Recherche avancée

Sur d’autres sites (11883)

• FFServer Timeshift Tee Muxer Output

  9 septembre 2017, par Aaron

  When feeding into ffserver from ffmpeg using the tee muxer, clients connecting with the ?date=HH:MM:SS option aren’t being properly timeshifted, they just get the live stream. My best guess is that timestamps aren’t being applied correctly to the incoming feed.

  Here’s the ffmpeg command I’m using with the tee muxer :

  $ ffmpeg -v 32 -threads 1 -f mpegts -analyzeduration 2000000 \
  
           -i "http://192.168.1.175:5004/auto/v4.1?duration=600" \
  
           -flags +global_header -f tee -map 0:v -map 0:a \
  
           -c:a aac -c:v h264 -preset veryfast \
  
           -b:v 3000k -bufsize 24000k -minrate 2400k -maxrate 3000k \ 
  
           "[select=\'v:0,a:0:1\']/Users/aaron/Movies/test.mp4|[select=\'v:0,a:0\']http://localhost:1234/feed.ffm"

  Here’s the contents of my ffserver configuration :

  HTTPPort 1234
  
  HTTPBindAddress 0.0.0.0
  
  MaxClients 5
  
  CustomLog ffserver.log
  
  MaxBandwidth 50000
  
  
  
  <feed>
  
  File feed.ffm
  
  FileMaxSize 16384M
  
  ACL allow localhost
  
  </feed>
  
  
  
  <stream>
  
  Feed feed.ffm
  
  Format mpegts
  
  AudioCodec aac
  
  AudioBitRate 128
  
  AudioChannels 2
  
  AudioSampleRate 44100
  
  AVOptionAudio flags +global_header
  
  
  
  VideoCodec libx264
  
  AVOptionVideo preset veryfast
  
  VideoBitRate 3000
  
  VideoFrameRate 30
  
  VideoBufferSize 24000
  
  VideoSize hd1080
  
  AVOptionVideo flags +global_header
  
  </stream>

  The transcode, mp4 output, and stream all work, the only problem is the lack of timeshifting.

  Removing the tee muxer and just doing the feed to ffserver fixes the timeshifting. With this command :

  ffmpeg -v 32 -threads 1 -f mpegts -analyzeduration 2000000 \
  
         -i "http://192.168.1.175:5004/auto/v4.1?duration=600"  \
  
         -f ffm -map 0:v -map 0:a -c:a aac -c:v h264 -preset veryfast \
  
         -b:v 3000k -bufsize 24000k -minrate 2400k -maxrate 3000k \
  
         http://localhost:1234/feed.ffm

• Jellyfin ffmpeg permission denied

  11 septembre 2022, par Steve

  I am running Jellyfin on a Raspberry Pi 4 in a docker container (https://hub.docker.com/r/linuxserver/jellyfin) and am trying to set up hardware accelerated video transcoding. I'm fairly certain I have set up the video devices & permissions correctly, but I am getting the following exception in the logs when trying to play a video through the web interface :

  


  


  


  /usr/lib/jellyfin-ffmpeg/ffmpeg -analyzeduration 200M -autorotate 0 -i file:"/data/tvshows/Ed, Edd n' Eddy/Season 1 (1999)/Ed, Edd n Eddy - S01 E01-E02 - The Ed-Touchables and Nagged to Ed (1080p - HMax Web-DL).mp4" -map_metadata -1 -map_chapters -1 -threads 0 -map 0:0 -map 0:1 -map -0:s -codec:v:0 h264_v4l2m2m -b:v 2616000 -maxrate 2616000 -bufsize 5232000 -level 41 -force_key_frames:0 "expr:gte(t,0+n_forced*3)" -g:v:0 90 -keyint_min:v:0 90 -vf "setparams=color_primaries=bt709:color_trc=bt709:colorspace=bt709,scale=trunc(min(max(iw\,ih*a)\,1280)/64)*64:trunc(ow/a/2)*2,format=yuv420p" -codec:a:0 libfdk_aac -ac 2 -ab 384000 -copyts -avoid_negative_ts disabled -max_muxing_queue_size 2048 -f hls -max_delay 5000000 -hls_time 3 -hls_segment_type mpegts -start_number 0 -hls_segment_filename "/config/data/transcodes/575d44f8f0e15b3bc459c5289dfcdf9b%d.ts" -hls_playlist_type vod -hls_list_size 0 -y "/config/data/transcodes/575d44f8f0e15b3bc459c5289dfcdf9b.m3u8"


ffmpeg version 5.1.1-Jellyfin Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: --prefix=/usr/lib/jellyfin-ffmpeg --target-os=linux --extra-libs=-lfftw3f --extra-version=Jellyfin --disable-doc --disable-ffplay --disable-ptx-compression --disable-shared --disable-libxcb --disable-sdl2 --disable-xlib --enable-lto --enable-gpl --enable-version3 --enable-static --enable-gmp --enable-gnutls --enable-chromaprint --enable-libdrm --enable-libass --enable-libfreetype --enable-libfribidi --enable-libfontconfig --enable-libbluray --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libdav1d --enable-libwebp --enable-libvpx --enable-libx264 --enable-libx265 --enable-libzvbi --enable-libzimg --enable-libfdk-aac --toolchain=hardened --enable-cross-compile --arch=arm64 --cross-prefix=/usr/bin/aarch64-linux-gnu-
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
file:/data/tvshows/Ed, Edd n' Eddy/Season 1 (1999)/Ed, Edd n Eddy - S01 E01-E02 - The Ed-Touchables and Nagged to Ed (1080p - HMax Web-DL).mp4: Permission denied

  


  


  



  The real head-scratcher is that if I log in to the docker container with docker exec -it  /bin/bash and paste the ffmpeg command from the logs and run it, it works fine.

  


  I'm running as the jellyfin user, which is in the video group, and has read/write access to the media directory.

  


  Any thoughts ?

  


  My docker-compose file is attached below, if any other system information is needed let me know.

  


  


  


  ---
version: "2.1"
services:
  jellyfin:
    image: lscr.io/linuxserver/jellyfin:latest
    container_name: jellyfin
    environment:
      - PUID=1002
      - PGID=1002
      - TZ=America/Chicago
      - JELLYFIN_PublishedServerUrl=nas-server.local #optional
    volumes:
      - /mnt/raid/tv:/data/tvshows
      - /mnt/raid/movies:/data/movies
      - /mnt/raid/docker/linuxserver/jellyfin/config:/config
    ports:
      - 8096:8096
      - 8920:8920 #optional
      - 7359:7359/udp #optional
      - 1900:1900/udp #optional
    devices:
      - /dev/video10:/dev/video10
      - /dev/video11:/dev/video11
      - /dev/video12:/dev/video12
      - /dev/video13:/dev/video13
      - /dev/video14:/dev/video14
      - /dev/video15:/dev/video15
      - /dev/video16:/dev/video16
      - /dev/video18:/dev/video18
      - /dev/video19:/dev/video19
      - /dev/video20:/dev/video20
      - /dev/video21:/dev/video21
      - /dev/video22:/dev/video22
      - /dev/video23:/dev/video23
      - /dev/video31:/dev/video31
    restart: unless-stopped

  


  


  



• Fast movie creation using MATLAB and ffmpeg

  24 février 2018, par hyiltiz

  I have some time series data that I would like to create into movies. The data could be 2D (about 500x10000) or 3D (500x500x10000). For 2D data, the movie frames are simply line plot using plot, and for 3D data, we can use surf, imagesc, contour etc. Then we create a video file using these frames in MATLAB, then compress the video file using ffmpeg.

  To do it fast, one would try not to render all the images to display, nor save the data to disk then read it back again during the process. Usually, one would use getframe or VideoWriter to create movie in MATLAB, but they seem to easily get tricky if one tries not to display the figures to screen. Some even suggest plotting in hidden figures, then saving them as images to disk as .png files, then compress them using ffmpeg (e.g. with x265 encoder into .mp4). However, saving the output of imagesc in my iMac took 3.5s the first time, then 0.5s after. I also find it not fast enough to save so many files to disk only to ask ffmpeg to read them again. One could hardcopy the data as this suggests, but I am not sure whether it works regardless of the plotting method (e.g. plot, surf etc.), and how one would transfer data over to ffmpeg with minimal disk access.

  This is similiar to this, but immovie is too slow. This post 3 is similar, but advocates writing images to disk then reading them (slow IO).