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• Batch Encode video with command line using x264, neroAacEnc& mkvmerge [closed]

  10 octobre 2015, par Key

  I have 200+ videos in a folder, which i need to encode with a profile setting i have in MeGUI. I tried this profile setting using this command line and it works fine for only video.

  "D:\Encoders\Megui\tools\x264\x264.exe" --preset veryslow --tune animation --crf 22.0 --deblock 2:1 --min-keyint 1 --bframes 8 --qpmin 10 --qpmax 51 --aq-mode 2 --nr 500 --non-deterministic --output "Output-01.mkv" "Input-01.mkv"

  Well, it only encodes video and one file at a time.

  Is there batch script to run in a folder for x264 to encode videos, neroAacEnc audios and mkvmerge join the files together. I have ffmpeg installed but i’m not sure if this profile setting will work with ffmpeg.

  If it’s not possible with a single batch file. Then alternatively i’m thinking x264 to encode all videos in a new output folder. neroAacEnc to encode audios in that same output folder and then another command for mkvmerge to join videos and audios.

• FFMpeg with libstagefright for hardware encoding jpeg images to mp4 on Android

  16 septembre 2015, par HashG

  I have compiled FFMpeg with libstagefright for Android. I know this can be used for hardware decoding but I would like to use it for hardware encoding a stream of jpeg images to mp4 video. Could someone please shed some light on this.

  I have looked at the post below where Alex Cohn says "Alternatively, you can compile ffmpeg with libstagefright, and it will use hardware avc encoder." - android-how-to-encode-a-stream-of-images-to-h264-with-hardware-acceleration

  Could someone explain how to do this. I have compiled ffmpeg with the following options :

  --disable-avdevice
  
  --disable-decoder=h264
  
  --disable-decoder=h264_vdpau
  
  --enable-libstagefright-h264

  All this relates to enabling hardware decoding but what would I need to specify to enable hardware encoding ?

  My ffmpeg command to convert the images into a video looks like this :

  ffmpeg.execute(new String[]{"-framerate",
  
                  "25",
  
                  "-i",
  
                  "/images_directory/image%07d.jpg",
  
                  "-c:v",
  
                  "libx264",
  
                  "-preset",
  
                  "ultrafast",
  
                  "-tune",
  
                  "zerolatency",
  
                  "-r",
  
                  "25",
  
                  "-pix_fmt",
  
                  "yuv420p",
  
                  "output.mp4"})

  What should I change to enable hardware encoding ?

• VLC : Unable to open SDP file for H265 using FFMPEG

  18 septembre 2015, par Anakooter

  I am streaming live video using rtp and ffmpeg using this command :

  ffmpeg -re -f v4l2 -framerate 30 -video_size 640x480 -i /dev/video0 -c:v libx265 -tune zerolatency -s 320x240 -preset ultrafast -pix_fmt yuv420p -r 10 -strict experimental -f rtp rtp://127.0.0.1:49170 > ffmpeg.sdp

  The generated sdp file is :
  

  v=0
  
  o=- 0 0 IN IP4 127.0.0.1
  
  s=No Name
  
  c=IN IP4 127.0.0.1
  
  t=0 0
  
  a=tool:libavformat 56.36.100
  
  m=video 49170 RTP/AVP 96
  
  a=rtpmap:96 H265/9000

  Vlc gives the following error :

  The format of ’file :///home/username/ffmpeg.sdp’ cannot be detected. Have a look at the log for details.

  Terminal gives the following error :
  

  [0xaf801010] ps demux error: cannot peek
  
  [0xaf801010] mjpeg demux error: cannot peek
  
  [0xaf801010] mpgv demux error: cannot peek
  
  [0xaf801010] ps demux error: cannot peek
  
  [0xb6d00618] main input error: no suitable demux module for `file/:///home/username/ffmpeg.sdp'

  If I simply change libx265 -> libx264 in the command and H265 -> H264 the stream runs perfectly fine.

  However I need to stream on H265. Any Suggestions ?