How to batch convert/multiplex any files with ffmpeg

[ConverterCrazy]

Try adding /r after "for" and placing the bat file in the root folder (D:\MB)

Thanks @hemstock

Thanks for the '/r' tip.
Does it mean rescan subfolders?

That will not give the desired conversion as I pointed out.

[hemstock]

Yes it goes through subfolders too.

Im not familiar with what files cd players play I can't help you with the convertion.

[ConverterCrazy]

Yes it goes through subfolders too.

Im not familiar with what files cd players play I can't help you with the convertion.

This is a good tip.

Thanks.

[ConverterCrazy]

Hello,

Taking a clue from @baldrick's example (#1 Post) and the other from @hemstock, I created a batch file with the following commands:

for /r %%a in ("*.mpg") do "C:\ffmpeg-20151108\bin\ffmpeg" -i "%%a" -c:v libx264 -preset slow -crf 20 -c:a libvo_aacenc -b:a 128k "D:\MB\%%~na.mp4"
pause


It is not what I intended to do but is working as of now without any hitch and creating backup for me.

Thanks @baldrick's and @hemstock

[itzdjm]

Hi, I'm new here; I have a question:
tengo un archivo .mkv que tiene 2 audios; inglés y español

My question is how to convert to mp4 and choose the audio output between English or Spanish?

currently I use the following code:

for %%a in ("*.*") do C:\ffmpeg\bin\ffmpeg -i "%%a" -c:v libx264 -preset slow -crf 20 -c:a libvo_aacenc -b:a 128k "convert\%%~na.mp4"
pause

[jagabo]

Thanks for the '/r' tip.
Does it mean rescan subfolders?

R for Recurse through subfolders:

http://www.computerhope.com/jargon/r/recurse.htm

The term comes from the way this type of code works. Typically the function handles each file in a folder calls itself (recurses) to parse each sub folder.

[mikezz]

Delete.

[bat999]

... MP4 format so that it is accepted by youtube...

Hi
Use a command like this to create one mp4 file (whatever.mp4) from one jpg file (Herringbone.jpg) and one mp3 file (filename.mp3).

ffmpeg -loop 1 -i Herringbone.jpg -i filename.mp3 -shortest -c:v libx264 -tune stillimage -c:a copy -movflags faststart whatever.mp4

Make sure it uploads OK to YouTube.

Then add the extras to make a batch command, see the previous examples in this thread.

[mikezz]

... MP4 format so that it is accepted by youtube...

Hi
Use a command like this to create one mp4 file (whatever.mp4) from one jpg file (Herringbone.jpg) and one mp3 file (filename.mp3).

ffmpeg -loop 1 -i Herringbone.jpg -i filename.mp3 -shortest -c:v libx264 -tune stillimage -c:a copy -movflags faststart whatever.mp4

Make sure it uploads OK to YouTube.

Then add the extras to make a batch command, see the previous examples in this thread.

Thank you for your help.

[bat999]

... how to do a batch command that convert all my mp3 files into flv or mp4 while keep the same original filename with spaces. ..

Hi
This works as a batch command...

for %a in ("*.mp3") do ffmpeg -loop 1 -i Herringbone.jpg -i "%a" -shortest -c:v libx264 -tune stillimage -c:a copy -movflags faststart "%~na.mp4"

If you need to make a "batch.bat" file as in the tutorial it's like this...

for %%a in ("*.mp3") do ffmpeg -loop 1 -i Herringbone.jpg -i "%%a" -shortest -c:v libx264 -tune stillimage -c:a copy -movflags faststart "%%~na.mp4"
pause

[mikezz]

... how to do a batch command that convert all my mp3 files into flv or mp4 while keep the same original filename with spaces. ..

Hi
This works as a batch command...

for %a in ("*.mp3") do ffmpeg -loop 1 -i Herringbone.jpg -i "%a" -shortest -c:v libx264 -tune stillimage -c:a copy -movflags faststart "%~na.mp4"

If you need to make a "batch.bat" file as in the tutorial it's like this...

for %%a in ("*.mp3") do ffmpeg -loop 1 -i Herringbone.jpg -i "%%a" -shortest -c:v libx264 -tune stillimage -c:a copy -movflags faststart "%%~na.mp4"
pause

WOW thank you!!!

[VideoHelpPlz]

edit nevermind, got it!

[Baldrick]

edit nevermind, got it!

Instead of deleting your question tell us how you got it. It might help others!

[wiak]

only madmen does mkv > mp4
alot of players these days support mkv, even my samsung ultrahd tv does it now, and the ironiy it works even better with 4k mkv than 4k mp4
i suspect the samsung mp4 demuxer is horrible compared to samsung mkv demuxer (suspect this is either haali or the reference one)

anyway thanks for the great article

[cartunek]

Hello.
script that i use

for %%a in ("*.mkv") do "D:\PROGRAMY\ffmpeg\ffmpeg.exe" -i "%%a" -vf subtitles="%%a" -acodec copy -vcodec libx264 -preset medium -tune animation -crf 23  "C:\Users\DRAKO\Desktop\Nowy folder\newfiles\%%~na.mp4"

pause

and i want convert mkv to mp4 with .ass or .srt subtitles which are in the same folder

[Baldrick]

Hello.
script that i use

for %%a in ("*.mkv") do "D:\PROGRAMY\ffmpeg\ffmpeg.exe" -i "%%a" -vf subtitles="%%a" -acodec copy -vcodec libx264 -preset medium -tune animation -crf 23  "C:\Users\DRAKO\Desktop\Nowy folder\newfiles\%%~na.mp4"

pause

and i want convert mkv to mp4 with .ass or .srt subtitles which are in the same folder

I would see if mkv2mp4 supports that. To avoid any video reconversion.

[cartunek]

Hello.
script that i use

for %%a in ("*.mkv") do "D:\PROGRAMY\ffmpeg\ffmpeg.exe" -i "%%a" -vf subtitles="%%a" -acodec copy -vcodec libx264 -preset medium -tune animation -crf 23  "C:\Users\DRAKO\Desktop\Nowy folder\newfiles\%%~na.mp4"

pause

and i want convert mkv to mp4 with .ass or .srt subtitles which are in the same folder

I would see if mkv2mp4 supports that. To avoid any video reconversion.

Yeah... i need to make hardsubs because I want to watch on my TV, and my tv not support any sub styles etc... that's why i need to convert mkv to mp4 hardsub with external subtitles!

[pandy]

Hi, I'm new here; I have a question:
tengo un archivo .mkv que tiene 2 audios; inglés y español

My question is how to convert to mp4 and choose the audio output between English or Spanish?

currently I use the following code:

for %%a in ("*.*") do C:\ffmpeg\bin\ffmpeg -i "%%a" -c:v libx264 -preset slow -crf 20 -c:a libvo_aacenc -b:a 128k "convert\%%~na.mp4"
pause

You need to add map command and language:eng? language:esp?
https://ffmpeg.org/ffmpeg.html#Advanced-options

To pick the English audio stream:

ffmpeg -i INPUT -map 0:m:language:eng OUTPUT

[Gwar]

hello I have a folder with multiple avi files who all have mp3 as their audio format. I want to extract all the Audio tracks of the files at once.

I put all the files in the bin folder off ffmpeg so they are in the same folder as "ffmpeg.exe", "ffplay.exe", "ffprobe.exe" and my bat.
I used this command from user ********

FOR %%i IN ("*.avi") DO (
echo %%i
ffmpeg -i %%i -vn -acodec copy "newfiles\%%i.mp3"
)

but it doesn't work. The cmd opens, shows the code for the first file, does nothing and I can't close it anymore. I'm shure it's gone when I reboot. I would be happy if anyone knows what the right command is ?

[pandy]

hello I have a folder with multiple avi files who all have mp3 as their audio format. I want to extract all the Audio tracks of the files at once.

I put all the files in the bin folder off ffmpeg so they are in the same folder as "ffmpeg.exe", "ffplay.exe", "ffprobe.exe" and my bat.
I used this command from user ********

FOR %%i IN ("*.avi") DO (
echo %%i
ffmpeg -i %%i -vn -acodec copy "newfiles\%%i.mp3"
)

but it doesn't work. The cmd opens, shows the code for the first file, does nothing and I can't close it anymore. I'm shure it's gone when I reboot. I would be happy if anyone knows what the right command is ?

You trying to pass 2 different commands at once (in one line) you may try to use & operator so perhaps this will work (not tested):

FOR %%i IN ("*.avi") DO (echo %%i & ffmpeg -i %%i -vn -acodec copy "newfiles\%%i.mp3")

[Gwar]

You trying to pass 2 different commands at once (in one line) you may try to use & operator so perhaps this will work (not tested):

FOR %%i IN ("*.avi") DO (echo %%i & ffmpeg -i %%i -vn -acodec copy "newfiles\%%i.mp3")

thanks a lot Pandy. It almost works. It just doesn' accept filenames with blanks in it and skips them.
If ffmpeg only able to demux files with filenames which don't contain any blanks ?

let me know
thanks a lot

[pandy]

You trying to pass 2 different commands at once (in one line) you may try to use & operator so perhaps this will work (not tested):

FOR %%i IN ("*.avi") DO (echo %%i & ffmpeg -i %%i -vn -acodec copy "newfiles\%%i.mp3")

thanks a lot Pandy. It almost works. It just doesn' accept filenames with blanks in it and skips them.
If ffmpeg only able to demux files with filenames which don't contain any blanks ?

let me know
thanks a lot

http://stackoverflow.com/questions/6376113/spaces-problem-in-cmd

[Gwar]

http://stackoverflow.com/questions/6376113/spaces-problem-in-cmd

sorry I don't understand it at all I guess my english is too bad. Could you please help me with the command and where I have to insert quotations marks?
thanks a lot

[jagabo]

Put quotes around %%i.

[Gwar]

works perfect now. So I summarize it for everybody:

If you want to extract the Audio Tracks of Avi files go to the bin directory of ffmpeg, move all avi files in there, create a new folder "newfiles" and run this batch command

FOR %%i IN ("*.avi") DO (echo "%%i" & ffmpeg -i "%%i" -vn -acodec copy "newfiles\%%i.mp3")

thanks goes to pandy and jagabo
cheers
-gwar

[badogblue]

Nice guide, hoping someone can help me. I want to run a batch command to check the integrity of multiple .mp4

This is the command for 1 file:

ffmpeg -v error -i "File Name".mp4 -f null - >error.log 2>&1

I cant get the batch part to work, any help would be greatly appreciated.

[Baldrick]

Tried?

FOR %%i IN ("*.mp4") DO  ffmpeg -v error -i "%%i" -f null - >"%%i"-error.log 2>&1

And are you running windows?

[badogblue]

Tried?

FOR %%i IN ("*.mp4") DO  ffmpeg -v error -i "%%i" -f null - >"%%i"-error.log 2>&1

And are you running windows?

Yes running windows 7 32bit

Above command unfortunately doesn't work, command prompt returns:

%%i was unexpected at this time.

I've also tried:

find . -type f -exec sh -c 'ffmpeg -v error -i "{}" -f null - > "{}".log 2>&1' \;

It produces an error file, though it always gives the following error:

Access denied - .
File not found - -TYPE
File not found - F
File not found - -EXEC
File not found - SH
File not found - -C
File not found - 'FFMPEG
File not found - -V
File not found - ERROR
File not found - -I
File not found - -F
File not found - NULL
File not found - -
File not found - '
File not found - \;

[jagabo]

This worked for me:

for %%F in (*.mp4) do ("G:\Program Files\ffmpeg\bin\ffmpeg.exe" -v error -i "%%F" -f null - >error.log 2>&1)

But I don't have any mp4 files with errors so error.log was empty.

[badogblue]

This worked for me:

for %%F in (*.mp4) do ("G:\Program Files\ffmpeg\bin\ffmpeg.exe" -v error -i "%%F" -f null - >error.log 2>&1)

But I don't have any mp4 files with errors so error.log was empty.

Thanks, but again I get the same error as with Baldrick's command. (%%F was unexpected at this time.)

I tried updating ffmpeg to lastest build: f41e37b (2016-07-14), though still can't get it to work.