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Reduce transcoding in flipnote export

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Joshua Barrass committed 2022-08-26 01:55:19 +01:00
1 parent 50e49a4973
commit 6f1b5cc257
1 file changed
+13 -4
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PPM.py
+13 -4
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@@ -671,7 +671,8 @@ if __name__ == '__main__':
print " -f: Extracts the frame(s) to <Output>"
print " -s: Dumps the sound files to the folder <Output>"
print " -S: Same as mode -s, but will also dump the raw sound data files"
print " -e: Exports the flipnote to an MKV"
print " -e: Exports the flipnote to an MKV with minimal transcoding"
print " -E: Same as -e, but will encode the video as lossless H.265"
print " -m: Prints out the metadata. Can also write it to <output> which also"
print " supports unicode charactes."
print " -oa: Seach a directory for an original author that matches the RegEx"
@@ -822,7 +823,7 @@ if __name__ == '__main__':
if regex.match(meta["Original author"]):
print filename
elif sys.argv[1] == "-e":
elif sys.argv[1] == "-e" or sys.argv[1] == "-E":
if not hasffmpeg:
print "Error!\nffmpeg is not installed."
sys.exit()
@@ -885,14 +886,22 @@ 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","-preset","veryslow","-c:a","pcm_s16le","-t","{dur}".format(dur=duration),"-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","copy","-c:a","copy","-t","{dur}".format(dur=duration),"-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","-preset","veryslow","-c:a","pcm_s16le","-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","copy","-c:a","pcm_s16le","-shortest","-y",out_file]
else:
#has_bgm = True
pass
# use libx265 in lossless mode, rather than MPNG
if sys.argv[1] == "-E":
# insert the necessary arguments into the existing command
codec_index = export_command.index("-c:v")
export_command[codec_index+1] = "libx265"
export_command.insert(codec_index+2, "-x265-params")
export_command.insert(codec_index+3, "crf=0:lossless=1:preset=veryslow:qp=0")
print " ".join(export_command)
with open(os.devnull) as null:
subprocess.call(export_command,stdout=null,stderr=null)
print "Done!"