Mencoding Mass

[Ryan450]

Hey guys,

Lately I've been dumping a lot of my home videos from tape to digital formats using a capture card. After editing I get a .avi file format, and then use mencoder to convert to dvd format for burning.

However lately I've gotten a lot of files ready for conversion, but its getting tedious. I'd like to automate the encode process.

Here's the command I run.

mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf scale=720:480,harddup \
-srate 48000 -af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18:aspect=16/9:\
acodec=ac3:abitrate=192:threads=4 -ofps 30000/1001 -o your_video.mpg your_video.avi

I'd like to run this command on every file in my directory, put the output of the command into its own directory for easy management.

[loganwm]

Hey guys,

Lately I've been dumping a lot of my home videos from tape to digital formats using a capture card. After editing I get a .avi file format, and then use mencoder to convert to dvd format for burning.

However lately I've gotten a lot of files ready for conversion, but its getting tedious. I'd like to automate the encode process.

Here's the command I run.

mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf scale=720:480,harddup \
-srate 48000 -af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18:aspect=16/9:\
acodec=ac3:abitrate=192:threads=4 -ofps 30000/1001 -o your_video.mpg your_video.avi

I'd like to run this command on every file in my directory, put the output of the command into its own directory for easy management.

I'll write you up something in C if I can figure it.

Is there a command line argument to have it exit when done with one video?

[meanburrito920]

I would suggest using a bash script. I myself would probably use python (I did a python script like this recently to fix a subversion problem.) if you want to do python, the class you want to look at is os.walk()

[Ryan450]

I would suggest using a bash script. I myself would probably use python (I did a python script like this recently to fix a subversion problem.) if you want to do python, the class you want to look at is os.walk()

Yes a bash script would suit perfectly, and is what I've been trying to do for the last little bit but I just cant remember bash scripting, been having a hard time finding a decent resource to do this.

Only thing that ever comes up in google is these stupid little snippits that have nothing to do with what I'm actually looking for.

[loganwm]

Yes a bash script would suit perfectly, and is what I've been trying to do for the last little bit but I just cant remember bash scripting, been having a hard time finding a decent resource to do this.

Only thing that ever comes up in google is these stupid little snippits that have nothing to do with what I'm actually looking for.

WinFF could also be suitable for your needs, that is, if I understand you correctly.

[Ryan450]

WinFF could also be suitable for your needs, that is, if I understand you correctly.

Why use something different if what I'm currently using good enough already? I also dont know what settings that gui is using.

For instance the command above I figured out by reading mencoders documentation to figure out the options I wanted and to get it to use all 4 of my processor cores for maximum speed.

I'd much rather use a script in the terminal rather then a gui any day as I can further customize it in the future.

[hod139]

Not sure what you want. This one liner will run your mencoder command on every file with a .mpg extension. Note, this is untested and might break if files have spaces.

for i in `ls *.mpg`; do
mencoder -oac lavc -ovc lavc -of mpeg -mpegopts format=dvd -vf scale=720:480,harddup \
-srate 48000 -af lavcresample=48000 \
-lavcopts vcodec=mpeg2video:vrc_buf_size=1835:vrc_maxrate=9800:vbitrate=5000:keyint=18:aspect=16/9:\
acodec=ac3:abitrate=192:threads=4 -ofps 30000/1001 -o ${i} ${i%.mpg}.avi;
done

[loganwm]

Why use something different if what I'm currently using good enough already? I also dont know what settings that gui is using.

For instance the command above I figured out by reading mencoders documentation to figure out the options I wanted and to get it to use all 4 of my processor cores for maximum speed.

I'd much rather use a script in the terminal rather then a gui any day as I can further customize it in the future.

It's alright man, I didn't realize that you wanted it in a specific method.

Just giving suggestions.

[meanburrito920]

If you're looking to learn some bash, look here. tldp.org has some great stuff.

http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html

[Ryan450]

ok What I have is a ton of .avi files in a directory.

I want to run the command I supplied in my first post in this thread on every .avi file in the directory.

The output of the command is a .mpg which I want in its own directory called output.