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• windows phone8 wp8 arm neon assembly [closed]

  3 février 2013, par user2036635

  I am about to transplant a project onto wp8. Unfortunately, most part of the project was written by arm neon assembly code with AT&T format, just like ffmpeg(neon).

  Any suggestion about tools or methods to quickly doing that? 

• Performance Evaluation of RTX 3080 10G in ffmpeg Transcoding

  26 juin 2023, par JoeLin

  My GPU is RTX 3080 10G ,in ffmpeg , command is :

  


  ffmpeg -loglevel level+info
  
-n -hide_banner -hwaccel cuda -hwaccel_device 0 -hwaccel_output_format cuda
  
-i test.mkv
  
-map 0
  
-c:a copy -preset slow -g 50 -bf 2 -rc:v vbr -cq:v 20 -c:v : h264_nvenc -b:v : 3500k -maxrate:v:0 3500k -bufsize:v:0 7000k -map a:0 -var_stream_map "v:0,a:0,name:1080"
  
"/data/joe/speed/1080_test.mp4"
  
-benchmark

  


  My video file is 3.5G and it takes 27 minutes to execute this command. Can you please tell me if this is within a reasonable range ? By checking the logs, I found that the speed is 7.0x. I would like to know how efficient the transcoding capability of RTX 3080 is and if there are any GPUs with a similar price range that offer better transcoding performance. Alternatively, could there be an issue with my command parameters ? Thank you for your help, guys !

  


  I haven't found similar documentation, so I'm unsure if it's due to an issue with my command

  


• Recursively scan and identify video files with FFMPEG

  2 mars 2021, par Jason Paul Michaels

  UPDATE

  


  Thank you everyone for sharing up your suggestions. I was able to make the work properly by modifying it as follows.

  


  #!/bin/bash

ROOTPATH="/Volumes/NVME-RAID/ASSET-Processing/CORRUPT-SCAN/SCAN " # manually define root  path to your folder that has subfolders
for subdir in *; do
  cd ${ROOTPATH}${subdir} 
  mkdir 00errors
  
  for path in *.{MOV,mov,MP4,mp4}; do

    ffmpeg -i "${path}" -f null -; echo$?
    RC=$?

    if [ "${RC}" -ne "0" ]; then
        # Do something to handle the error.
        mv ${path} ./00errors
    fi

  done
  cd ../
done


  


  The only issue i have now is that it does not appear to be traversing the subfolders. As I understand it it should create a "00errors" folder in within EACH sub folder and move the errors files within that sub folder.

  


  trying to sift through 14TB of recovered video...

  


  I'm trying to figure out how to properly convert this script so it will run on a bash/MacOS. I'm coming to a wall with the "ROOTPATH" call because MacOS doesn't use /mnt

  


  #!/bin/bash

ROOTPATH="/mnt/f/00test/" # manually define root  path to your folder that has subfolders
for subdir in *; do
  cd ${ROOTPATH}${subdir} 
  mkdir 00errors
  
  for path in *.mp4; do

    ffmpeg error -i "${path}"
    RC=$?

    if [ "${RC}" -ne "0" ]; then
        # Do something to handle the error.
        mv ${path} ./00errors
    fi

  done
  cd ../
done


  


  REF Quickly check the integrity of video files inside a directory with ffmpeg