is not called when trying to start a process

    15 juin 2022, par xnok

    I am trying to understand more about the ffmpeg usage in JavaCV for android studio and for said task I am trying to use ProcessBuilder. I tried writting a simple program to debug the pb.start(); Although, I am not getting a response. What I did was to start a default/empty activity and pasted the following program :

    


    package com.example.myapplication;

import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;

import org.bytedeco.javacpp.Loader;

import android.os.Build;
import android.os.Bundle;
import android.util.Log;

public class MainActivity extends AppCompatActivity {
    static final int cols = 192;
    static final int rows = 108;
    static final String ffmpeg = Loader.load(org.bytedeco.ffmpeg.ffmpeg.class);
    static final String rtmp_url = "test.flv";
    static final String[] command = {ffmpeg,
            "-y",
            "-f", "rawvideo",
            "-vcodec", "rawvideo",
            "-pix_fmt", "bgr24",
            "-s", (Integer.toString(cols) + "x" + Integer.toString(rows)),
            "-r", "10",
            "-i", "pipe:",
            "-c:v", "libx264",
            "-pix_fmt", "yuv420p",
            "-preset", "ultrafast",
            "-f", "flv",
            rtmp_url};
    @RequiresApi(api = Build.VERSION_CODES.O)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        new Thread(t1).start();

    }
    private static Runnable t1 = () -> {
        Log.e("TAG", "void OnCreate called successfully!");
        ProcessBuilder pb = new ProcessBuilder(command).redirectErrorStream(true);
        pb.redirectErrorStream(true);
        try {
            Process process = pb.start();
            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
            OutputStream writer = process.getOutputStream();
            Log.e("TAG", "Something good happened here");
        } catch (IOException e) {
            e.printStackTrace();
            Log.e("TAG", "Nothing good happened here");
        }
    };


}


    


    My current problem is that I can't seem to start properly the processBuilder process via pb.start() ;

    


    I get the following logs from the logcat panel :

    


    2022-06-14 17:24:46.328 13371-13371/com.example.myapplication E/TAG: void OnCreate called successfully!
2022-06-14 17:24:46.333 13371-13371/com.example.myapplication E/TAG: Nothing good happened here


    


    I'd like to understand why is it skipping the try/catch block and not starting the process ?

    


    EDIT : I made some changes as per @g00se's suggestions and I got the following stack trace from the code above :

    


    2022-06-15 00:32:26.700 29787-29787/? E/USNET: USNET: appName: com.example.myapplication
2022-06-15 00:32:29.328 29787-29828/com.example.myapplication E/TAG: void OnCreate called successfully!
2022-06-15 00:32:29.330 29787-29828/com.example.myapplication E/AndroidRuntime: FATAL EXCEPTION: Thread-4
    Process: com.example.myapplication, PID: 29787
    java.lang.NullPointerException
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1012)
        at com.example.myapplication.MainActivity.lambda$static$0(MainActivity.java:48)
        at com.example.myapplication.MainActivity$$ExternalSyntheticLambda0.run(Unknown Source:0)
        at java.lang.Thread.run(Thread.java:920)


    


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