[FFmpeg-user] Creating video from a lot of jpeg pictures

Paul B Mahol onemda at gmail.com
Mon Apr 11 12:42:29 EEST 2022 

On Mon, Apr 11, 2022 at 11:35 AM Balogh László <laci at blacc.hu> wrote:

> Thank,
>
> I have a backup of the framsets, so no panic. :)
>
> But then why is asking to overwrite? Why does the ffmpeg try to
> overwrite? Here the command without "-y":
>

will need to use -f image2 demuxer

Consult https://trac.ffmpeg.org/wiki/Slideshow for more info.


>
> mcll at mcllserver-i3:/home/VVCam$ ffmpeg -framerate 25 -i
> 000_Images/2022/04/2022-04-10/*.jpeg -c:v libx264 -profile:v high -crf
> 20 -pix_fmt yuv420p output.mp4
> ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg
> developers
>    built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
>    configuration: --prefix=/usr --extra-version=0ubuntu0.2
> --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
> --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
> --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
> --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
> --enable-libcdio --enable-libflite --enable-libfontconfig
> --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm
> --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
> --enable-libopenmpt --enable-libopus --enable-libpulse
> --enable-librubberband --enable-librsvg --enable-libshine
> --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
> --enable-libtheora --enable-libtwolame --enable-libvorbis
> --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265
> --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi
> --enable-omx --enable-openal --enable-opengl --enable-sdl2
> --enable-libdc1394 --enable-libdrm --enable-libiec61883
> --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264
> --enable-shared
>    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
>    libavresample   3.  7.  0 /  3.  7.  0
>    libswscale      4.  8.100 /  4.  8.100
>    libswresample   2.  9.100 /  2.  9.100
>    libpostproc    54.  7.100 / 54.  7.100
> Input #0, image2, from
> '000_Images/2022/04/2022-04-10/2022-04-10_00_00_01.jpeg':
>    Duration: 00:00:00.04, start: 0.000000, bitrate: 66148 kb/s
>      Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown),
> 2688x1520 [SAR 1:1 DAR 168:95], 25 tbr, 25 tbn, 25 tbc
> File '000_Images/2022/04/2022-04-10/2022-04-10_00_00_21.jpeg' already
> exists. Overwrite ? [y/N]
>
> Regards, Laszlo
>
>
> 2022. 04. 11. 11:26 keltezéssel, Paul B Mahol írta:
> > On Mon, Apr 11, 2022 at 11:22 AM Paul B Mahol <onemda at gmail.com> wrote:
> >
> >>
> >> On Mon, Apr 11, 2022 at 10:58 AM Balogh László <laci at blacc.hu> wrote:
> >>
> >>> Hi,
> >>>
> >>> I have about 4300 pictures in a folder
> (000_Images/2022/04/2022-04-10/).
> >>> I want to create a video from them, every picture should be one frame
> in
> >>> the video.
> >>>
> >>> I'm using the following command: ffmpeg -framerate 25 -i
> >>> 000_Images/2022/04/2022-04-10/*.jpeg -c:v libx264 -profile:v high -crf
> >>> 20 -pix_fmt yuv420p -y output.mp4
> >>>
> >>> Its starting, but after about 500 pictures ffmpeg is slowing down,
> while
> >>> the system load goes quickly up. It was hard to cancel the command, as
> >>> the load was above 80. :)
> >>>
> >>> Here some log of the command:
> >>>
> >>> mcll at mcllserver-i3:/home/VVCam$ ffmpeg -framerate 25 -i
> >>> 000_Images/2022/04/2022-04-10/*.jpeg -c:v libx264 -profile:v high -crf
> >>> 20 -pix_fmt yuv420p -y output.mp4
> >>     built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
> >>>     configuration: --prefix=/usr --extra-version=0ubuntu0.2
> >>> --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu
> >>> --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping
> >>> --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa
> >>> --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca
> >>> --enable-libcdio --enable-libflite --enable-libfontconfig
> >>> --enable-libfreetype --enable-libfribidi --enable-libgme
> --enable-libgsm
> >>> --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg
> >>> --enable-libopenmpt --enable-libopus --enable-libpulse
> >>> --enable-librubberband --enable-librsvg --enable-libshine
> >>> --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh
> >>> --enable-libtheora --enable-libtwolame --enable-libvorbis
> >>> --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265
> >>> --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi
> >>> --enable-omx --enable-openal --enable-opengl --enable-sdl2
> >>> --enable-libdc1394 --enable-libdrm --enable-libiec61883
> >>> --enable-chromaprint --enable-frei0r --enable-libopencv
> --enable-libx264
> >>> --enable-shared
> >>>     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
> >>>     libavresample   3.  7.  0 /  3.  7.  0
> >>>     libswscale      4.  8.100 /  4.  8.100
> >>>     libswresample   2.  9.100 /  2.  9.100
> >>>     libpostproc    54.  7.100 / 54.  7.100
> >>> Input #0, image2, from
> >>> '000_Images/2022/04/2022-04-10/2022-04-10_00_00_01.jpeg':
> >>>     Duration: 00:00:00.04, start: 0.000000, bitrate: 66148 kb/s
> >>>       Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown),
> >>> 2688x1520 [SAR 1:1 DAR 168:95], 25 tbr, 25 tbn, 25 tbc
> >>> Stream mapping:
> >>>     Stream #0:0 -> #0:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #1:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #2:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #3:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #4:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #5:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #6:0 (mjpeg (native) -> mjpeg (native))
> >>> ...cut...
> >>>     Stream #0:0 -> #4316:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #4317:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #4318:0 (mjpeg (native) -> mjpeg (native))
> >>>     Stream #0:0 -> #4319:0 (mjpeg (native) -> h264 (libx264))
> >>> Press [q] to stop, [?] for help
> >>> Output #0, image2, to
> >>> '000_Images/2022/04/2022-04-10/2022-04-10_00_00_21.jpeg':
> >>>     Metadata:
> >>>       encoder         : Lavf57.83.100
> >>>       Stream #0:0: Video: mjpeg, yuvj420p(pc), 2688x1520 [SAR 1:1 DAR
> >>> 168:95], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
> >>>       Metadata:
> >>>         encoder         : Lavc57.107.100 mjpeg
> >>>       Side data:
> >>>         cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay:
> -1
> >>> Output #1, image2, to
> >>> '000_Images/2022/04/2022-04-10/2022-04-10_00_00_41.jpeg':
> >>>     Metadata:
> >>>       encoder         : Lavf57.83.100
> >>>       Stream #1:0: Video: mjpeg, yuvj420p(pc), 2688x1520 [SAR 1:1 DAR
> >>> 168:95], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
> >>>       Metadata:
> >>>         encoder         : Lavc57.107.100 mjpeg
> >>>       Side data:
> >>>         cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay:
> -1
> >>> Output #2, image2, to
> >>> '000_Images/2022/04/2022-04-10/2022-04-10_00_01_01.jpeg':
> >>>     Metadata:
> >>>       encoder         : Lavf57.83.100
> >>>       Stream #2:0: Video: mjpeg, yuvj420p(pc), 2688x1520 [SAR 1:1 DAR
> >>> 168:95], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc
> >>>       Metadata:
> >>>         encoder         : Lavc57.107.100 mjpeg
> >>>       Side data:
> >>>         cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay:
> -1
> >>> ...etc...
> >>>
> >>> Why is this generating such a high load, and what should i do?
> >>>
> >>
> >> It is for some reason creating separate streams for each jpeg image.
> >>
> >> Is your ffmpeg modified or you use script?
> >>
> >> Because original ffmpeg does not do this.
> >>
> > Ignore that remark above, I forgot -y switch.
> >
> > Oops, using -y switch in your case is very dangerous.
> >
> >
> > You completely ditched all jpegs and replaced them with the first one.
> >
> > NEVER EVER USE -y SWITCH, NEVER EVER.
> >
> >
> >
> >>
> >>> Thanks
> >>>
> >>> Regards, Laszlo
> >>>
> >>>
> >>> _______________________________________________
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> >>>
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