Comments on: A better way to losslessly join MP3 files

By: Martin Grønholdt

Martin Grønholdt — Fri, 14 Oct 2011 10:34:32 +0000

This was a very helpful resource, a quick and easy sollution to my question. It doesn’t get any better!

Thank you.

By: NssY

NssY — Fri, 14 Oct 2011 04:13:47 +0000

Thanks for This Post.
mp3wrap command works very well instead of mp3cat (which I couldn’t find) and avoids cat command;

Thanks @CSLATE for the script.
Here is my modified script to handle everything.

Save as mp3merge

#!/bin/bash # Author: http://lyncd.com/2011/03/lossless-combine-mp3s/ # Purpose: Merge Multiple MP3 Files # Date: 14-Oct-2011


if [ $# -gt 2 ]; then

  output=$1

  shift

  first_part=$1

else

  echo "You need to enter at least 3 files as arguments."

  echo "The first argument is the output file."

  echo "The rest of the arguments are the files to be merged."

  echo "E.g."

  echo -e "->33[1;36mmp3merge final_output.mp3 \part1.mp3 part2.mp3 part3.mp333[0m"

  exit 1

fi
check_prereqs(){

  x=0

  # Check for mp3cat

  [[ ! -x `which mp3wrap` ]] && \

  echo -e "33[1;31mPlese install mp3wrap33[0m" && x=1

  

  # Check for id3cp

  [[ ! -x `which id3cp` ]] && \

  echo -e "33[1;31mPlease install libid3-tools33[0m" && x=1

  

  # Check for vbrfix

  [[ ! -x `which vbrfix` ]] && \

  echo -e "33[1;31mPlease install vbrfix33[0m" && x=1

  

  # Exit if id3cp or vbrfix is missing

  [[ $x -eq 1 ]] && echo '-> Exiting' && exit $x

}

# Main

check_prereqs

mp3wrap -v tmp.mp3 "$@"
# mp3wrap prefers to rename tmp.mp3 to tmp_MP3WRAP.mp3 (this is annoying)

id3cp $first_part tmp_MP3WRAP.mp3
# vbrfix --XingFrameCrcProtectIfCan tmp.mp3 "$output" && rm tmp.mp3
# In Ubuntu/Debian the option '--XingFrameCrcProtectIfCan' is meaningless

vbrfix tmp_MP3WRAP.mp3 "$output"

# Figure out how vbrfix faired if [ $? -eq 255 ]; then # file is not Not VBR (we move our tmp_MP3WRAP.mp3 to $output) mv tmp_MP3WRAP.mp3 "$output" elif [ $? -eq 0 ]; then rm tmp_MP3WRAP.mp3 fi

By: Join mp3 files: | eotmsnotes

Join mp3 files: | eotmsnotes — Wed, 21 Sep 2011 02:24:14 +0000

[...] http://lyncd.com/2011/03/lossless-combine-mp3s/ includes vbr header fixup utility http://mp3val.sourceforge.net/ check/fix mpeg audio files integrity. [...]

By: CSlate

CSlate — Tue, 06 Sep 2011 08:45:57 +0000

Lol, I told you I am bad at bash scripts.
change the line
vbrfix –XingFrameCrcProtectIfCan tmp.mp3 $output && rm tmp.mp3
vbrfix –XingFrameCrcProtectIfCan tmp.mp3 “$output” && rm tmp.mp3

I missed the double quotes from $output :).

By: CSlate

CSlate — Mon, 05 Sep 2011 19:05:10 +0000

Thanks for this. I turned it into a full script.
This saved me a lot of hassle.. Thanks to Simon for the code aswell, it made making the script easier(I’m rubbish at bash lol). Sadly though Simon’s script didn’t work for me.

On my PC the command is VbrfixConsole, but I left it as vbrfix in the script. I used a rpm from rpmseek.com, so maybe that’s why.

Save as “mp3merge”
#!/bin/bash


if [ $# -gt 2 ]; then

        output=$1

        shift

        first_part=$1

cat "$@" | mp3cat - - > tmp.mp3 id3cp $first_part tmp.mp3 vbrfix --XingFrameCrcProtectIfCan tmp.mp3 $output && rm tmp.mp3 else echo "You need to enter 3 files as arguments." echo "The first argument is the output file." echo "The rest of the arguments are the files to be merged." echo "E.g." echo -e "\tmp3merge final_output.mp3 part1.mp3 part2.mp3 part3.mp3" fi

By: simon

simon — Mon, 23 May 2011 11:09:46 +0000

just fyi, `vbrfix` will remove non-mp3 data frames for you too, so there’s actually no need to invoke `mp3cat` (this is handy for me, as on my Debian system `mp3cat` is the only bit I had to compile from source).

From the wrapper script I created:

cat “$@” > tmp.mp3
vbrfix -ri1 -ri2 -always tmp.mp3 “$output” && rm tmp.mp3
id3cp “$1″ “$output”

By: A better way to losslessly join MP3 files

A better way to losslessly join MP3 files — Thu, 17 Mar 2011 09:27:00 +0000

[...] 3 separate utilities. The good news is, I think I’ve found the one true method. The bad… [full post] sticks lyncd codemp3unix 0 0 0 0 0 [16 Mar [...]