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

[Paul B Mahol]

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.


>
> Thanks
>
> Regards, Laszlo
>
>
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