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• ffmpeg says "No JPEG data found in image" when reading image paths from Linux pipe

  18 septembre 2021, par user16945608

  I'm trying to convert a set of pictures into a video, and I want to read the file paths of the pictures from the pipe. The command I would like to run looks like this :

  


  find dir/*.JPG | sort | ffmpeg -f image2pipe -r 1 -vcodec mjpeg -s 6000x4000 -pix_fmt yuvj422p -i - -vcodec libx264 -s 1080x720 -r 20 -pix_fmt yuv420p out.mkv

  


  But I keep obtaining the No JPEG data found in image error. Here is the full log :

  


  Input #0, image2pipe, from 'pipe:':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: mjpeg, yuvj422p(bt470bg/unknown/unknown), 6000x4000, 1 fps, 1 tbr, 1 tbn, 1 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264))
[mjpeg @ 0x558e98cd7300] No JPEG data found in image
Error while decoding stream #0:0: Invalid data found when processing input
[swscaler @ 0x558e98ce9440] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0x558e98cdaac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 0x558e98cdaac0] profile High, level 3.1, 4:2:0, 8-bit
[libx264 @ 0x558e98cdaac0] 264 - core 161 r3039 544c61f - H.264/MPEG-4 AVC codec - Copyleft
2003-2021 - 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=6 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=20 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, matroska, to 'out.mkv':
  Metadata:
    encoder         : Lavf58.76.100
  Stream #0:0: Video: h264 (H264 / 0x34363248), yuv420p, 1080x720, q=2-31, 20 fps, 1k tbn
    Metadata:
      encoder         : Lavc58.134.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=    0 fps=0.0 q=0.0 Lsize=       1kB time=00:00:00.00 bitrate=N/A speed=   0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!


  


  The pictures are in the following format (with mediainfo) and the filenames are in the form DSC_1234.JPG :

  


  Format                                   : JPEG
Video
Format                                   : JPEG
Width                                    : 6 000 pixels
Height                                   : 4 000 pixels
Display aspect ratio                     : 3:2
Color space                              : YUV
Chroma subsampling                       : 4:2:2
Bit depth                                : 8 bits
Compression mode                         : Lossy


  


  Also, I would like to avoid using a solution without piping the paths (with -f image2 -i DSC_%04d.JPG for example). Do you have any idea what's happening ?

  


• FFmpeg giving a wierd "Permission denied" error (Digitalocean VPS Ubuntu 18.04)

  10 mai 2021, par DJ Danny

  I've set up a VPS server on Digitalocean. Installed Ubuntu 18.04, LAMP, etc.
Finally, I installed ffmpeg. It is working fine from terminal but when I try to execute it through php it gives a weird "Permission denied" error :

  


  Here is some information :

  
root@vl :/# whereis ffmpeg
  
ffmpeg : /usr/local/bin/ffmpeg
  
root@vl :/# whereis ffprobe
  
ffprobe : /usr/local/bin/ffprobe
  

  


  root@vl :/# ffmpeg -version
  
ffmpeg version N-102461-g8649f5dca6 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1 18.04)
configuration : —prefix=/usr/local/ffmpeg_build —pkg-config-flags=—static —extra-cflags=-I/usr/local/ffmpeg_build/include —extra-ldflags=-L/usr/local/ffmpeg_build/lib —extra-libs='-lpthread -lm' —ld=g++ —bindir=/usr/local/bin —enable-gpl —enable-gnutls —enable-libaom —enable-libass —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libsvtav1 —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libx265 —enable-nonfree
libavutil 57. 0.100 / 57. 0.100
libavcodec 59. 1.100 / 59. 1.100
libavformat 59. 0.101 / 59. 0.101
libavdevice 59. 0.100 / 59. 0.100
libavfilter 8. 0.101 / 8. 0.101
libswscale 6. 0.100 / 6. 0.100
libswresample 4. 0.100 / 4. 0.100
libpostproc 56. 0.100 / 56. 0.100


  


  My php file :
  

  

echo shell_exec("ffmpeg -i mj.gif -profile:v baseline -pix_fmt yuv420p -vf scale=600 :-2 output.mp4 2>&1")
  
 ?>

  


  The ERROR ! :
  
ffmpeg version N-102461-g8649f5dca6 Copyright (c) 2000-2021 the FFmpeg developers built with gcc 7 (Ubuntu 7.5.0-3ubuntu1 18.04) configuration : —prefix=/usr/local/ffmpeg_build —pkg-config-flags=—static —extra-cflags=-I/usr/local/ffmpeg_build/include —extra-ldflags=-L/usr/local/ffmpeg_build/lib —extra-libs='-lpthread -lm' —ld=g++ —bindir=/usr/local/bin —enable-gpl —enable-gnutls —enable-libaom —enable-libass —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libsvtav1 —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libx265 —enable-nonfree libavutil 57. 0.100 / 57. 0.100 libavcodec 59. 1.100 / 59. 1.100 libavformat 59. 0.101 / 59. 0.101 libavdevice 59. 0.100 / 59. 0.100 libavfilter 8. 0.101 / 8. 0.101 libswscale 6. 0.100 / 6. 0.100 libswresample 4. 0.100 / 4. 0.100 libpostproc 56. 0.100 / 56. 0.100 Input #0, gif, from 'mj.gif' : Duration : 00:00:01.60, start : 0.000000, bitrate : 22863 kb/s Stream #0:0 : Video : gif, bgra, 1400x1050, 10 fps, 10 tbr, 100 tbn output.mp4 : Permission denied


  
From the past 24 hours I've tried installing ffmpeg in different ways (compiling & apt install), I've also tried changing the permission but still I'm stuck with this error.
  
Any help would be highly appreciated !
  
Thanks

  


• What could be the cause of these http-livestream artefacts in google chrome ?

  21 avril 2021, par NGauthier

  Here is the http-livestream setup : The server is running ffmpeg with the DASH protocol and h264 encoding. The client is using Dash.js. Resolution is fixed to 1920x1080, with 24 bit depth, and 60hz.

  


  The artefacting (image below) is only present when the last row of the video is within chrome viewport (so it disapears if the page is scrolled up). It manifests itself as stretching of the center row of pixels downwards, and appears to only affect some color channels.

  


  I have attempted changing the bitrate, and cutting the last row from the source, thinking the issue could be on the server side, without any impact. The fact that the issue depends on the position in the viewport makes me suspect a glitch in chrome itself.

  


  I have also attempted to force hardware decoding off in chrome :\flags and it does not solve the issue.

  


  Please submit your hypothesis on what could be the cause of this issue. Thanks.

  


  

  


  ---

  


  Update #1

  


  Here is the ffmpeg command line and logs :

  


  export DISPLAY=:0 && ffmpeg -f x11grab -framerate 60 -video_size 1920x1080 -i :0.0+0,0 -draw_mouse 0 -f dash -utc_timing_url https://time.akamai.com/?iso -streaming 1 -seg_duration 2 -frag_duration 0.033 -fflags nobuffer -fflags flush_packets -c:v h264 -preset ultrafast data/stream.mpd


  


  And the logs :

  


  ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
[x11grab @ 0x561ca34b9980] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, x11grab, from ':0.0+0,0':
  Duration: N/A, start: 1618941693.853256, bitrate: N/A
    Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1920x1080, 60 fps, 1000k tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x561ca34c5300] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2 AVX512
[libx264 @ 0x561ca34c5300] profile High 4:4:4 Predictive, level 4.2, 4:4:4 8-bit
[libx264 @ 0x561ca34c5300] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=6 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
[dash @ 0x561ca34c3740] No bit rate set for stream 0
[dash @ 0x561ca34c3740] Opening 'data/init-stream0.m4s' for writing
Output #0, dash, to 'data/stream.mpd':
  Metadata:
    encoder         : Lavf58.29.100
    Stream #0:0: Video: h264 (libx264), yuv444p, 1920x1080, q=-1--1, 60 fps, 15360 tbn, 60 tbc
    Metadata:
      encoder         : Lavc58.54.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
[dash @ 0x561ca34c3740] Opening 'data/chunk-stream0-00001.m4s.tmp' for writing
frame=   34 fps=0.0 q=15.0 size=N/A time=00:00:00.43 bitrate=N/A dup=5 drop=0 speed=0.836x    
frame=   65 fps= 64 q=15.0 size=N/A time=00:00:00.95 bitrate=N/A dup=5 drop=0 speed=0.929x    
frame=   96 fps= 62 q=15.0 size=N/A time=00:00:01.46 bitrate=N/A dup=5 drop=2 speed=0.955x    
frame=  126 fps= 62 q=15.0 size=N/A time=00:00:01.96 bitrate=N/A dup=5 drop=3 speed=0.962x    
frame=  157 fps= 62 q=15.0 size=N/A time=00:00:02.48 bitrate=N/A dup=5 drop=3 speed=0.973x    
frame=  188 fps= 61 q=15.0 size=N/A time=00:00:03.00 bitrate=N/A dup=5 drop=3 speed=0.98x    
frame=  217 fps= 61 q=15.0 size=N/A time=00:00:03.48 bitrate=N/A dup=5 drop=3 speed=0.977x    
frame=  247 fps= 61 q=15.0 size=N/A time=00:00:03.98 bitrate=N/A dup=6 drop=3 speed=0.976x    
[dash @ 0x561ca34c3740] Opening 'data/stream.mpd.tmp' for writing
[dash @ 0x561ca34c3740] Opening 'data/chunk-stream0-00002.m4s.tmp' for writing
frame=  279 fps= 61 q=15.0 size=N/A t