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Sur d’autres sites (9394)

  • Revision 084c49ac79 : Adjust speed feature for —rt Moved a few features with low impact on compressi

    4 février 2014, par Yaowu Xu

    Changed Paths :
     Modify /vp9/encoder/vp9_onyx_if.c



    Adjust speed feature for —rt

    Moved a few features with low impact on compression form -5 to -4 and
    increased adaptive_rd_thresh for -5.

    Change-Id : Ib1b748168cc6ed7684ae4818499f3a536ae76253

  • lavfi : add rotate filter

    11 juin 2013, par Stefano Sabatini
    lavfi : add rotate filter

    Based on the libavfilter SOC filter by Vitor Sessak, with the following additions :
    
* integer arithmetic
    
* bilinear interpolation
    
* RGB path
    
* configurable parametric angle, output width and height
    

    Address trac issue #1500.
    

    See thread :
    
Subject : [FFmpeg-devel] [WIP] rotate filter(s)
    
Date : 2010-10-03 17:35:49 GMT
    • [DH] Changelog
    • [DH] doc/filters.texi
    • [DH] libavfilter/Makefile
    • [DH] libavfilter/allfilters.c
    • [DH] libavfilter/version.h
    • [DH] libavfilter/vf_rotate.c

  • How can i parse strings as the inputs to subprocess.Popen ?

    26 juillet 2013, par rash

    Here I tried to cut first and second 30sec long video file from "path/connect.flv" to the files output1.flv and output2.flv. It works. I able to concatenate these two files to form a new file "final.flv" of 60sec long. So this works and i am getting the outputs output1.flv [30sec], output2.flv[30sec] and final.flv[1min].

    Here is the python code :

    import subprocess
    

    
ffmpeg_command1 = ["ffmpeg", "-i", "/home/xincoz/test/connect.flv", "-acodec", "copy", "-ss", "00:00:00", "-t", "00:00:30", "/home/xincoz/test/output1.flv"]
    

    
ffmpeg_command2 = ["ffmpeg", "-i", "/home/xincoz/test/connect.flv", "-acodec", "copy", "-ss", "00:00:30", "-t", "00:00:30", "/home/xincoz/test/output2.flv"]
    

    
ffmpeg_command3 = ["mencoder", "-forceidx", "-ovc", "copy", "-oac", "pcm", "-o", "/home/xincoz/test/final.flv", "/home/xincoz/test/output1.flv", "/home/xincoz/test/output2.flv"]
    

    
subprocess.call(ffmpeg_command1)
    

    
subprocess.call(ffmpeg_command2)
    

    
subprocess.Popen(ffmpeg_command3)

    But what i really want is to concatenate two strings out1 and out2 and concatinate these two to a file instead of concatenating "/home/xincoz/test/output1.flv" and "/home/xincoz/test/output2.flv". So how can i parse string out1 and out2 as the inputs to mencoder ? Please edit my code to achieve the result.

    import subprocess,os
    

    
ffmpeg_command = ["ffmpeg", "-i", "/home/xincoz/test/connect.flv", "-acodec", "copy", "-ss", "00:00:00", "-t", "00:00:30","-f", "flv", "pipe:1"]
    

    
p = subprocess.Popen(ffmpeg_command,stdout=subprocess.PIPE)
    

    
out1, err = p.communicate()
    

    
ffmpeg_command1 = ["ffmpeg", "-i", "/home/xincoz/test/connect.flv", "-acodec", "copy", "-ss", "00:00:30", "-t", "00:00:30","-f", "flv", "pipe:1"]
    

    
p1 = subprocess.Popen(ffmpeg_command1,stdout=subprocess.PIPE)
    

    
out2, err1 = p1.communicate()
    

    
ffmpeg_command2 = ["mencoder", "-forceidx", "-ovc", "copy", "-oac", "pcm", "-o", "/home/xincoz/test/final.flv", out1, out2 ]
    

    
p2=subprocess.Popen(ffmpeg_command2)

    Please help me. Thanks a lot in advance.

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