Recherche avancée

Sur d’autres sites (7769)

• ffmpeg - escaping single quotes doesn't work [duplicate]

  18 septembre 2022, par XorOrNor

  I've written a small python script for mass converting audio files. It uses ffmpeg. The problem is it doesn't work for files with single quotes in their filenames.

  


  script :

  


  
import os
import subprocess
import sys
from multiprocessing.pool import ThreadPool as Pool

source_dir="/home/kris/Music/test"
output_dir="/home/kris/Music/test_opus"

def worker(file):

    try:    
        dirname=os.path.dirname(file)
        file=file.replace("'","\\\\'")
        filename=file.split('.flac')[0]
        
        input_file=f"'{source_dir}/{file}'"
        output_file=f"'{output_dir}/{filename}.opus'"
        cmd="ffmpeg -n -i "+input_file+" -c:a libopus -b:a 320k "+output_file
        print(cmd)
        result = subprocess.call(cmd,stdout=subprocess.PIPE,shell=True)
    except:
        print('item error')
        

def start():    
    threads=os.cpu_count()  
    pool = Pool(threads)
    files=os.listdir(source_dir)
    for item in files:
        pool.apply_async(worker, (item,))

    pool.close()
    pool.join()
        
start()



  


  Testing :

  


  


  1. Filename : I'm a file.flac

     


  


  2. When escaping single quote ' with double backslashes \\ - file=file.replace("'","\\\\'") the cmd for ffmpeg is :

     


  


  


  ffmpeg -n -i '/home/kris/Music/test/I\\'m a file.flac' -c:a libopus -b:a 320k '/home/kris/Music/test_opus/I\\'m a file.opus'


  


  ffmpeg returns an error : /home/kris/Music/test/I\\m: No such file or directory

  


  

  3. When escaping single quote ' with a single backslash \ - file=file.replace("'","\\'") the cmd for ffmpeg is :

  


  


  ffmpeg -n -i '/home/kris/Music/test/I\'m a file.flac' -c:a libopus -b:a 320k '/home/kris/Music/test_opus/I\'m a file.opus'


  


  I got an error :

  


  /bin/sh: 1: Syntax error: Unterminated quoted string


  


  According to ffmpeg docs : https://ffmpeg.org/ffmpeg-utils.html#toc-Examples escaping with single backslash should work.

  


• Revision d068d869b9 : sb8x8 integration in rd loop. Work-in-progress, not yet ready for review. TODO

  1er mai 2013, par Ronald S. Bultje

  Changed Paths :
   Modify /vp9/common/vp9_blockd.h

  
   Modify /vp9/common/vp9_entropymode.c

  
   Modify /vp9/common/vp9_entropymode.h

  
   Modify /vp9/common/vp9_enums.h

  
   Modify /vp9/common/vp9_findnearmv.h

  
   Modify /vp9/common/vp9_loopfilter.c

  
   Modify /vp9/common/vp9_onyxc_int.h

  
   Modify /vp9/common/vp9_reconinter.c

  
   Modify /vp9/decoder/vp9_decodemv.c

  
   Modify /vp9/decoder/vp9_decodframe.c

  
   Modify /vp9/encoder/vp9_bitstream.c

  
   Modify /vp9/encoder/vp9_block.h

  
   Modify /vp9/encoder/vp9_encodeframe.c

  
   Modify /vp9/encoder/vp9_encodeintra.c

  
   Modify /vp9/encoder/vp9_encodeintra.h

  
   Modify /vp9/encoder/vp9_encodemb.c

  
   Modify /vp9/encoder/vp9_encodemb.h

  
   Modify /vp9/encoder/vp9_modecosts.c

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_onyx_int.h

  
   Modify /vp9/encoder/vp9_quantize.c

  
   Modify /vp9/encoder/vp9_ratectrl.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
   Modify /vp9/encoder/vp9_rdopt.h

  
   Modify /vp9/encoder/vp9_segmentation.c

  
   Modify /vp9/encoder/vp9_tokenize.c

  
  
  sb8x8 integration in rd loop.

  Work-in-progress, not yet ready for review. TODO items :
   bitstream writing (encoder) and reading (decoder)
   decoder reconstruction

  Change-Id : I5afb7284e7e0480847b47cd0097cb469433c9081

• Unable to build x264 for Android : configure doesn't work with cross-compile flags

  18 février 2016, par Pavel S.

  There is a problem when I try to build x264 lib in order to make it work with ffmpeg lib. I use Ubuntu 14.04.
  I have cloned fresh x264 sources.
  But when I run ./configure script, I got several issues :

  1. It doesn’t accept cross compile flags It doesn’t accept cross-compile flags (—cross-prefix, —host, —sysroot).
     Here’s how I run configure script :

     ./configure     --enable-pic \
     
                 --enable-static \
     
                 --disable-cli \
     
                 --host=arm-linux (or ARM, it doesn't work either) \
     
                 --cross-prefix=$ANDROID_NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-$HOST_ARCH/bin/arm-linux-androideabi- \
     
                 --sysroot=$ANDROID_NDK/platforms/android-14/arch-arm \

  In this case default configuration is used.

  When I don’t pass 3 last flags, flags 1-3 are successfully used in config.

  2. With any flags passed to configure script, I see these errors in config.log :

     checking for -lpostproc... no
     
     Failed commandline was:
     
     gcc conftest.c -m64  -Wall -I. -I$(SRCPATH) -std=gnu99 -mpreferred-stack-boundary=5  -lpostproc  -m64  -lm -lpthread -o conftest
     
     ...
     
     /usr/bin/ld: cannot find -lpostproc
     
     collect2: error: ld returned 1 exit status

  Same I see for

  ...
  
  conftest.c:1:32: fatal error: libswscale/swscale.h: No such file or directory
  
  #include <libswscale></libswscale>swscale.h>

  Here’s full config.log :
  http://pastebin.com/U6aHKc28

  I guess I probably need to install ffmpeg on my Ubuntu to properly build x264 ?

  Any advice ?