I have a bunch of huge .wav files which I want to convert to .m4a files via QuickTime export function.
As there are a lot of wav files I'd like to automate this process with Automator.
Could you please help me this task? The QuickTime player looks to be not recordable app for automator this is why I have to use Applescript which I do not know.
What I need is "Quick Action" which will be right click file/finder action: upon right click on a file I will choose "convert to m4a"
In my understanding the automator should get the file name and then export it as "Audio only" via Quicktime player.
In my primitive understanding it would be something like this -
tell application "QuickTime player"
activate
tell export rightClickedFile in file sameFolder using settings preset "Audio Only"
end tell
end tell
Any suggestions will be highly appreciated.
As you appear to be struggling with Automator, you could maybe consider using ffmpeg to convert your files.
To convert song.wav in your HOME directory into song.m4a at 320kb/s, you can run this in Terminal:
ffmpeg -i song.wav -c:a aac -b:a 320k song.m4a
If that looks good, you can do all the .wav file in the current directory with:
for f in *.wav; do ffmpeg -i "$f" -c:a aac -b:a 320k "${f%%.*}.m4a" ; done
As Apple doesn't provide a package manager, like many folk, I tend to use homebrew. Once you have homebrew installed, you can install, remove and maintain many hundreds of packages. You install ffmpeg with:
brew install ffmpeg
Related
I tryed to download a video+audio from YouTube by using youtube-dl:
youtube-dl https://www.youtube.com/watch?v=7wfUUZvybPY
I got a video file (.webm) without audio. I'm looking for a way to download video+audio in a single file by using the command line (cmd) in Windows 10. Do you have any suggestion?
youtube-dl.exe --format mp4 https://www.youtube.com/watch?v=7wfUUZvybPY
However, youtube-dl relies on ffmpeg for many format conversions. Install ffmpeg for Windows and look at youtube-dl docs here
I found a solution; the following command merges the audio and video files in a file.mkv:
youtube-dl.exe --sub-lang en --write-sub https://www.youtube.com/watch?v=7wfUUZvybPY
I'm making a Workflow to burn SRT to MP4. It's is working but I want it to go to all files of a folder and didn't find a way even with "Dispense Items Incrementally".
I have the SRT and the MP4 in the same folder, so I need the workflow to filter the results to only try the script with the MP4 files and maybe this is the problem for "Dispense Items".
Because the subtitled file goes to the same directory, the filter also excludes files named with "_SUB".
The image is below if someone has an idea... I'm open to other methods of doing this. I just need to go to a folder with 44 MP4 files (and .SRT with the same name) and batch encode the videos with subtitles.
Thank you,
Luiz
enter image description here
Open Terminal, navigate to the directory containing the files, and run:
for f in *.mp4; do ffmpeg -i "$f" -vf "subtitles=${f%.*}.srt" -c:a copy "${f%.*}_srt.mp4"; done
I am newly using "ffmpeg". I have compressed the video which is stored in the directory, then I got to know that we can do "compression and recording" both at a time using ffmpeg. I tried this by using the below command but that is not working unable to record as well. Anyone please help me out to solve. Thanks in advance.
I tried using this command "ffmpeg -f gdigrab -framerate 10 -i desktop out.mpeg" this is giving error like- "Unknown input format: 'gdigrab' ".
I want the result which should "compress the live recording video" and store it in a folder or db.
I have an mp4 which I want to convert from color to black and white using the terminal.
How?
EDIT: My question is NOT a duplicate because I want to do this with an mp4 (video, not image).
If you install ffmpeg (cross-platform video converter), you can do it with a one line command by filtering the saturation to 0.
ffmpeg -i <inputfile> -vf hue=s=0 -acodec copy <outputfile>
Maybe overkill but GStreamer could probably achieve that. It's mainly for streaming media but you can use it to manipulate local files also.
https://gstreamer.freedesktop.org/
It can either be executed as a command taking your mp4 as argument along with a long series of other arguments directly from the terminal or the framework can be imported in a project. Takes some time to get the hang of it tho and it's probably an easier way.
I found this screenshot which shows that you can add a cover image to an mkv file in a way that it is displayed as the icon of the file in the Windows explorer using Shark007+icaros.
But these tools are messing with the system in a really bad way. A lot of people are having problems with it and I too very much regret that I've installed it. I'm really glad I got my Windows to boot again...
Anyway, how could I programmatically add a cover image to an mkv file?
And would I need to change something in the registry to make Windows display them?
I'm not neccessarely looking for code, I'm more looking for something like the format the cover needs to have and the byte at which I have to inject/insert/attach the image file and maybe a registry entry that would cause the tagged images to be displayed etc.
You can use the FFmpeg multimedia framework to attach an image as MKV metadata. More Windows builds can be found at Zeranoe.
Example CLI usage:
ffmpeg -i input.mkv -c copy -attach image.jpg -metadata:s:t \
mimetype=image/jpeg output.mkv
-c copy copy all streams in the source file without re-encoding
-attach image.jpg attach a JPEG image
-metadata:s:t mimetype=image/jpeg set the attachement MIME type
On *nix the same can be accomplished with MKVToolNix.
Ubuntu demo:
Programmatic approach:
use the ffmpeg C libraries to attach or replace the cover art
write a custom Shell Extension to read the MKV format and display the image attachement as thumbnail.