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• Getting a lot of Tail Silence when combining an image and audio into mp4 movie

  1er avril 2023, par Meryan

  As it can be seen from this snapshot the audio HELLO.mp3 combined with bitmap HELLO.jpg produced a movie HELLO_aac.mp4 that has a huge amount of tail silence

  


  

  


  The command line I was helped to put together is the following

  


  ======================== 
IN_FILES=-i ".\HELLO.JPG" -i ".\HELLO.MP3"    
OUT_FILE=".\HELLO_aac.MP4"   
EXE="S:\_BINS\FFmpeg 4.2.1 20200112\bin\ffmpeg.exe"  
OPTIONS= -loop 1   -i ".\HELLO.JPG" -i ".\HELLO.MP3"    -vf "scale=-1:1080,pad=1920:1080:(1920-iw)/2:(1080-ih)/2,setsar=1"  -c:v libx264 -profile:v main -pix_fmt yuv420p -r 24 -video_track_timescale 24000    -c:a aac    -shortest -y ".\HELLO_aac.MP4"     
======================== 



  


  Here is the captured output from FFmpeg

  


  ffmpeg version git-2020-01-10-3d894db Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20191125
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --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-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 38.100 / 56. 38.100
  libavcodec     58. 65.103 / 58. 65.103
  libavformat    58. 35.101 / 58. 35.101
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 70.101 /  7. 70.101
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, image2, from '.\HELLO.JPG':
  Duration: 00:00:00.04, start: 0.000000, bitrate: 23923 kb/s
    Stream #0:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 1600x1200 [SAR 120:120 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 25 tbc
[mp3 @ 000002019015d4c0] Estimating duration from bitrate, this may be inaccurate
Input #1, mp3, from '.\HELLO.MP3':
  Metadata:
    genre           : Blues
    id3v2_priv.XMP  : <?xpacket begin="\xef\xbb\xbf" id="W5M0MpCehiHzreSzNTczkc9d"?>\x0a\x0a \x0a  s
    Stream #1:0: Audio: mp3, 24000 Hz, mono, fltp, 32 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
  Stream #1:0 -> #0:1 (mp3 (mp3float) -> aac (native))
Press [q] to stop, [?] for help
[swscaler @ 0000020190b10380] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0000020190b10380] Warning: data is not aligned! This can lead to a speed loss
[libx264 @ 0000020190759300] using SAR=1/1
[libx264 @ 0000020190759300] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0000020190759300] profile Main, level 4.0, 4:2:0, 8-bit
[libx264 @ 0000020190759300] 264 - core 158 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=34 lookahead_threads=5 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=24 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 '.\HELLO_aac.MP4':
  Metadata:
    encoder         : Lavf58.35.101
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 24k tbn, 24 tbc
    Metadata:
      encoder         : Lavc58.65.103 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 24000 Hz, mono, fltp, 69 kb/s
    Metadata:
      encoder         : Lavc58.65.103 aac
frame=   69 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=0 drop=1 speed=   0x    
frame=   97 fps=0.0 q=-1.0 Lsize=     128kB time=00:00:03.91 bitrate= 267.1kbits/s dup=0 drop=2 speed=5.04x    
video:119kB audio:6kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.208101%
[libx264 @ 0000020190759300] frame I:1     Avg QP:12.88  size:103994
[libx264 @ 0000020190759300] frame P:24    Avg QP:14.05  size:   224
[libx264 @ 0000020190759300] frame B:72    Avg QP:12.67  size:   160
[libx264 @ 0000020190759300] consecutive B-frames:  1.0%  0.0%  0.0% 99.0%
[libx264 @ 0000020190759300] mb I  I16..4: 61.7%  0.0% 38.3%
[libx264 @ 0000020190759300] mb P  I16..4:  0.1%  0.0%  0.0%  P16..4:  0.5%  0.1%  0.0%  0.0%  0.0%    skip:99.3%
[libx264 @ 0000020190759300] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  1.6%  0.0%  0.0%  direct: 0.0%  skip:98.4%  L0:81.1% L1:18.9% BI: 0.0%
[libx264 @ 0000020190759300] coded y,uvDC,uvAC intra: 34.5% 17.3% 15.6% inter: 0.0% 0.1% 0.0%
[libx264 @ 0000020190759300] i16 v,h,dc,p: 70% 19%  7%  3%
[libx264 @ 0000020190759300] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 40% 22% 12%  4%  5%  5%  3%  5%  4%
[libx264 @ 0000020190759300] i8c dc,h,v,p: 80%  8% 10%  2%
[libx264 @ 0000020190759300] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000020190759300] ref P L0: 97.6%  0.3%  1.5%  0.6%
[libx264 @ 0000020190759300] ref B L0:  1.8% 98.2%
[libx264 @ 0000020190759300] ref B L1: 99.9%  0.1%
[libx264 @ 0000020190759300] kb/s:239.28
[aac @ 000002019075bf40] Qavg: 8004.814
======================== 


  


  I have also tried the following command line

  


  "S:\_BINS\ffmpeg-2023-03-20\bin\ffmpeg.exe" -loop 1 -i "HELLO.JPG" -i "HELLO.MP3" -c:v libx264 -tune stillimage -c:a aac -b:a 192k -pix_fmt yuv420p -y -shortest "HELLO_aac.mp4"    


  


  With similar long dead tail silence ???

  


• Using aler9/rtsp-simple-server, able to stream HLS from file but not from ffmpeg's stdin

  11 avril 2023, par Powercoder

  UPD : hehe, it actially works, but in chrome, not mozilla

  


  I want to display programmatically generated stream on a webpage in real time. For this I have rtsp-simple-server with RTSP and HLS enabled. I managed to publish a stream from file with command ffmpeg -re -stream_loop -1 -i file.mp4 -vcodec libx264 -f rtsp -rtsp_transport tcp rtsp://localhost:8554/mystream and see it at http://localhost:8888/mystream.

  


  But when I'm trying to do the same with python from the ffmpeg's stdin, I'm getting infinitely loading video instead of stream and browser console says "Uncaught (in promise) DOMException : The fetching process for the media resource was aborted by the user agent at the user's request". Here is my code :

  


  import random
import shlex
import subprocess
import time

import numpy as np


def main():
    width = 1024
    height = 720
    framerate = 1
    frame_duration = 1 / framerate
    cmd = shlex.split(
        f'ffmpeg'
        f' -y'
        f' -f rawvideo'
        f' -vcodec rawvideo'
        f' -s {width}x{height}'
        f' -pix_fmt bgr24'
        f' -r {framerate}'
        f' -i -'
        f' -r {framerate}'
        f' -force_key_frames expr:eq(mod(n,3),0)'
        f' -vcodec libx264'
        f' -crf 18'
        f' -preset ultrafast'
        f' -tune zerolatency'
        f' -f rtsp'
        f' -rtsp_transport tcp'
        f' rtsp://localhost:8554/mystream'
    )
    ffmpeg_process = subprocess.Popen(cmd, stdin=subprocess.PIPE)
    try:
        while True:
            image = np.full(
                (height, width, 3),
                (
                    random.randint(0, 255),
                    random.randint(0, 255),
                    random.randint(0, 255),
                ),
                dtype=np.uint8,
            )
            ffmpeg_process.stdin.write(image.tobytes())
            time.sleep(frame_duration)
    finally:
        ffmpeg_process.stdin.close()
        ffmpeg_process.wait()


if __name__ == '__main__':
    main()



  


  In the server's logs seems like no bad messages instead of single 404 status (is it just about favicon, right ?)

  


  2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] GET /mystream/
2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] [c->s] GET /mystream/ HTTP/1.1
Host: localhost:8888
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Encoding: gzip, deflate, br
Accept-Language: ru,en-US;q=0.7,en;q=0.3
Connection: keep-alive
Cookie: csrftoken=iRZDO5rsJzhh5peyyKhViN9yRslNQbuZ; Webstorm-713207de=ca4f5f1e-40e8-4bfd-97da-1be2f15f6e9e
Sec-Fetch-Dest: document
Sec-Fetch-Mode: navigate
Sec-Fetch-Site: cross-site
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0


2023/03/25 13:50:32 INF [HLS] [muxer mystream] created (requested by 172.18.0.1)
2023/03/25 13:50:32 INF [HLS] [muxer mystream] is converting into HLS, 1 track (H264)
2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] [s->c] HTTP/1.1 200 OK
Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: *
Content-Type: text/html
Server: rtsp-simple-server

(body of 1240 bytes)
2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] GET /favicon.ico
2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] [c->s] GET /favicon.ico HTTP/1.1
Host: localhost:8888
Accept: image/avif,image/webp,*/*
Accept-Encoding: gzip, deflate, br
Accept-Language: ru,en-US;q=0.7,en;q=0.3
Connection: keep-alive
Cookie: csrftoken=iRZDO5rsJzhh5peyyKhViN9yRslNQbuZ; Webstorm-713207de=ca4f5f1e-40e8-4bfd-97da-1be2f15f6e9e
Referer: http://localhost:8888/mystream/
Sec-Fetch-Dest: image
Sec-Fetch-Mode: no-cors
Sec-Fetch-Site: same-origin
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0


2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] [s->c] HTTP/1.1 404 Not Found
Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: *
Server: rtsp-simple-server


2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] GET /mystream/index.m3u8
2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] [c->s] GET /mystream/index.m3u8 HTTP/1.1
Host: localhost:8888
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: ru,en-US;q=0.7,en;q=0.3
Connection: keep-alive
Cookie: csrftoken=iRZDO5rsJzhh5peyyKhViN9yRslNQbuZ; Webstorm-713207de=ca4f5f1e-40e8-4bfd-97da-1be2f15f6e9e
Referer: http://localhost:8888/mystream/
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0


2023/03/25 13:50:32 DEB [HLS] [conn 172.18.0.1] [s->c] HTTP/1.1 200 OK
Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: *
Content-Type: application/x-mpegURL
Server: rtsp-simple-server

(body of 122 bytes)
2023/03/25 13:50:34 DEB [HLS] [conn 172.18.0.1] GET /mystream/index.m3u8
2023/03/25 13:50:34 DEB [HLS] [conn 172.18.0.1] [c->s] GET /mystream/index.m3u8 HTTP/1.1
Host: localhost:8888
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: ru,en-US;q=0.7,en;q=0.3
Connection: keep-alive
Cookie: csrftoken=iRZDO5rsJzhh5peyyKhViN9yRslNQbuZ; Webstorm-713207de=ca4f5f1e-40e8-4bfd-97da-1be2f15f6e9e
Referer: http://localhost:8888/mystream/
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0


2023/03/25 13:50:34 DEB [HLS] [conn 172.18.0.1] [s->c] HTTP/1.1 200 OK
Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: *
Content-Type: application/x-mpegURL
Server: rtsp-simple-server

(body of 122 bytes)
2023/03/25 13:50:36 DEB [HLS] [conn 172.18.0.1] GET /mystream/index.m3u8
2023/03/25 13:50:36 DEB [HLS] [conn 172.18.0.1] [c->s] GET /mystream/index.m3u8 HTTP/1.1
Host: localhost:8888
Accept: */*
Accept-Encoding: gzip, deflate, br
Accept-Language: ru,en-US;q=0.7,en;q=0.3
Connection: keep-alive
Cookie: csrftoken=iRZDO5rsJzhh5peyyKhViN9yRslNQbuZ; Webstorm-713207de=ca4f5f1e-40e8-4bfd-97da-1be2f15f6e9e
Referer: http://localhost:8888/mystream/
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/111.0


2023/03/25 13:50:36 DEB [HLS] [conn 172.18.0.1] [s->c] HTTP/1.1 200 OK
Access-Control-Allow-Credentials: true
Access-Control-Allow-Origin: *
Content-Type: application/x-mpegURL
Server: rtsp-simple-server

(body of 122 bytes)



  


  How do I get my stream from python visible on a webpage ?

  


• FFmpeg Drawtext - Fontconfig error : Cannot load default config file : No such file : (null)

  29 mars 2023, par James

  I get the message : Fontconfig error : Cannot load default config file : No such file : (null).
No output is created.

  


  I have installed FFmpeg full version and written this test script to add text onto an image which I drag and drop onto the BAT file.

  


  I searched this database for solutions and found none. The script should produce an output file test.png, The image should have red text on it which reads Hello.

  


  I tried to escape the path to the Font both ways without success :

  


  `set "FONT='c\:\\windows\\fonts\\arial.ttf'" :: Font


  


  `

  


  .. and

  


  `set "FONT='c\:\/windows\/fonts\/arial.ttf'" :: Font`


  


  My full script :

  


  `set "FONT='c\:\/windows\/fonts\/arial.ttf'" :: Font
set "TEXT=Hello" :: Text (no space characters allowed, see next example)
set "COLOR=red" :: Text color
set "SIZE=20" :: Font size
set "POS_X=(w-tw)/2" :: X position of text, use (w-tw)/2 for centering
set "POS_Y=(h-th)/2" :: Y position of text, use (h-th)/2 for centering


ffmpeg -i %1 -vf     drawtext='fontfile=%FONT%:text=%TEXT%:fontcolor=%COLOR%:fontsize=%SIZE%:x=%POS_X%:y=%POS_Y%' -  frames 1 -y test.png


pause`


  


  The complete result :
 C :\Users\canjm\Desktop\Image Correction 360\Archive
Testing\Utilities\Align Photo>set
  
"FONT='c :/windows/fonts/arial.ttf'" : : Font

  


  C:\Users\canjm\Desktop\Image Correction 360\Archive Testing\Utilities\Align Photo>set  "TEXT=Hello" :: Text (no space characters allowed, see next example)

C:\Users\canjm\Desktop\Image Correction 360\Archive Testing\Utilities\Align Photo>set "COLOR=red" :: Text color
C:\Users\canjm\Desktop\Image Correction 360\Archive Testing\Utilities\Align Photo>set "SIZE=20" :: Font size
C:\Users\canjm\Desktop\Image Correction 360\Archive Testing\Utilities\Align Photo>set "POS_X=(w-tw)/2" :: X position of text, use (w-tw)/2 for centering

C:\Users\canjm\Desktop\Image Correction 360\Archive Testing\Utilities\Align Photo>set "POS_Y=(h-th)/2" :: Y position of text, use (h-th)/2 for centering

C:\Users\canjm\Desktop\Image Correction 360\Archive Testing\Utilities\Align Photo>ffmpeg -i "C:\Users\canjm\Desktop\Image Correction 360\Archive Testing\Utilities\Align Photo\Eqr_360_9999.JPG" -vf drawtext='fontfile='c\:\/windows\/fonts\/arial.ttf':text=Hello:fontcolor=red:fontsize=20:x=(w-tw)/2:y=(h-th)/2' -frames 1 -y test.png


  


  ffmpeg version 2023-03-27-git-f7abe92bd7-full_build-
www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static
—disable-w32threads —disable-autodetect —enable-
fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —
enable-gmp —enable-bzlib —enable-lzma —enable-libsnappy —
enable-zlib —enable-librist —enable-libsrt —enable-libssh
—enable-libzmq —enable-avisynth —enable-libbluray —
enable-libcaca —enable-sdl2 —enable-libaribb24 —enable-
libdav1d —enable-libdavs2 —enable-libuavs3d —enable-
libzvbi —enable-librav1e —enable-libsvtav1 —enable-libwebp
—enable-libx264 —enable-libx265 —enable-libxavs2 —enable-
libxvid —enable-libaom —enable-libjxl —enable-libopenjpeg
—enable-libvpx —enable-mediafoundation —enable-libass —
enable-frei0r —enable-libfreetype —enable-libfribidi —
enable-liblensfun —enable-libvidstab —enable-libvmaf —
enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid
—enable-ffnvcodec —enable- nvdec —enable-nvenc —enable-
d3d11va —enable-dxva2 —enable-libvpl —enable-libshaderc —
enable-vulkan —enable-libplacebo - -enable-opencl —enable-
libcdio —enable-libgme —enable-libmodplug —enable-
libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —
enable-libshine —enable-libtheora —enable-libtwolame —
enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —
enable-libopencore-amrnb —enable-libopus —enable-libspeex -
-enable-libvorbis —enable-ladspa —enable-libbs2b —enable-
libflite —enable-libmysofa -tab —enable-libvmaf —enable-
libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —
enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-
d3d11va —enable-dxva2 —enable-libvpl —enable-libshaderc —
enable-vulkan —enable-libplacebo —enable-opencl —enable-
libcdio —enable-libgme —enable-libmodplug —enable-
libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —
enable-libshine —enable-libtheora —enable-libtwolame —
enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —
enable-libopencore-amrnb —enable-libopus —enable-libspeex -
-enable-libvorbis —enable-ladspa —enable-libbs2b —enable-
libflite —enable-libmysofa —enable-librubberband —enable-
libsoxr —enable-chromaprint libavutil 58. 5.100 / 58.
  
5.100 libavcodec 60. 7.100 / 60. 7.100 libavformat
  
60. 4.100 / 60. 4.100 libavdevice 60. 2.100 / 60.
  
2.100 libavfilter 9. 5.100 / 9. 5.100-enable-
librubberband —enable-libsoxr — enable-chromaprint
libavutil 58. 5.100 / 58. 5.100
libavcodec 60. 7.100 / 60. 7.100 Duration : 00:00:00.04,
start : 0.000000, bitrate : 95429 kb/s
Stream #0:0 : Video : mjpeg (Baseline), yuvj444p(pc,
bt470bg/unknown/unknown), 5792x2896, 25 fps, 25 tbr, 25 tbn
Stream mapping :
Stream #0:0 -> #0:0 (mjpeg (native) -> png (native))
Press [q] to stop, [?] for help
Fontconfig error : Cannot load default config file : No such
file : (null)

  


  C:\Users\canjm\Desktop\Image Correction 360\Archive 
Testing\Utilities\Align Photo>pause
Press any key to continue . . .``