Tips on how to use Narakeet to create phone greetings https://www.narakeet.com/languages/canadian-accent-text-to-s...
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English
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Mandarin
https://ttsfree.com/text-to-speech/chinese-mandarin-simplified
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Cantonese
https://ttsfree.com/text-to-speech/chinese-cantonese-traditional
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Concatenate Audio files
$ cat mylist.txt
file '/path/to/file1'
file '/path/to/file2'
file '/path/to/file3'
$ ffmpeg -f concat -safe 0 -i mylist.txt -c copy output.mp4
For Windows:
(echo file 'first file.mp4' & echo file 'second file.mp4' )>list.txt
ffmpeg -safe 0 -f concat -i list.txt -c copy output.mp4How to read a file, which only contains a string, into Python, and then convert the string into a list?
from pathlib import Path
txt = Path('filename.txt').read_text()
list_ = list(txt.split('; '))
How to convert a pandas dataframe into a python list, and a python list into a pandas dataframe?
1. To convert a pandas dataframe into a python list
email_list = df['Email'].to_list()
or
email_list = df[['Name', 'Email']].to_list()
2. To convert a python list into a pandas dataframe
Examples
sudo apt-get install inkscapeinkscape filename.eps -l filename.svginkscape filename.svg -e filename.pngffmpeg -i "concat:VTS_01_1.VOB|VTS_02_1.VOB|VTS_03_1.VOB|VTS_04_1.VOB|VTS_05_1.VOB" outfile.mp4
ffmpeg -i input.wav -vn -ar 44100 -ac 2 -b:a 192k output.mp3Explanation of the used arguments in this example:
-i - input file-vn - Disable video, to make sure no video (including album cover image) is included if the source would be a video file-ar - Set the audio sampling frequency. For output streams it is set by default to the frequency of the corresponding input stream. For input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options.-ac - Set the number of audio channels. For output streams it is set by default to the number of input audio channels. For input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options. So used here to make sure it is stereo (2 channels)-b:a - Converts the audio bitrate to be exact 192kbit per secondyoutube-dl https://www.youtube.com/watch?v=S277aJyUehwffmpeg -i input -c:v libx264 -crf 23 -preset medium -c:a aac -b:a 128k \
-movflags +faststart -vf scale=-2:720,format=yuv420p output.mp4ffmpeg -ss 00:00:30 -i orginalfile -t 00:00:05 -vcodec copy -acodec copy newfileffmpeg -i source.mp4 -c:v libx264 -crf 19 destinationfile.flv
ffmpeg -i source.mp4 -c:v libx264 -ar 22050 -crf 28 destinationfile.flv
-crf XX is the quality of the video you will create. It's between 0 and 51 (but between 17 and 23 is a reasonable range and the lower the number is, the better quality the video is going to be).-ar 22050 is for adjusting the audio sample range (audio quality). You can choose 11025, 22050 or 44100.