Question

我有两组图像，我没有问题与avconv分开组合（使用-r使用不同的速率）一组设置为-r .20（将一个图像延伸到五秒视频），另一组设置为a定期帧率以常规速度组合视频。

当我尝试将这些单独的avi文件与avconv或avimerge组合时，生成的视频只有第一个视频的帧速率（-r .20）

有没有办法将这两个序列组合在一起？两个序列的输出帧速率是什么？

这是我在这里放在一起的草率代码：

try:

p = subprocess.Popen(["avconv" , "-y" ,  "-r" , ".20" , "-i" , "head%03d.jpg" , "-i" , audio , head_video_filename],  universal_newlines=True, stdout=subprocess.PIPE)      
    out, err = p.communicate()
    retcode = p.wait()
except IOError:
    pass
else:
    print "] ENCODING OF HEADER.AVI FINISHED:" + str(retcode)

try:
    p = subprocess.Popen(["avconv" , "-y"  , "-i" , "tail%03d.jpg" , "-r" , "25" , tail_video_filename],  universal_newlines=True, stdout=subprocess.PIPE)      
    out, err = p.communicate()
    retcode = p.wait()
except IOError:
    pass
else:
    print "] ENCODING OF TAIL.AVI FINISHED:" + str(retcode)
try:

    group_of_videos = "concat:"+head_video_filename+"|"+tail_video_filename
    p = subprocess.Popen(["avconv" , "-i" , group_of_videos , "-c" , "copy" , full_video_filename] ,  universal_newlines=True, stdout=subprocess.PIPE)      
    out, err = p.communicate()
    retcode = p.wait()
except IOError:
    pass
else:
    print "] ENCODING OF FULL_VIDEO.AVI FINISHED:" + str(retcode)


return

＃

Answer 1

我或多或少想出来了。这些是我采取的步骤虽然更长，它或多或少给了我两个来自不同来源的视频作为图像和帧速率，一起编码它们的机会，并为结束视频添加单独的音乐曲目。它工作得很好，但仍然需要调整帧速率（30，29.X等以获得恰到好处）

编码输入为.2的第一个视频序列，并以30FPS输出

try:
    p = subprocess.Popen(["avconv" , "-stats" , "0" , "-y"  ,  "-r" , ".2" , "-i" , "first%03d.jpg" , "-crf" , "1" , "-s" ,  "1280x720" , "-r" , "30" ,first_video_filename],  universal_newlines=True, stdout=subprocess.PIPE)     
    out, err = p.communicate()
    retcode = p.wait()
except IOError:
    pass
else:
    print "] ENCODING OF FIRST VIDEO FINISHED: " + str(retcode)

编码第二个视频序列输入为29.7FPS并以30FPS输出

try:
    p = subprocess.Popen(["avconv" , "-stats" , "0" , "-y" , "-i" , "second%03d.jpg" , "-crf" , "1" , "-b" , "65536k" , "-s" , "1280x720" , "-r" , "30" , second_video_filename],  universal_newlines=True, stdout=subprocess.PIPE)     
    out, err = p.communicate()
    retcode = p.wait()
except IOError:
    pass
else:
    print "] ENCODING OF SECOND VIDEO FINISHED: " + str(retcode)

结合avi的

try:
    p = subprocess.Popen(["mencoder"  , "-forceidx" , "-ovc" , "copy" , "-o" , combined_video_filename , first_video_filename , second_video_filename] ,  universal_newlines=True, stdout=subprocess.PIPE)      
    out, err = p.communicate()
    retcode = p.wait()
except IOError:
    "* FAILED TO MAKE COMBINED VIDEO"
    pass
else:
    print "] ENCODING OF COMBINED VIDEO FINISHED:" + str(retcode)

#add audio mix track

try:
    p = subprocess.Popen(["avconv"  , "-stats" , "0" , "-y" , "-i" , combined_video_filename , "-i" , combined_audio , "-c" , "copy" , "-crf" , "1" , "-b" , "65536k" ,"-shortest" , final_video_filename] ,  universal_newlines=True, stdout=subprocess.PIPE)      
    out, err = p.communicate()
    retcode = p.wait()
except IOError:
    "* FAILED TO MAKE FINAL VIDEO"
    pass
else:
    print "] ENCODING OF FINAL VIDEO FINISHED: " + str(retcode)

火腿吝啬了，但希望有一天能帮助别人 XOXOXOX

如何将不同帧速率下的两个不同图像序列组合成一个视频与avconv＆amp;蟒蛇？

1 个答案: