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  • FFmpeg image to video conversion error : [image2] Opening file for reading

    14 février 2018, par user1690179

    I am running ffmpeg on an AWS Lambda instance. The Lambda function takes an input image and transcodes it into a video segment using ffmpeg :

    ffmpeg -loop 1 -i /tmp/photo-SNRUR7ZS13.jpg -c:v libx264 -t 7.00 -pix_fmt yuv420p -vf scale=1280x720 /tmp/output.mp4

    I am seeing inconsistent behavior where sometimes the output video is shorter than the specified duration. This happens inconsistently to random images. The same exact image sometimes renders correctly, and sometimes is cut short.

    This behavior only happens on Lambda. I am not able to replicate this on my local computer, or on a dedicated EC2 instance with the same environment that runs on lambda.

    I noticed that when the output video is short, the ffmpeg log is different. The main difference are repeated [image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for reading lines. See ffmpeg logs below.

    Normal execution with the correct output video length :

        ffmpeg -loop 1 -i /tmp/photo-SNRUR7ZS13.jpg -c:v libx264 -t 7.00 -pix_fmt yuv420p -vf scale=1280x720 /tmp/video-TMB6RNO0EE.mp4
    
ffmpeg version N-89773-g7fcbebbeaf-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 6.4.0 (Debian 6.4.0-11) 20171206
    
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
    
  libavutil      56.  7.100 / 56.  7.100
    
  libavcodec     58.  9.100 / 58.  9.100
    
  libavformat    58.  3.100 / 58.  3.100
    
  libavdevice    58.  0.100 / 58.  0.100
    
  libavfilter     7. 11.101 /  7. 11.101
    
  libswscale      5.  0.101 /  5.  0.101
    
  libswresample   3.  0.101 /  3.  0.101
    
  libpostproc    55.  0.100 / 55.  0.100
    
Input #0, image2, from '/tmp/photo-SNRUR7ZS13.jpg':
    
  Duration: 00:00:00.04, start: 0.000000, bitrate: 18703 kb/s
    
    Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 687x860 [SAR 200:200 DAR 687:860], 25 fps, 25 tbr, 25 tbn, 25 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
[swscaler @ 0x5837900] deprecated pixel format used, make sure you did set range correctly
    
[libx264 @ 0x51c2340] using SAR=1477/3287
    
[libx264 @ 0x51c2340] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 0x51c2340] profile High, level 3.1
    
[libx264 @ 0x51c2340] 264 - core 155 r61 b00bcaf - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 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=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/tmp/video-TMB6RNO0EE.mp4':
    
  Metadata:
    
    encoder         : Lavf58.3.100
    
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 6183:13760 DAR 687:860], q=-1--1, 25 fps, 12800 tbn, 25 tbc
    
    Metadata:
    
      encoder         : Lavc58.9.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
frame=   49 fps=0.0 q=28.0 size=       0kB time=-00:00:00.03 bitrate=N/A speed=N/A    
    
frame=   69 fps= 66 q=28.0 size=       0kB time=00:00:00.76 bitrate=   0.5kbits/s speed=0.728x    
    
frame=   89 fps= 57 q=28.0 size=       0kB time=00:00:01.56 bitrate=   0.2kbits/s speed=0.998x    
    
frame=  109 fps= 53 q=28.0 size=       0kB time=00:00:02.36 bitrate=   0.2kbits/s speed=1.14x    
    
frame=  129 fps= 50 q=28.0 size=       0kB time=00:00:03.16 bitrate=   0.1kbits/s speed=1.22x    
    
frame=  148 fps= 48 q=28.0 size=       0kB time=00:00:03.92 bitrate=   0.1kbits/s speed=1.27x    
    
frame=  168 fps= 47 q=28.0 size=       0kB time=00:00:04.72 bitrate=   0.1kbits/s speed=1.31x    
    
No more output streams to write to, finishing.
    
frame=  175 fps= 39 q=-1.0 Lsize=      94kB time=00:00:06.88 bitrate= 112.2kbits/s speed=1.54x    
    
video:91kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.161261%
    
Input file #0 (/tmp/photo-SNRUR7ZS13.jpg):
    
  Input stream #0:0 (video): 176 packets read (16459168 bytes); 176 frames decoded; 
    
  Total: 176 packets (16459168 bytes) demuxed
    
Output file #0 (/tmp/video-TMB6RNO0EE.mp4):
    
  Output stream #0:0 (video): 175 frames encoded; 175 packets muxed (93507 bytes); 
    
  Total: 175 packets (93507 bytes) muxed
    
[libx264 @ 0x51c2340] frame I:1     Avg QP:14.33  size: 73084
    
[libx264 @ 0x51c2340] frame P:44    Avg QP:14.09  size:   302
    
[libx264 @ 0x51c2340] frame B:130   Avg QP:23.31  size:    50
    
[libx264 @ 0x51c2340] consecutive B-frames:  0.6%  1.1%  0.0% 98.3%
    
[libx264 @ 0x51c2340] mb I  I16..4:  3.3% 84.5% 12.1%
    
[libx264 @ 0x51c2340] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  3.2%  0.1%  0.0%  0.0%  0.0%    skip:96.7%
    
[libx264 @ 0x51c2340] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.4%  0.0%  0.0%  direct: 0.0%  skip:99.6%  L0:31.2% L1:68.8% BI: 0.0%
    
[libx264 @ 0x51c2340] 8x8 transform intra:84.5% inter:98.8%
    
[libx264 @ 0x51c2340] coded y,uvDC,uvAC intra: 95.1% 63.9% 51.6% inter: 0.1% 0.6% 0.0%
    
[libx264 @ 0x51c2340] i16 v,h,dc,p: 26% 21%  4% 49%
    
[libx264 @ 0x51c2340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 27% 21%  3%  5%  6%  6%  4%  9%
    
[libx264 @ 0x51c2340] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 36% 10%  4%  7%  5%  6%  2%  6%
    
[libx264 @ 0x51c2340] i8c dc,h,v,p: 51% 29% 16%  4%
    
[libx264 @ 0x51c2340] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x51c2340] ref P L0: 96.5%  0.0%  3.3%  0.2%
    
[libx264 @ 0x51c2340] ref B L0: 42.4% 57.6%
    
[libx264 @ 0x51c2340] ref B L1: 97.0%  3.0%
    
[libx264 @ 0x51c2340] kb/s:106.08

    Log from a short video :

    ffmpeg -framerate 25 -y -loop 1 -i /tmp/photo-2HD2Z3UN3W.jpg -t 15.00 -filter_complex "[0:v]crop=h=ih:w='if(gt(a,16/9),ih*16/9,iw)':y=0:x='if(gt(a,16/9),(ow-iw)/2,0)'[tmp];[tmp]scale=-1:4000,crop=w=iw:h='min(iw*9/16,ih)':x=0:y='0.17*ih-((t/15.00)*min(0.17*ih,(ih-oh)/6))',trim=duration=15.00[tmp1];[tmp1]zoompan=z='if(lte(pzoom,1.0),1.15,max(1.0,pzoom-0.0005))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':d=1,setsar=sar=1:1[animated];[animated]fade=out:st=12.00:d=3.00:c=#000000[animated]" -map "[animated]" -pix_fmt yuv420p -s 1280x720 -y /tmp/video-QB1JCDT021.mp4
    
ffmpeg version N-89773-g7fcbebbeaf-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2018 the FFmpeg developers
    
built with gcc 6.4.0 (Debian 6.4.0-11) 20171206
    
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
    
libavutil 56. 7.100 / 56. 7.100
    
libavcodec 58. 9.100 / 58. 9.100
    
libavformat 58. 3.100 / 58. 3.100
    
libavdevice 58. 0.100 / 58. 0.100
    
libavfilter 7. 11.101 / 7. 11.101
    
libswscale 5. 0.101 / 5. 0.101
    
libswresample 3. 0.101 / 3. 0.101
    
libpostproc 55. 0.100 / 55. 0.100
    
Input #0, image2, from '/tmp/photo-2HD2Z3UN3W.jpg':
    
Duration: 00:00:00.04, start: 0.000000, bitrate: 373617 kb/s
    
Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1936x2592 [SAR 72:72 DAR 121:162], 25 fps, 25 tbr, 25 tbn, 25 tbc
    
Stream mapping:
    
Stream #0:0 (mjpeg) -> crop
    
fade -> Stream #0:0 (libx264)
    
Press [q] to stop, [?] for help
    
[swscaler @ 0x4d63b40] deprecated pixel format used, make sure you did set range correctly
    
[swscaler @ 0x4df7340] deprecated pixel format used, make sure you did set range correctly
    
[swscaler @ 0x50e97c0] deprecated pixel format used, make sure you did set range correctly
    
[swscaler @ 0x50e97c0] Warning: data is not aligned! This can lead to a speed loss
    
[libx264 @ 0x4b17480] using SAR=1/1
    
[libx264 @ 0x4b17480] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 0x4b17480] profile High, level 3.1
    
[libx264 @ 0x4b17480] 264 - core 155 r61 b00bcaf - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 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=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to '/tmp/video-QB1JCDT021.mp4':
    
Metadata:
    
encoder : Lavf58.3.100
    
Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc
    
Metadata:
    
encoder : Lavc58.9.100 libx264
    
Side data:
    
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
[swscaler @ 0x5bd0380] deprecated pixel format used, make sure you did set range correctly
    
debug=1
    
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
    
[image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for reading
    
[AVIOContext @ 0x4b6ecc0] Statistics: 1868086 bytes read, 0 seeks
    
[mjpeg @ 0x4b14940] marker=d8 avail_size_in_buf=1868084
    
[mjpeg @ 0x4b14940] marker parser used 0 bytes (0 bits)
    
[mjpeg @ 0x4b14940] marker=e0 avail_size_in_buf=1868082
    
[mjpeg @ 0x4b14940] marker parser used 16 bytes (128 bits)
    
[mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1868064
    
[mjpeg @ 0x4b14940] index=0
    
[mjpeg @ 0x4b14940] qscale[0]: 0
    
[mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
    
[mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1867995
    
[mjpeg @ 0x4b14940] index=1
    
[mjpeg @ 0x4b14940] qscale[1]: 1
    
[mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
    
[mjpeg @ 0x4b14940] marker=c0 avail_size_in_buf=1867926
    
[mjpeg @ 0x4b14940] sof0: picture: 1936x2592
    
[mjpeg @ 0x4b14940] component 0 1:1 id: 0 quant:0
    
[mjpeg @ 0x4b14940] component 1 1:1 id: 1 quant:1
    
[mjpeg @ 0x4b14940] component 2 1:1 id: 2 quant:1
    
[mjpeg @ 0x4b14940] pix fmt id 11111100
    
[mjpeg @ 0x4b14940] marker parser used 17 bytes (136 bits)
    
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867907
    
[mjpeg @ 0x4b14940] class=0 index=0 nb_codes=11
    
[mjpeg @ 0x4b14940] marker parser used 30 bytes (240 bits)
    
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867875
    
[mjpeg @ 0x4b14940] class=1 index=0 nb_codes=242
    
[mjpeg @ 0x4b14940] marker parser used 82 bytes (656 bits)
    
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867791
    
[mjpeg @ 0x4b14940] class=0 index=1 nb_codes=8
    
[mjpeg @ 0x4b14940] marker parser used 27 bytes (216 bits)
    
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867762
    
[mjpeg @ 0x4b14940] class=1 index=1 nb_codes=241
    
[mjpeg @ 0x4b14940] marker parser used 51 bytes (408 bits)
    
[mjpeg @ 0x4b14940] escaping removed 7149 bytes
    
[mjpeg @ 0x4b14940] marker=da avail_size_in_buf=1867709
    
[mjpeg @ 0x4b14940] component: 0
    
[mjpeg @ 0x4b14940] component: 1
    
[mjpeg @ 0x4b14940] component: 2
    
[mjpeg @ 0x4b14940] marker parser used 1860559 bytes (14884468 bits)
    
[mjpeg @ 0x4b14940] marker=d9 avail_size_in_buf=0
    
[mjpeg @ 0x4b14940] decode frame unused 0 bytes
    
[swscaler @ 0x5bd42c0] deprecated pixel format used, make sure you did set range correctly
    
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
    
[image2 @ 0x4b11140] Opening '/tmp/photo-2HD2Z3UN3W.jpg' for reading
    
[AVIOContext @ 0x4b6ecc0] Statistics: 1868086 bytes read, 0 seeks
    
[mjpeg @ 0x4b14940] marker=d8 avail_size_in_buf=1868084
    
[mjpeg @ 0x4b14940] marker parser used 0 bytes (0 bits)
    
[mjpeg @ 0x4b14940] marker=e0 avail_size_in_buf=1868082
    
[mjpeg @ 0x4b14940] marker parser used 16 bytes (128 bits)
    
[mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1868064
    
[mjpeg @ 0x4b14940] index=0
    
[mjpeg @ 0x4b14940] qscale[0]: 0
    
[mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
    
[mjpeg @ 0x4b14940] marker=db avail_size_in_buf=1867995
    
[mjpeg @ 0x4b14940] index=1
    
[mjpeg @ 0x4b14940] qscale[1]: 1
    
[mjpeg @ 0x4b14940] marker parser used 67 bytes (536 bits)
    
[mjpeg @ 0x4b14940] marker=c0 avail_size_in_buf=1867926
    
[mjpeg @ 0x4b14940] sof0: picture: 1936x2592
    
[mjpeg @ 0x4b14940] component 0 1:1 id: 0 quant:0
    
[mjpeg @ 0x4b14940] component 1 1:1 id: 1 quant:1
    
[mjpeg @ 0x4b14940] component 2 1:1 id: 2 quant:1
    
[mjpeg @ 0x4b14940] pix fmt id 11111100
    
[mjpeg @ 0x4b14940] marker parser used 17 bytes (136 bits)
    
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867907
    
[mjpeg @ 0x4b14940] class=0 index=0 nb_codes=11
    
[mjpeg @ 0x4b14940] marker parser used 30 bytes (240 bits)
    
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867875
    
[mjpeg @ 0x4b14940] class=1 index=0 nb_codes=242
    
[mjpeg @ 0x4b14940] marker parser used 82 bytes (656 bits)
    
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867791
    
[mjpeg @ 0x4b14940] class=0 index=1 nb_codes=8
    
[mjpeg @ 0x4b14940] marker parser used 27 bytes (216 bits)
    
[mjpeg @ 0x4b14940] marker=c4 avail_size_in_buf=1867762
    
[mjpeg @ 0x4b14940] class=1 index=1 nb_codes=241
    
[mjpeg @ 0x4b14940] marker parser used 51 bytes (408 bits)
    
[mjpeg @ 0x4b14940] escaping removed 7149 bytes
    
[mjpeg @ 0x4b14940] marker=da avail_size_in_buf=1867709
    
[mjpeg @ 0x4b14940] component: 0
    
[mjpeg @ 0x4b14940] component: 1
    
[mjpeg @ 0x4b14940] component: 2
    
[mjpeg @ 0x4b14940] marker parser used 1860559 bytes (14884468 bits)
    
[mjpeg @ 0x4b14940] marker=d9 avail_size_in_buf=0
    
[mjpeg @ 0x4b14940] decode frame unused 0 bytes
    
[swscaler @ 0x5bd8200] deprecated pixel format used, make sure you did set range correctly
    
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
    
...
    
...
    
...

    As requested, here is a link to the full log. In this log - ffmpeg renders only 323 out of 375 frames.

    The Opening '/tmp/photo-2HD2Z3UN3W.jpg' segment repeats many many times until it finally renders out a short video. Does anyone have insight into why it keeps opening the image file ? This must have something to do with the underlying issue.

  • FFmpeg - feed raw frames via pipe - FFmpeg does not detect pipe closure

    8 septembre 2018, par Rumble

    Im trying to follow these examples from C++ in Windows. Phyton Example C# Example

    I have an application that produces raw frames that shall be encoded with FFmpeg.
    The raw frames are transfered via IPC pipe to FFmpegs STDIN. That is working as expected, FFmpeg even displays the number of frames currently available.

    The problem occours when we are done sending frames. When I close the write end of the pipe I would expect FFmpeg to detect that, finish up and output the video. But that does not happen. FFmpeg stays open and seems to wait for more data.

    I made a small test project in VisualStudio.

    #include "stdafx.h" 
    
//// stdafx.h 
    
//#include "targetver.h"
    
//#include 
    
//#include 
    
//#include <iostream>
    

    
#include "Windows.h"
    
#include <cstdlib>
    

    
using namespace std;
    

    
bool WritePipe(void* WritePipe, const UINT8 *const Buffer, const UINT32 Length)
    
{
    
    if (WritePipe == nullptr || Buffer == nullptr || Length == 0)
    
    {
    
        cout &lt;&lt; __FUNCTION__ &lt;&lt; ": Some input is useless";
    
        return false;
    
    }
    

    
    // Write to pipe
    
    UINT32 BytesWritten = 0;
    
    UINT8 newline = '\n';
    
    bool bIsWritten = WriteFile(WritePipe, Buffer, Length, (::DWORD*)&amp;BytesWritten, nullptr);
    
    cout &lt;&lt; __FUNCTION__ &lt;&lt; " Bytes written to pipe " &lt;&lt; BytesWritten &lt;&lt; endl;
    
    //bIsWritten = WriteFile(WritePipe, &amp;newline, 1, (::DWORD*)&amp;BytesWritten, nullptr); // Do we need this? Actually this should destroy the image.
    

    
    FlushFileBuffers(WritePipe); // Do we need this?
    

    
    return bIsWritten;
    
}
    

    
#define PIXEL 80 // must be multiple of 8. Otherwise we get warning: Bytes are not aligned
    

    
int main()
    
{
    
    HANDLE PipeWriteEnd = nullptr;
    
    HANDLE PipeReadEnd = nullptr;
    
    {
    
        // create us a pipe for inter process communication
    
        SECURITY_ATTRIBUTES Attr = { sizeof(SECURITY_ATTRIBUTES), NULL, true };
    
        if (!CreatePipe(&amp;PipeReadEnd, &amp;PipeWriteEnd, &amp;Attr, 0))
    
        {
    
            cout &lt;&lt; "Could not create pipes" &lt;&lt; ::GetLastError() &lt;&lt; endl;
    
            system("Pause");
    
            return 0;
    
        }
    
    }
    

    
    // Setup the variables needed for CreateProcess
    
    // initialize process attributes
    
    SECURITY_ATTRIBUTES Attr;
    
    Attr.nLength = sizeof(SECURITY_ATTRIBUTES);
    
    Attr.lpSecurityDescriptor = NULL;
    
    Attr.bInheritHandle = true;
    

    
    // initialize process creation flags
    
    UINT32 CreateFlags = NORMAL_PRIORITY_CLASS;
    
    CreateFlags |= CREATE_NEW_CONSOLE;
    

    
    // initialize window flags
    
    UINT32 dwFlags = 0;
    
    UINT16 ShowWindowFlags = SW_HIDE;
    

    
    if (PipeWriteEnd != nullptr || PipeReadEnd != nullptr)
    
    {
    
        dwFlags |= STARTF_USESTDHANDLES;
    
    }
    

    
    // initialize startup info
    
    STARTUPINFOA StartupInfo = {
    
        sizeof(STARTUPINFO),
    
        NULL, NULL, NULL,
    
        (::DWORD)CW_USEDEFAULT,
    
        (::DWORD)CW_USEDEFAULT,
    
        (::DWORD)CW_USEDEFAULT,
    
        (::DWORD)CW_USEDEFAULT,
    
        (::DWORD)0, (::DWORD)0, (::DWORD)0,
    
        (::DWORD)dwFlags,
    
        ShowWindowFlags,
    
        0, NULL,
    
        HANDLE(PipeReadEnd),
    
        HANDLE(nullptr),
    
        HANDLE(nullptr)
    
    };
    

    
    LPSTR ffmpegURL = "\"PATHTOFFMPEGEXE\" -y -loglevel verbose -f rawvideo -vcodec rawvideo -framerate 1 -video_size 80x80 -pixel_format rgb24 -i - -vcodec mjpeg -framerate 1/4 -an \"OUTPUTDIRECTORY\"";
    

    
    // Finally create the process
    
    PROCESS_INFORMATION ProcInfo;
    
    if (!CreateProcessA(NULL, ffmpegURL, &amp;Attr, &amp;Attr, true, (::DWORD)CreateFlags, NULL, NULL, &amp;StartupInfo, &amp;ProcInfo))
    
    {
    
        cout &lt;&lt; "CreateProcess failed " &lt;&lt; ::GetLastError() &lt;&lt; endl;
    
    }
    
    //CloseHandle(ProcInfo.hThread);
    

    

    
        // Create images and write to pipe
    
#define MYARRAYSIZE (PIXEL*PIXEL*3) // each pixel has 3 bytes
    

    
    UINT8* Bitmap = new UINT8[MYARRAYSIZE];
    

    
    for (INT32 outerLoopIndex = 9; outerLoopIndex >= 0; --outerLoopIndex)   // frame loop
    
    {
    
        for (INT32 innerLoopIndex = MYARRAYSIZE - 1; innerLoopIndex >= 0; --innerLoopIndex) // create the pixels for each frame
    
        {
    
            Bitmap[innerLoopIndex] = (UINT8)(outerLoopIndex * 20); // some gray color
    
        }
    
        system("pause");
    
        if (!WritePipe(PipeWriteEnd, Bitmap, MYARRAYSIZE))
    
        {
    
            cout &lt;&lt; "Failed writing to pipe" &lt;&lt; endl;
    
        }
    
    }
    

    
    // Done sending images. Tell the other process. IS THIS NEEDED? HOW TO TELL FFmpeg WE ARE DONE?
    
    //UINT8 endOfFile = 0xFF; // EOF = -1 == 1111 1111 for uint8
    
    //if (!WritePipe(PipeWriteEnd, &amp;endOfFile, 1))
    
    //{
    
    //  cout &lt;&lt; "Failed writing to pipe" &lt;&lt; endl;
    
    //}
    
    //FlushFileBuffers(PipeReadEnd); // Do we need this?
    

    
    delete Bitmap;
    

    

    
    system("pause");
    

    
    // clean stuff up
    
    FlushFileBuffers(PipeWriteEnd); // Do we need this?
    

    
    if (PipeWriteEnd != NULL &amp;&amp; PipeWriteEnd != INVALID_HANDLE_VALUE)
    
    {
    
        CloseHandle(PipeWriteEnd);
    
    }
    

    
    // We do not want to destroy the read end of the pipe? Should not as that belongs to FFmpeg
    
    //if (PipeReadEnd != NULL &amp;&amp; PipeReadEnd != INVALID_HANDLE_VALUE)
    
    //{
    
    //  ::CloseHandle(PipeReadEnd);
    
    //}
    

    

    
    return 0;
    

    
}
    
</cstdlib></iostream>

    And here the output of FFmpeg

    ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 7.2.0 (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-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-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
    
  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
    
  libswscale      4.  8.100 /  4.  8.100
    
  libswresample   2.  9.100 /  2.  9.100
    
  libpostproc    54.  7.100 / 54.  7.100
    
[rawvideo @ 00000221ff992120] max_analyze_duration 5000000 reached at 5000000 microseconds st:0
    
Input #0, rawvideo, from 'pipe:':
    
  Duration: N/A, start: 0.000000, bitrate: 153 kb/s
    
    Stream #0:0: Video: rawvideo, 1 reference frame (RGB[24] / 0x18424752), rgb24, 80x80, 153 kb/s, 1 fps, 1 tbr, 1 tbn, 1 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> mjpeg (native))
    
[graph 0 input from stream 0:0 @ 00000221ff999c20] w:80 h:80 pixfmt:rgb24 tb:1/1 fr:1/1 sar:0/1 sws_param:flags=2
    
[auto_scaler_0 @ 00000221ffa071a0] w:iw h:ih flags:'bicubic' interl:0
    
[format @ 00000221ffa04e20] auto-inserting filter 'auto_scaler_0' between the filter 'Parsed_null_0' and the filter 'format'
    
[swscaler @ 00000221ffa0a780] deprecated pixel format used, make sure you did set range correctly
    
[auto_scaler_0 @ 00000221ffa071a0] w:80 h:80 fmt:rgb24 sar:0/1 -> w:80 h:80 fmt:yuvj444p sar:0/1 flags:0x4
    
Output #0, mp4, to 'c:/users/vr3/Documents/Guenni/sometest.mp4':
    
  Metadata:
    
    encoder         : Lavf57.83.100
    
    Stream #0:0: Video: mjpeg, 1 reference frame (mp4v / 0x7634706D), yuvj444p(pc), 80x80, q=2-31, 200 kb/s, 1 fps, 16384 tbn, 1 tbc
    
    Metadata:
    
      encoder         : Lavc57.107.100 mjpeg
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    
frame=   10 fps=6.3 q=1.6 size=       0kB time=00:00:09.00 bitrate=   0.0kbits/s speed=5.63x

    As you can see in the last line of te FFmpeg output, the images got trough. 10 frames are available. But after closing the pipe, FFmpeg does not close, still expecting input.

    As the linked examples show, this should be a valid method.

    Trying for a week now...

  • ffmpeg version 2.6.8 : Stream specifier ':a' in filtergraph description matches no streams

    16 décembre 2020, par Ashitaka

    I am not getting why this isn't working.. I have tried to get the video streams with [0:v]/[0:1]/[0:v:0] & the audio streams with [0:a]/[0:0]/[0:0:0].&#xA;nothing worked.

    &#xA;

    Explaining the inputs :

    &#xA;

    1.1st input stream is a video that can be of varying resolution on which the filter adds a padding on to make it 600:480.

    &#xA;

    2.2nd input is an overlay png which is already at 5:4 ratio.. just making it 600:480 before it gets overlaid in the filter.

    &#xA;

    3.3rd & 4th ones are also videos which I don't care if they get stretched.. n they are getting stretched to 600:480.

    &#xA;

    4.so finally there are 3 streams 1 overlaid video 2 stretched videos which needs to be concatenated.

    &#xA;

    here's the command :

    &#xA;

    ffmpeg &#xA;-i &#x27;/home/vidinflux/public_html/assets/temp/2018020116464612/2018020116464612.mp4&#x27; &#xA;-i &#x27;/home/vidinflux/public_html/assets/temp/2018020116464612/2018020116464612_overlay.png&#x27; &#xA;-i &#x27;/home/vidinflux/public_html/assets/user/736/video/Lines1.mp4&#x27; &#xA;-i &#x27;/home/vidinflux/public_html/assets/user/736/video/Lines11.mp4&#x27; &#xA;-filter_complex&#xA;"[0:v]trim=0:138,setpts=PTS-STARTPTS[v0];[0:a]atrim=0:138,asetpts=PTS-STARTPTS[a0];[v0]scale=&#x27;gte(iw/ih\,600/480)*600&#x2B;lt(iw/ih\,600/480)*((480*iw)/ih):lte(iw/ih\,600/480)*480&#x2B;gt(iw/ih\,600/480)*((600*ih)/iw)&#x27;,pad=&#x27;600:480:(600-gte(iw/ih\,600/480)*600-lt(iw/ih\,600/480)*((480*iw)/ih))/2:(480-lte(iw/ih\,600/480)*480-gt(iw/ih\,600/480)*((600*ih)/iw))/2:black&#x27;[x];[1:v]scale=600:480[y];[x][y]overlay=0:0[z];[2:v]scale=600:480,setsar=1:1[x0];[3:v]scale=600:480,setsar=1:1[x1];[x0][2:a][z][a0][x1][3:a]concat=n=3:v=1:a=1[v][a]" &#xA;-map "[v]" &#xA;-map "[a]" &#xA;-c:v libx264 &#xA;-shortest /home/vidinflux/public_html/assets/temp/2018020116464612/2018020116464612_final.mp4&#xA;

    &#xA;

    this is the complete error I am getting :

    &#xA;

    Stream specifier &#x27;:a&#x27; in filtergraph description  [0:v]trim=0:138,setpts=PTS-STARTPTS[v0];[0:a]atrim=0:138,asetpts=PTS-STARTPTS[a0];[v0]scale=&#x27;gte(iw/ih\,600/480)*600&#x2B;lt(iw/ih\,600/480)*((480*iw)/ih):lte(iw/ih\,600/480)*480&#x2B;gt(iw/ih\,600/480)*((600*ih)/iw)&#x27;,pad=&#x27;600:480:(600-gte(iw/ih\,600/480)*600-lt(iw/ih\,600/480)*((480*iw)/ih))/2:(480-lte(iw/ih\,600/480)*480-gt(iw/ih\,600/480)*((600*ih)/iw))/2:black&#x27;[x];[1:v]scale=600:480[y];[x][y]overlay=0:0[z];[2:v]scale=600:480,setsar=1:1[x0];[3:v]scale=600:480,setsar=1:1[x1];[x0][2:a][z][a0][x1][3:a]concat=n=3:v=1:a=1[v][a] matches no streams.&#xA;

    &#xA;

    also there are these warnings :

    &#xA;

    [Parsed_setsar_9 @ 0x219fba0] num:den syntax is deprecated, please use num/den or named options instead&#xA;[Parsed_setsar_11 @ 0x21a4840] num:den syntax is deprecated, please use num/den or named options instead&#xA;

    &#xA;

    Complete log as requested :

    &#xA;

    [root@cloud ~]# ffmpeg -i &#x27;/home/vidinflux/public_html/assets/temp/2018020116464612/2018020116464612.mp4&#x27; -i &#x27;/home/vidinflux/public_html/assets/temp/2018020116464612/2018020116464612_overlay.png&#x27; -i &#x27;/home/vidinflux/public_html/assets/user/736/video/Lines1.mp4&#x27; -i &#x27;/home/vidinflux/public_html/assets/user/736/video/Lines11.mp4&#x27; -filter_complex \ "[0:v]trim=0:138,setpts=PTS-STARTPTS[v0];[0:a]atrim=0:138,asetpts=PTS-STARTPTS[a0];[v0]scale=&#x27;gte(iw/ih\,600/480)*600&#x2B;lt(iw/ih\,600/480)*((480*iw)/ih):lte(iw/ih\,600/480)*480&#x2B;gt(iw/ih\,600/480)*((600*ih)/iw)&#x27;,pad=&#x27;600:480:(600-gte(iw/ih\,600/480)*600-lt(iw/ih\,600/480)*((480*iw)/ih))/2:(480-lte(iw/ih\,600/480)*480-gt(iw/ih\,600/480)*((600*ih)/iw))/2:black&#x27;[x];[1:v]scale=600:480[y];[x][y]overlay=0:0[z];[2:v]scale=600:480,setsar=1:1[x0];[3:v]scale=600:480,setsar=1:1[x1];[x0][2:a][z][a0][x1][3:a]concat=n=3:v=1:a=1[v][a]" -map "[v]" -map "[a]" -c:v libx264 -shortest /home/vidinflux/public_html/assets/temp/2018020116464612/2018020116464612_final.mp4&#xA;ffmpeg version 2.6.8 Copyright (c) 2000-2016 the FFmpeg developers&#xA;  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)&#xA;  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags=&#x27;-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic&#x27; --enable-bzlib --disable-crystalhd --enable-gnutls --enable-ladspa --enable-libass --enable-libdc1394 --enable-libfaac --enable-nonfree --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect&#xA;  libavutil      54. 20.100 / 54. 20.100&#xA;  libavcodec     56. 26.100 / 56. 26.100&#xA;  libavformat    56. 25.101 / 56. 25.101&#xA;  libavdevice    56.  4.100 / 56.  4.100&#xA;  libavfilter     5. 11.102 /  5. 11.102&#xA;  libavresample   2.  1.  0 /  2.  1.  0&#xA;  libswscale      3.  1.101 /  3.  1.101&#xA;  libswresample   1.  1.100 /  1.  1.100&#xA;  libpostproc    53.  3.100 / 53.  3.100&#xA;Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;/home/vidinflux/public_html/assets/temp/2018020116464612/2018020116464612.mp4&#x27;:&#xA;  Metadata:&#xA;    major_brand     : mp42&#xA;    minor_version   : 0&#xA;    compatible_brands: isommp42&#xA;    creation_time   : 2017-08-21 02:23:24&#xA;  Duration: 00:02:17.23, start: 0.000000, bitrate: 417 kb/s&#xA;    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 640x360 [SAR 1:1 DAR 16:9], 318 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)&#xA;    Metadata:&#xA;      handler_name    : VideoHandler&#xA;    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 96 kb/s (default)&#xA;    Metadata:&#xA;      creation_time   : 2017-08-21 02:23:24&#xA;      handler_name    : IsoMedia File Produced by Google, 5-11-2011&#xA;Input #1, png_pipe, from &#x27;/home/vidinflux/public_html/assets/temp/2018020116464612/2018020116464612_overlay.png&#x27;:&#xA;  Duration: N/A, bitrate: N/A&#xA;    Stream #1:0: Video: png, rgba, 600x479, 25 tbr, 25 tbn, 25 tbc&#xA;Input #2, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;/home/vidinflux/public_html/assets/user/736/video/Lines1.mp4&#x27;:&#xA;  Metadata:&#xA;    major_brand     : mp42&#xA;    minor_version   : 1&#xA;    compatible_brands: mp41mp42isom&#xA;    creation_time   : 2018-01-31 22:40:09&#xA;  Duration: 00:00:04.90, start: 0.103811, bitrate: 846 kb/s&#xA;    Stream #2:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt470bg/bt709), 1920x1080, 827 kb/s, SAR 1:1 DAR 16:9, 30 fps, 30 tbr, 90k tbn, 180k tbc (default)&#xA;    Metadata:&#xA;      creation_time   : 2018-01-31 22:40:10&#xA;      handler_name    : Core Media Video&#xA;Input #3, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;/home/vidinflux/public_html/assets/user/736/video/Lines11.mp4&#x27;:&#xA;  Metadata:&#xA;    major_brand     : mp42&#xA;    minor_version   : 1&#xA;    compatible_brands: mp41mp42isom&#xA;    creation_time   : 2018-01-31 22:40:09&#xA;  Duration: 00:00:04.90, start: 0.103811, bitrate: 846 kb/s&#xA;    Stream #3:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m/bt470bg/bt709), 1920x1080, 827 kb/s, SAR 1:1 DAR 16:9, 30 fps, 30 tbr, 90k tbn, 180k tbc (default)&#xA;    Metadata:&#xA;      creation_time   : 2018-01-31 22:40:10&#xA;      handler_name    : Core Media Video&#xA;[Parsed_setsar_9 @ 0x17c8ba0] num:den syntax is deprecated, please use num/den or named options instead&#xA;[Parsed_setsar_11 @ 0x17cd840] num:den syntax is deprecated, please use num/den or named options instead&#xA;Stream specifier &#x27;:a&#x27; in filtergraph description  [0:v]trim=0:138,setpts=PTS-STARTPTS[v0];[0:a]atrim=0:138,asetpts=PTS-STARTPTS[a0];[v0]scale=&#x27;gte(iw/ih\,600/480)*600&#x2B;lt(iw/ih\,600/480)*((480*iw)/ih):lte(iw/ih\,600/480)*480&#x2B;gt(iw/ih\,600/480)*((600*ih)/iw)&#x27;,pad=&#x27;600:480:(600-gte(iw/ih\,600/480)*600-lt(iw/ih\,600/480)*((480*iw)/ih))/2:(480-lte(iw/ih\,600/480)*480-gt(iw/ih\,600/480)*((600*ih)/iw))/2:black&#x27;[x];[1:v]scale=600:480[y];[x][y]overlay=0:0[z];[2:v]scale=600:480,setsar=1:1[x0];[3:v]scale=600:480,setsar=1:1[x1];[x0][2:a][z][a0][x1][3:a]concat=n=3:v=1:a=1[v][a] matches no streams.&#xA;

    &#xA;

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