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• ffmpeg -f segment fails after 30 minutes

  8 mars 2018, par Musashi Sakamoto

  When I used command below to convert video stream received from named pipe into .ts file which is HLS formatted,

  sudo ffmpeg -i named_pipe.mkv \
  
  -c:v libx264 -r 10 -g 30 -map 0  \
  
  -qmin 18 -qmax 30 \
  
  -f segment -segment_format mpegts -segment_time 3 \
  
  -segment_list list.m3u8 \
  
  -segment_list_type hls\
  
  -segment_list_size 20 -strftime 1 \
  
  %Y-%m-%d_%Hh%Mm%Ss.ts

  It stops working with the speed gradually going down after about 30 minutes.
  Here is the log right before it stopped working.

  *** dropping frame 2461 from stream 0 at ts -11787
  
  [h264 @ 0x5639c4f49440] nal_unit_type: 1, nal_ref_idc: 1
  
  *** dropping frame 2461 from stream 0 at ts -11787
  
  [h264 @ 0x5639c4fde520] nal_unit_type: 1, nal_ref_idc: 1
  
  *** dropping frame 2461 from stream 0 at ts -11787
  
  [h264 @ 0x5639c4ffa4a0] nal_unit_type: 1, nal_ref_idc: 1
  
  *** dropping frame 2461 from stream 0 at ts -11786
  
  [h264 @ 0x5639c5016420] nal_unit_type: 1, nal_ref_idc: 1
  
  *** dropping frame 2461 from stream 0 at ts -11786
  
  [h264 @ 0x5639c50323a0] nal_unit_type: 1, nal_ref_idc: 1
  
  *** dropping frame 2461 from stream 0 at ts -11786
  
  [h264 @ 0x5639c504e320] nal_unit_type: 1, nal_ref_idc: 1
  
  *** dropping frame 2461 from stream 0 at ts -11785
  
  [h264 @ 0x5639c4c46e20] nal_unit_type: 1, nal_ref_idc: 1
  
  *** dropping frame 2461 from stream 0 at ts -11785
  
  *** dropping frame 2461 from stream 0 at ts -11785
  
  *** dropping frame 2461 from stream 0 at ts -11784
  
  *** dropping frame 2461 from stream 0 at ts -11784
  
  *** dropping frame 2461 from stream 0 at ts -11784
  
  *** dropping frame 2461 from stream 0 at ts -11783
  
  *** dropping frame 2461 from stream 0 at ts -11783
  
  *** dropping frame 2461 from stream 0 at ts -11783
  
  *** dropping frame 2461 from stream 0 at ts -11782
  
  *** dropping frame 2461 from stream 0 at ts -11782
  
  *** dropping frame 2461 from stream 0 at ts -11782
  
  *** dropping frame 2461 from stream 0 at ts -11781
  
  *** dropping frame 2461 from stream 0 at ts -11781
  
  *** dropping frame 2461 from stream 0 at ts -11781
  
  *** dropping frame 2461 from stream 0 at ts -11780
  
  *** dropping frame 2461 from stream 0 at ts -11780
  
  [out_0_0 @ 0x5639c4b58b40] EOF on sink link out_0_0:default.
  
  *** dropping frame 2461 from stream 0 at ts -11780
  
  No more output streams to write to, finishing.
  
  [segment @ 0x5639c4b4ab20] stream:0 start_pts_time:243 pts:22131000 pts_time:245.9 dts:22131000 dts_time:245.9 -> pts:22131000 pts_time:245.9 dts:22131000 dts_time:245.9
  
  [segment @ 0x5639c4b4ab20] Opening '/var/www/html/hls/list.m3u8.tmp' for writing
  
  [file @ 0x5639c6510be0] Setting default whitelist 'file,crypto'
  
  [segment @ 0x5639c4b4ab20] EXT-X-MEDIA-SEQUENCE:62
  
  [AVIOContext @ 0x5639c4f01f80] Statistics: 0 seeks, 1 writeouts
  
  [segment @ 0x5639c4b4ab20] segment:'/var/www/html/hls/2018-03-06_15h59m25s.ts' count:81 ended
  
  [AVIOContext @ 0x5639c4d1cca0] Statistics: 0 seeks, 1 writeouts
  
  [segment @ 0x5639c4b4ab20] Opening '/var/www/html/hls/2018-03-06_16h18m11s.ts' for writing
  
  [file @ 0x5639c4b8da80] Setting default whitelist 'file,crypto'

• FFMpeg Split MP4 Clip Without Re-Encode | Out of Sync

  28 février 2018, par sword1st

  I want to split mp4 clip for certain seconds but i don’t want to re-encode cuz my cpu isn’t so good it’s take so much time. When i try this code with encode :

  ffmpeg -i clip.mp4 -ss 00:00:25 -to 00:01:20 cutted.mp4

  it’s working perfectly but i don’t want to re-encode. So i try this code :

  ffmpeg -i clip.mp4 -ss 00:00:25 -to 00:01:20 -c copy cutted.mp4

  it’s playing perfectly in media player with a couple blank seconds at first it’s no problem i can cut these blank seconds when i editing it. But real problem is i can’t edit that clip in premiere pro cuz it’s out of sync. What can i do for fix it ? Any ffmpeg feature for that ? Thanks for all help !

  Here ffmpeg output :

  C:\Users\winuser>ffmpeg -i "D:\clips\clip_4579\clip.mp4" -ss 00:03
  
  :00 -to 00:03:30 -c copy "D:\clips\clip_4579\renderless1.mp4"
  
  ffmpeg version N-90155-g28924f4b48 Copyright (c) 2000-2018 the FFmpeg developers
  
  
  
    built with gcc 7.3.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --e
  
  nable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libblur
  
  ay --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-
  
  libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enab
  
  le-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-li
  
  bvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --en
  
  able-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-
  
  libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enabl
  
  e-libspeex --enable-libxvid --enable-libmfx --enable-amf --enable-cuda --enable-
  
  cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth
  
    libavutil      56.  7.101 / 56.  7.101
  
    libavcodec     58. 12.102 / 58. 12.102
  
    libavformat    58.  9.100 / 58.  9.100
  
    libavdevice    58.  2.100 / 58.  2.100
  
    libavfilter     7. 12.100 /  7. 12.100
  
    libswscale      5.  0.101 /  5.  0.101
  
    libswresample   3.  0.101 /  3.  0.101
  
    libpostproc    55.  0.100 / 55.  0.100
  
  Input #0, mpegts, from 'D:\clips\clip_4579\clip.mp4':
  
    Duration: 00:04:14.78, start: 14149.499000, bitrate: 2287 kb/s
  
    Program 1
  
      Stream #0:0[0x100]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, ster
  
  eo, fltp, 164 kb/s
  
      Stream #0:1[0x101]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(pro
  
  gressive), 1280x720, 60 tbr, 90k tbn, 2k tbc
  
      Stream #0:2[0x102]: Data: timed_id3 (ID3  / 0x20334449)
  
  Output #0, mp4, to 'D:\clips\clip_4579\renderless1.mp4':
  
    Metadata:
  
      encoder         : Lavf58.9.100
  
      Stream #0:0: Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1
  
  280x720, q=2-31, 60 tbr, 90k tbn, 90k tbc
  
      Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 16
  
  4 kb/s
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (copy)
  
    Stream #0:0 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=    0 fps=0.0 q=-1.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=
  
  frame=    0 fps=0.0 q=-1.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=
  
  frame=    0 fps=0.0 q=-1.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=
  
  frame=  551 fps=271 q=-1.0 size=    4864kB time=00:00:21.23 bitrate=1876.7kbits/
  
  frame=  814 fps=380 q=-1.0 Lsize=    7381kB time=00:00:29.98 bitrate=2016.4kbits
  
  /s speed=  14x
  
  video:6757kB audio:594kB subtitle:0kB other streams:0kB global headers:0kB muxin
  
  g overhead: 0.400338%

• HLS files(.m3u8, .ts) does not created on nginx_rtmp_module

  6 mars 2018, par sujoyu

  I want to treanscode RTSP to RTMP to HLS using ffmpeg and nginx_rtmp_module.

  But HLS files(.m3u8, .ts) do not created.

  I’m testing on Docker(amazonlinux image).

  I can access and play rtmp://localhost:1935/live/camera1 by VLC Player, but can not access http://localhost:8088/live/camera1.m3u8.

  docker run command :

  docker run -it -p 8088:8088 -p 1935:1935 -v $(pwd):/tmp/share amazonlinux bash

  nginx.conf :

  user root;
  
  worker_processes  1;
  
  error_log  /var/log/nginx/error.log debug;
  
  
  
  events {
  
    worker_connections  1024;
  
  }
  
  
  
  rtmp {
  
    server {
  
      listen 1935;
  
      access_log  /var/log/nginx/rtmp_access.log;
  
      application live {
  
        live on;
  
        hls on;
  
        hls_path /usr/local/nginx/html/hls;
  
        hls_fragment 5s;
  
        hls_type live;
  
        hls_nested on;
  
      }
  
    }
  
  }
  
  
  
  http {
  
    server {
  
      listen      8088;
  
  
  
      location / {
  
        root /usr/local/nginx/html/;
  
      }
  
  
  
      location /hls {
  
        types {
  
          application/vnd.apple.mpegurl m3u8;
  
          video/mp2t ts;
  
          text/html html;
  
        }
  
  
  
        alias /usr/local/nginx/html/hls;
  
      }
  
    }
  
  }

  ffmpeg command : (using sample video rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov)

  nohup /root/ffmpeg_sources/ffmpeg/ffmpeg -i "rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov" -f flv -s 320x240 -an "rtmp://localhost:1935/live/camera1" null &

  ffmpeg version :

  bash-4.2# /root/ffmpeg_sources/ffmpeg/ffmpeg -version
  
  ffmpeg version N-90214-gdd3f1e3 Copyright (c) 2000-2018 the FFmpeg developers
  
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-11)
  
  configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --extra-libs=-lpthread --extra-libs=-lm --bindir=/root/bin --enable-gpl --enable-libx264 --enable-nonfree
  
  libavutil      56.  8.100 / 56.  8.100
  
  libavcodec     58. 13.102 / 58. 13.102
  
  libavformat    58. 10.100 / 58. 10.100
  
  libavdevice    58.  2.100 / 58.  2.100
  
  libavfilter     7. 12.100 /  7. 12.100
  
  libswscale      5.  0.102 /  5.  0.102
  
  libswresample   3.  0.101 /  3.  0.101
  
  libpostproc    55.  0.100 / 55.  0.100

  nginx version : nginx version: nginx/1.13.9

  nginx_rtmp_module version : nginx-rtmp-module-1.2.1

  and directory permission :

  bash-4.2# pwd
  
  /usr/local/nginx/html
  
  bash-4.2# ls -l
  
  total 48
  
  -rw-r--r-- 1 root root   537 Mar  5 07:24 50x.html
  
  drwxrwxrwx 2 root root  4096 Mar  6 04:46 hls
  
  -rw-r--r-- 1 root root   612 Mar  5 07:24 index.html
  
  -rw------- 1 root root 36262 Mar  6 04:46 nohup.out

  Help...