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ffmpeg writes to a temp file and then removes the original to avoid corruption while it is processing, and now uses WAV PCM as the audio format to try to maximise the quality

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WORD559 committed 2018-07-05 21:35:04 +01:00
1 parent 15a006cc5b
commit dd51daf550
1 file changed
+5 -3
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PPM.py
+5 -3
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@@ -857,11 +857,11 @@ if __name__ == '__main__':
# Now to make the video in ffmpeg
print "Exporting video with ffmpeg..."
export_command = ["ffmpeg","-framerate",str(fps),"-start_number","1","-i","{path}/frame %03d.png".format(path=tempdir),"-i","{path}/sounds/BGM.wav".format(path=tempdir),"-c:v","libx264","-shortest","-y",out_file]
export_command = ["ffmpeg","-framerate",str(fps),"-start_number","1","-i","{path}/frame %03d.png".format(path=tempdir),"-i","{path}/sounds/BGM.wav".format(path=tempdir),"-c:v","libx264","-c:a","pcm_s16le","-shortest","-y",out_file]
if not os.path.isfile(tempdir+"/sounds/BGM.wav"):
print "No background music. Adding silent track..."
#has_bgm = False
export_command = ["ffmpeg","-framerate",str(fps),"-start_number","1","-i","{path}/frame %03d.png".format(path=tempdir),"-f","lavfi","-i","anullsrc=r=8192:cl=mono","-c:v","libx264","-shortest","-y",out_file]
export_command = ["ffmpeg","-framerate",str(fps),"-start_number","1","-i","{path}/frame %03d.png".format(path=tempdir),"-f","lavfi","-i","anullsrc=r=8192:cl=mono","-c:v","libx264","-c:a","pcm_s16le","-shortest","-y",out_file]
else:
#has_bgm = True
pass
@@ -875,7 +875,7 @@ if __name__ == '__main__':
# The second concatenates the silent track and the sound effect, producing a sound file that can be mixed into the video's audio track so that it plays at the correct time.
SFX_command = ["ffmpeg","-i","{path}/silence.wav","-i","{path}/sounds/{sfx}.wav","-filter_complex","[0:a] [1:a] concat=n=2:v=0:a=1","-y","{path}/sfx.wav"]
# The third mixes the silence+sound effect into the video file
merge_command = ["ffmpeg","-i",out_file,"-i","{path}/sfx.wav","-filter_complex","[0:a][1:a] amix=inputs=2:duration=longest","-c:v","copy","-y",out_file]
merge_command = ["ffmpeg","-i",out_file,"-i","{path}/sfx.wav","-filter_complex","[0:a][1:a] amix=inputs=2:duration=longest","-c:a","pcm_s16le","-c:v","copy","-y","{path}/temp_out.mkv"]
## for sfx in ["SFX1","SFX2","SFX3"]:
## if not os.path.isfile("{path}/sounds/{sfx}.wav".format(path=tempdir,sfx=sfx)):
@@ -902,6 +902,8 @@ if __name__ == '__main__':
subprocess.call([i.format(path=tempdir,sfx=sfx,length=length) for i in silence_command],stdout=null,stderr=null)
subprocess.call([i.format(path=tempdir,sfx=sfx) for i in SFX_command],stdout=null,stderr=null)
subprocess.call([i.format(path=tempdir) for i in merge_command],stdout=null,stderr=null)
os.remove(out_file)
shutil.move("{path}/temp_out.mkv".format(path=tempdir),out_file)
print "Done!"
time.sleep(sleep_time) # optional sleep -- in case you want to slow things down for HDD strain or reliability or something