FFMPEG encode directory

[darklift]

Hi,

I have a CENTOS server with FFMPEG installed. I have around 40 directories with MP4 files in them. I'm currently re-encoding the files into an android optimized MP4 using the following command

$ ffmpeg -i infile.mp4 -s 432x320 -threads 4 -vcodec libx264 -flags +loop+mv4 -cmp 256 -partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 -subq 5 -trellis 1 -refs 5 -bf 0 -flags2 +mixed_refs -coder 0 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 27 -qmax 32 -qdiff 4 -b 384k -r 600 -acodec libfaac -ar 48000 -ab 48000 -pass 1 outfile.mp4]

It's taking quite some time, but that's okay. I'm wondering if there is a way to convert all the MP4 files in a particular directory and place the encoded output into the same directory. I've seen a couple of threads about this. But in those threads the input format is different from the output, so I'm not sure if it'll work for me.

Thanks

[Baldrick]

for I in *.mp4; do ffmpeg -i "$I" -s 432x320 -threads 4 -vcodec libx264 -flags +loop+mv4 -cmp 256 -partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 -subq 5 -trellis 1 -refs 5 -bf 0 -flags2 +mixed_refs -coder 0 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 27 -qmax 32 -qdiff 4 -b 384k -r 600 -acodec libfaac -ar 48000 -ab 48000 -pass 1 "${I%.mp4}new.mp4";done

Try it in a folder with some test mp4 files first.

[darklift]

Sorry, I'm kind of a linux newbie. How do I execute that? When I type all that and press enter, it takes me to the next line and stays blank. However when I press the up arrow to check the previous commands, I can see a large command that I never entered.

I'm testing it inside a folder with 2 MP4 files.

Thanks
____________________________________
Edit: I did some searching. So, I should put the code in a .sh file in a directory and then execute it by bash name.sh, right? When doing that I get a syntax error at line 2

Edit 2: It worked. All I had to do was add 'done' at the end of the code and then execute it.

Thanks a lot

[Baldrick]

I forgot the done after the last;

for I in *.mp4; do ffmpeg -i "$I" -s 432x320 -threads 4 -vcodec libx264 -flags +loop+mv4 -cmp 256 -partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 -subq 5 -trellis 1 -refs 5 -bf 0 -flags2 +mixed_refs -coder 0 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 27 -qmax 32 -qdiff 4 -b 384k -r 600 -acodec libfaac -ar 48000 -ab 48000 -pass 1 "${I%.mp4}new.mp4";done

And nope, you don't have to put it in a file. You can run it directly.

I'm running a test on centos right now,

for I in *.mp4; do ffmpeg -i "$I" -sameq "${I%.mp4}new.mp4"; done

and it works fine.


edit: I see that you have already found the solution.

[darklift]

Yeah, found it just before you made that post. Thanks.

I need a little more help.

for I in *.mp4; do ffmpeg -i "$I" -s 432x320 -threads 4 -vcodec libx264 -flags +loop+mv4 -cmp 256 -partitions +parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 -subq 5 -trellis 1 -refs 5 -bf 0 -flags2 +mixed_refs -coder 0 -me_range 16 -g 250 -keyint_min 25 -sc_threshold 40 -i_qfactor 0.71 -qmin 27 -qmax 32 -qdiff 4 -b 384k -r 600 -acodec libfaac -ar 48000 -ab 48000 -pass 1 "${I%.mp4}new.mp4";done

How can I make the same script do the QT-faststart and an MP4Box -isma on the output file.

Since there are around 50-100 files in one directory, it's a little time consuming to perform a QT-faststart and an MP4box isma on it one by one.

FFMPEG converts my 01.mp4,02.mp4 into 01new.mp4,02new.mp4 etc. I take the obtained 01new.mp4 file and run this
qt-faststart 01new.mp4 01.mp4
MP4Box -isma 01.mp4

Can you update the script to perform these two functions as well? Thank you

[Baldrick]

Try

for I in *new.mp4; do qt-faststart "${I%.mp4}.mp4" "${I%.mp4}qt.mp4";done

for I in *newqt.mp4; do MP4Box -isma "${I%.mp4}.mp4"; done

ANd you should end uppt 01newqt.mp4, 02newqt.mp4, etc

[darklift]

Hey, thanks a lot man. It works like charm.