Recherche avancée

Sur d’autres sites (6194)

• avcodec/vc1 : Arm 32-bit NEON unescape fast path

  31 mars 2022, par Ben Avison

  avcodec/vc1 : Arm 32-bit NEON unescape fast path
  checkasm benchmarks on 1.5 GHz Cortex-A72 are as follows.
  vc1dsp.vc1_unescape_buffer_c : 918624.7
  
  vc1dsp.vc1_unescape_buffer_neon : 142958.0
  Signed-off-by : Ben Avison <bavison@riscosopen.org>
  
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] libavcodec/arm/vc1dsp_init_neon.c
  • [DH] libavcodec/arm/vc1dsp_neon.S

• avcodec/opus/parser : remove duplicate failure path code

  3 janvier, par James Almer

  avcodec/opus/parser : remove duplicate failure path code
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavcodec/opus/parser.c

• How to convert multiple video files in a specific path outputvideo with the same video name

  31 janvier, par Oussama Gamer

  The following code to converts a one video from mp4 to avi using ffmpeg

  


  ffmpeg.exe  -i "kingman.mp4"  -c copy "kingman.avi"

  


  I need to convert multiple videos in a specific path. "outputvideo" with the same video name

  


  This is the my code that needs to be modified.

  


  from pathlib import Path
import subprocess
from glob import glob

all_files = glob('./video/*.mp4')

for filename in all_files:
     videofile = Path(filename)
     outputfile = Path(r"./outputvideo/")
     codec = "copy"
     ffmpeg_path = (r"ffmpeg.exe")

outputfile = outputfile / f"{videofile.stem}"

outputfile.mkdir(parents=True, exist_ok=True)

command = [
    f"{ffmpeg_path}",
    "-i", f"{videofile}",
    "-c", f"{codec}",
    "{outputfile}",]

process = subprocess.Popen(
    command,
    stdout=subprocess.PIPE,
    stderr=subprocess.PIPE,
    text=True,
    bufsize=1,
    universal_newlines=True)
process.communicate()