[FFmpeg-user] About Decklink report error message

[charles.toya8 at gmail.com]

Hi All，
     I have a proberm with decklink , i use this command run it :
ffmpeg -f decklink -re -i "DeckLink Studio 4K at 8" -pix_fmt yuv420p -an -s 1920x1080 -b 10240k -f flv rtmp://10.0.0.82:1935/live/test -pix_fmt yuv420p -an -s 1280x720 -b 5000k -f flv rtmp://10.0.0.82:1935/live/test1

    but some minus, system response error :
  Decklink input buffer overrun!=00:02:17.36 bitrate=7574.2kbits/s    
  if i only push one rmtp address , don't found this proberm , can you help me ?

like this : 
ffmpeg -f decklink -re -i "DeckLink Studio 4K at 8" -pix_fmt yuv420p -an -s 1280x720 -f flv rtmp://10.0.0.82:1935/live/test 
is good work .
    

[root at vod ~]# ffmpeg -f decklink -re -i "DeckLink Studio 4K at 8" -pix_fmt yuv420p -an -s 1920x1080 -b 10240k -f flv rtmp://10.0.0.82:1935/live/test -pix_fmt yuv420p -an -s 1280x720 -b 5000k -f flv rtmp://10.0.0.82:1935/live/test1
ffmpeg version 2.8.5 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-16)
  configuration: --enable-decklink --extra-cflags=-I/root/BD_SDK/Linux/include/ --extra-ldflags=-ldl --extra-libs=-ldl --enable-shared --disable-static --prefix=/usr/local/ffmpeg --disable-yasm
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
[decklink @ 0x2192660] Found Decklink mode 1920 x 1080 with rate 25.00(i)
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, decklink, from 'DeckLink Studio 4K at 8':
  Duration: N/A, start: 0.000000, bitrate: 1536 kb/s
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
    Stream #0:1: Video: rawvideo (UYVY / 0x59565955), uyvy422, 1920x1080, -4 kb/s, 25 tbr, 1000k tbn, 25 tbc
Please use -b:a or -b:v, -b is ambiguous
    Last message repeated 1 times
[flv @ 0x219a5e0] removing common factors from framerate
[flv @ 0x21ab520] removing common factors from framerate
Output #0, flv, to 'rtmp://10.0.0.82:1935/live/test':
  Metadata:
    encoder         : Lavf56.40.101
    Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 1920x1080, q=2-31, 10240 kb/s, 25 fps, 1k tbn, 25 tbc
    Metadata:
      encoder         : Lavc56.60.100 flv
Output #1, flv, to 'rtmp://10.0.0.82:1935/live/test1':
  Metadata:
    encoder         : Lavf56.40.101
    Stream #1:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 1280x720, q=2-31, 5000 kb/s, 25 fps, 1k tbn, 25 tbc
    Metadata:
      encoder         : Lavc56.60.100 flv
Stream mapping:
  Stream #0:1 -> #0:0 (rawvideo (native) -> flv1 (flv))
  Stream #0:1 -> #1:0 (rawvideo (native) -> flv1 (flv))
Press [q] to stop, [?] for help
frame=  550 fps= 22 q=2.0 Lq=2.0 size=   20857kB time=00:00:22.00 bitrate=7766.2kbits/s    

[decklink @ 0xfe6660] Decklink input buffer overrun!=00:02:17.36 bitrate=7574.2kbits/s    
    Last message repeated 13 times
[decklink @ 0xfe6660] Decklink input buffer overrun!=00:02:17.88 bitrate=7572.2kbits/s    
    Last message repeated 15 times
[decklink @ 0xfe6660] Decklink input buffer overrun!=00:02:18.44 bitrate=7568.4kbits/s    
    Last message repeated 13 times
[decklink @ 0xfe6660] Decklink input buffer overrun!=00:02:18.96 bitrate=7566.4kbits/s    
    Last message repeated 13 times
[decklink @ 0xfe6660] Decklink input buffer overrun!=00:02:19.52 bitrate=7562.3kbits/s    
    Last message repeated 15 times
[decklink @ 0xfe6660] Decklink input buffer overrun!=00:02:20.04 bitrate=7560.3kbits/s 



charles.toya8 at gmail.com