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  • ffmpeg /dev/video1 : No space left on device

    4 avril 2017, par chaitanya kiran

    While converting and redirecting USB camera stream to a multicast ip I’m facing below error.

    ffmpeg -f v4l2 -i /dev/video1 -s 720x480 -pix_fmt yuv420p -c:v mpeg2video -aspect 4:3 -r 30 -g 15 -ar 0 -streamid 0:48 -bf 2 -b:v 100k -bufsize 400k -maxrate 3825k -f rtp_mpegts rtp ://239.0.2.2:5001

    ffmpeg version 3.2.4-static http://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2017 the FFmpeg developers
    built with gcc 5.4.1 (Debian 5.4.1-5) 20170205
    configuration : —enable-gpl —enable-version3 —enable-static —disable-debug —disable-ffplay —disable-indev=sndio —disable-outdev=sndio —cc=gcc-5 —enable-fontconfig —enable-frei0r —enable-gnutls —enable-gray —enable-libass —enable-libfreetype —enable-libfribidi —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-librtmp —enable-libsoxr —enable-libspeex —enable-libtheora —enable-libvidstab —enable-libvo-amrwbenc —enable-libvorbis —enable-libvpx —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libzimg
    libavutil 55. 34.101 / 55. 34.101
    libavcodec 57. 64.101 / 57. 64.101
    libavformat 57. 56.101 / 57. 56.101
    libavdevice 57. 1.100 / 57. 1.100
    libavfilter 6. 65.100 / 6. 65.100
    libswscale 4. 2.100 / 4. 2.100
    libswresample 2. 3.100 / 2. 3.100
    libpostproc 54. 1.100 / 54. 1.100

    [video4linux2,v4l2 @ 0xb982f80] ioctl(VIDIOC_STREAMON) : No space left on device
    /dev/video1 : No space left on device

    Below are top and free -m command outputs

    top

    top - 20:10:13 up 16 min, 4 users, load average : 0.49, 0.37, 0.28
    Tasks : 257 total, 1 running, 256 sleeping, 0 stopped, 0 zombie
    %Cpu(s) : 3.4 us, 0.2 sy, 0.0 ni, 95.9 id, 0.5 wa, 0.0 hi, 0.0 si, 0.0 st
    KiB Mem : 13457292 total, 12299768 free, 650672 used, 506852 buff/cache
    KiB Swap : 3670012 total, 3670012 free, 0 used. 12710776 avail Mem

    PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
    4095 root 20 0 333376 153296 138660 S 25.9 1.1 1:09.41 ffmpeg
    1551 root 20 0 84804 40076 17756 S 0.7 0.3 0:24.00 Xorg.bin
    2574 user 20 0 66900 27436 21268 S 0.7 0.2 0:11.30 gnome-terminal-
    4373 root 20 0 7800 3852 3196 R 0.7 0.0 0:00.03 top
    610 root 20 0 0 0 0 S 0.3 0.0 0:00.03 kworker/4:2
    3762 user 20 0 816928 217120 75100 S 0.3 1.6 0:56.34 firefox
    4240 root 20 0 0 0 0 S 0.3 0.0 0:02.24 kworker/0:2
    1 root 20 0 27464 7508 5044 S 0.0 0.1 0:01.95 systemd
    2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
    3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
    5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
    7 root 20 0 0 0 0 S 0.0 0.0 0:01.29 rcu_sched

    free -m

              total        used        free      shared  buff/cache   available

    Mem : 13141 621 12025 2 495 12426
    Swap : 3583 0 3583

    cat /proc/meminfo |grep -i vmalloc

    VmallocTotal : 524288 kB
    VmallocUsed : 204736 kB
    VmallocChunk : 316560 kB

    P.S: : There is already an instance of ffmpeg running on the machine on /dev/video0.

    Any help in resolving issue would be greatly appreciated

  • vf_colorspace : Add a pixdesc API alias name for bt2020nc color space

    9 juin 2017, par Vittorio Giovara
    vf_colorspace : Add a pixdesc API alias name for bt2020nc color space
    • [DH] libavfilter/vf_colorspace.c

  • ffmpeg dnxhd —> prores, issue with space color rec601 instead rec709

    7 juin 2017, par PascalC

    I’m encoding DNxHD file (i’m sure it’s in rec709 colorspace) in Prores with FFmpeg. When it’s done mediainfo says it’s bt601, it’s sucks !

    -i Desktop/testprores.mxf -vcodec prores -acodec pcm -color_primaries bt709 -color_trc bt709 -colorspace bt709 -profile:v 3 Desktop/OUTTest.mov

    any ideas ?
    thanks

    pascal

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