[FFmpeg-user] Output image sequence duplicate first image

Mon Apr 20 17:28:05 EEST 2020

Hi you lovely people,

I am trying to output a sequence of jpeg images from a video file. The command does indeed output a sequence of images, but the first and second are always duplicates, while the rest run in sequence until the maximum is reached or the file runs out.
I am not sure what I have done wrong. I thought I have asked for -r 10/60 so 10 a minute regardless of frame rate.

Any ideas how to stop the duplicate being created?
Thanks in advance

Here is my full terminal…

/usr/src/app # ffmpeg -y -i /data/vod-storage-dev/source/testfile.mxf -r 20/60 -s 283x159 -frames:v 10 -pix_fmt yuvj420p -c:v mjpeg  /data/vod-storage-dev/temp_out/1cq8tq69tkumv1es0zxeb0ty4qa_%03d.jpeg
ffmpeg version 4.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 6.4.0 (Alpine 6.4.0)
  configuration: --disable-debug --disable-doc --disable-ffplay --enable-shared --enable-avresample --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-gpl --enable-libass --enable-libfreetype --enable-libvidstab --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxvid --enable-libx264 --enable-nonfree --enable-openssl --enable-libfdk_aac --enable-libkvazaar --enable-libaom --extra-libs=-lpthread --enable-postproc --enable-small --enable-version3 --extra-cflags=-I/opt/ffmpeg/include --extra-ldflags=-L/opt/ffmpeg/lib --extra-libs=-ldl --prefix=/opt/ffmpeg
  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
Guessed Channel Layout for Input Stream #0.1 : mono
Guessed Channel Layout for Input Stream #0.2 : mono
Guessed Channel Layout for Input Stream #0.3 : mono
Guessed Channel Layout for Input Stream #0.4 : mono
Guessed Channel Layout for Input Stream #0.5 : mono
Guessed Channel Layout for Input Stream #0.6 : mono
Guessed Channel Layout for Input Stream #0.7 : mono
Guessed Channel Layout for Input Stream #0.8 : mono
Input #0, mxf, from '/data/vod-storage-dev/source/testfile.mxf':
  Metadata:
    operational_pattern_ul: 060e2b34.04010101.0d010201.01010900
    uid             : adab4424-2f25-4dc7-92ff-29bd000c0000
    generation_uid  : adab4424-2f25-4dc7-92ff-29bd000c0001
    company_name    : FFmpeg
    product_name    : OP1a Muxer
    product_version : 58.12.100
    product_uid     : adab4424-2f25-4dc7-92ff-29bd000c0002
    material_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2400
    timecode        : 00:00:00:00
  Duration: 00:00:38.44, start: 0.000000, bitrate: 59978 kb/s
    Stream #0:0: Video: mpeg2video, yuv422p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], 50000 kb/s, 25 fps, 25 tbr, 25 tbn, 50 tbc
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
    Stream #0:1: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
    Stream #0:2: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
    Stream #0:3: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
    Stream #0:4: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
    Stream #0:5: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
    Stream #0:6: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
    Stream #0:7: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
    Stream #0:8: Audio: pcm_s24le, 48000 Hz, mono, s32 (24 bit), 1152 kb/s
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
Stream mapping:
  Stream #0:0 -> #0:0 (mpeg2video (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[swscaler @ 0x5573b7c37180] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to '/data/vod-storage-dev/temp_out/1cq8tq69tkumv1es0zxeb0ty4qa_%03d.jpeg':
  Metadata:
    operational_pattern_ul: 060e2b34.04010101.0d010201.01010900
    uid             : adab4424-2f25-4dc7-92ff-29bd000c0000
    generation_uid  : adab4424-2f25-4dc7-92ff-29bd000c0001
    company_name    : FFmpeg
    product_name    : OP1a Muxer
    product_version : 58.12.100
    product_uid     : adab4424-2f25-4dc7-92ff-29bd000c0002
    material_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2400
    timecode        : 00:00:00:00
    encoder         : Lavf58.29.100
    Stream #0:0: Video: mjpeg, yuvj420p(pc), 283x159 [SAR 848:849 DAR 16:9], q=2-31, 200 kb/s, 0.33 fps, 0.33 tbn, 0.33 tbc
    Metadata:
      file_package_umid: 0x060A2B340101010501010D001324CF5D529471346A24CF5D00529471346A2401
      encoder         : Lavc58.54.100 mjpeg
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
frame=   10 fps=3.0 q=1.6 Lsize=N/A time=00:00:30.00 bitrate=N/A dup=0 drop=583 speed= 8.9x    
video:51kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown