i7remux -- video converter for COWON iAUDIO 7 - Page 4

Zweistein · 04-30-2009, 15:27

I've never used i7remux, but buffer overflow in sprintf usually means some text is longer than expected. Did you check the fix neonleonb suggested in post #43?

You could try to shorten the names of files, or shorten any text you specify as an option such as ID3 tags.

elpresidente · 05-05-2009, 12:23

Quote:

Originally Posted by Zweistein

I've never used i7remux, but buffer overflow in sprintf usually means some text is longer than expected. Did you check the fix neonleonb suggested in post #43?

You could try to shorten the names of files, or shorten any text you specify as an option such as ID3 tags.

I am also having the buffer overflow problem. I am not sure how to run the fix suggested in post #43.

Zweistein · 05-05-2009, 14:59

I had a look at the code and there's no doubt neonleonb found a bug.
In directory i7remux-0.1, file AviFile.cc, line 685 is "char id[4];".
The 4 should be increased to 5. Or if you're a purist, the sprintf
statements operating on it should be changed, but that's more difficult.

After this, run "make" and "su -c 'make install'" again.

If that still doesn't help, you could debug it:
- remove the -O2 in Makefile, line 29 (the line that sets CXXFLAGS)
- run "make clean"
- run "make"
- run "gdb --args i7remux xyz" where xyz are the arguments you normally pass to i7remux
In that environment type "run" and when it crashes "ba".
If you haven't given up yet at that point, try "help".
If you have given up, type "quit".

elpresidente · 05-05-2009, 15:47

Quote:

Originally Posted by Zweistein

I had a look at the code and there's no doubt neonleonb found a bug.
In directory i7remux-0.1, file AviFile.cc, line 685 is "char id[4];".
The 4 should be increased to 5. Or if you're a purist, the sprintf
statements operating on it should be changed, but that's more difficult.

After this, run "make" and "su -c 'make install'" again.

If that still doesn't help, you could debug it:
- remove the -O2 in Makefile, line 29 (the line that set CXXFLAGS)
- run "make clean"
- run "make"
- run "gdb --args i7remux xyz" where xyz are the arguments you normally pass to i7remux
In that environment type "run" and when it crashes "ba".
If you haven't given up yet at that point, try "help".
If you have given up, type "quit".

Thank you. This worked for me.

Zweistein · 05-05-2009, 16:12

I doubt we'll hear from author takayuki again, so I uploaded i7remux-0.2.zip with the main fix (and without compiler warnings and a typo in the mencoder example in README).

I tried just one video and it seems to work well - insofar you can enjoy video on such a small screen.

elpresidente · 05-06-2009, 08:02

i7remux is working for me now but it seems to produce video with constant blocky effects. (I actually don't think this is from i7remux). I've been using the tutorial from http://www.linuxjournal.com/article/9919 as I cannot seem to get ffmpeg to work properly for me. Anyone have any idea what produces those blocky effects in the video (plays fine on the computer)?

daniel90 · 05-21-2009, 07:28

Thank you, it works very well for me!

@elpresidente:
Maybe you could try what worked for me:

Install ffmpeg via the package manager of your choice, then do the following:

ffmpeg -i <infile> -f avi -g 1 -b 384k -vcodec libxvid -vtag XVID -ab 128k -ar 44100 -ac 2 -acodec libmp3lame -s 160x128 -aspect 4:3 -r 15 <outfile>

<outfile> stands for a filename with the ending .avi

next do:

i7remux <infile> <outfile>

where <infile> has to be the <outfile> of the ffmpeg-step.
Then your video should be perfect for playing on the iAudio7.

ulrich_th · 05-21-2009, 08:24

Thank you for the programm it works perfect. I just added one thing, as dependeing on the source the pictures sometimes is distorted. By adding black pads this is solved:

Example:

ffmpeg -i <infile> -f avi -g 1 -b 384k -r 15 -s 160x108 -padtop 10 -padbottom 10 -vtag XVID -vcodec libxvid -ab 128k -ar 44100 -ac 2 -acodec libmp3lame <outfile.avi>

Please note that the size is counted WITHOUT the pads, the example gives you an output size of 108+10+10=128

Ulrich

corrish · 07-10-2009, 09:27

Hi!

To sum up all what was written and to make converting on linux more comfortable I write small script and instruction.

FIRSTLY.
I am not sure,but it have to be installed next packages:

Quote:

libxvidcore4 libxvidcore4-dev libxvidcore-dev libxvidcore mp3lame mencoder pyqt4-dev-tools build-essential autogen autotools-dev autoconf automake libtool

Then install i7remux fixed 0.2 version. Download it, unzip, then

Code:

$ cd /path/to/i7remux-0.2
$ ./configure
$ make
$ sudo make install

Then use my script. You can download it or copy from here.

You can download my script or copy from here:

Code:

#!/bin/bash
#
#!!!!Edit that directory if you want.Dont forget about "/" in the end
#!!!!NO SPACES!Only letters, numbers and dots in the name of path!
#!!!!There is "~/.tmp_video_dir/" by default. To make this dir enter that command: mkdir ~/.tmp_video_dir/
temp_dir=~/.tmp_video_dir/
#
in=$1
BASENAME=`basename "$in"`
PATH2FILE="`echo $1 | sed s/$BASENAME//g`"
temp_out=$temp_dir`cat /dev/urandom | tr -dc a-zA-Z0123456789 | head -c 10`.avi
#
#
#It makes a temp file in your temp dir with a random name for the first step of convertetion. 
mencoder "$in"  -ofps 12 -vf scale=160:128 -ovc xvid -xvidencopts bitrate=384:max_bframes=0:max_key_interval=1 -oac mp3lame -lameopts br=128 -o "$temp_out"
#Then convert temp video by i7remux.
#It makes video with same name, but with "_.avi" in the end.
i7remux $temp_out $temp_dir`basename "$in"`_.avi
#It moves result to dir, where video was
mv $HOME/.tmp_video_dir/`basename "$in"`_.avi "$PATH2FILE"
#Delete temp file
rm "$temp_out"
#If its ok, that will be popup
if [ -e "$1_.avi" ]
then
notify-send "Converting completed" "`basename "$in"`"
else
notify-send "Something is wrong" "`basename "$in"`"
fi

Then put it to ~/.convert_i7, for example.

Make:

Code:

$ chmod +x ~/.convert_i7

Then:

Code:

$ echo "alias video_to_i7='$HOME/.convert_i7'" >> $HOME/.bashrc"

Instead 'video_to_i7' you can write any you want.

USING:

Code:

$ video_to_i7 /path/to/input_video

After that, it will be a video with "_.avi" in the end of name.

P.S You can use it from Nautilus, if put script to ~/.gnome2/nautilus-scripts/
P.S.S. Programmers, make gui with progress bar,please. It will be cool.

All suggestions are welcome.
corrish from Russia, with love

05-05-2009, 14:59	#48
Zweistein Member Join Date: Mar 2008 Location: Belgium Posts: 37	I had a look at the code and there's no doubt neonleonb found a bug. In directory i7remux-0.1, file AviFile.cc, line 685 is "char id[4];". The 4 should be increased to 5. Or if you're a purist, the sprintf statements operating on it should be changed, but that's more difficult. After this, run "make" and "su -c 'make install'" again. If that still doesn't help, you could debug it: - remove the -O2 in Makefile, line 29 (the line that sets CXXFLAGS) - run "make clean" - run "make" - run "gdb --args i7remux xyz" where xyz are the arguments you normally pass to i7remux In that environment type "run" and when it crashes "ba". If you haven't given up yet at that point, try "help". If you have given up, type "quit". Last edited by Zweistein; 05-05-2009 at 16:15.

05-21-2009, 08:24	#53
ulrich_th Junior Member Join Date: May 2009 Posts: 4	thanks for i7remux - one further comment Thank you for the programm it works perfect. I just added one thing, as dependeing on the source the pictures sometimes is distorted. By adding black pads this is solved: Example: ffmpeg -i <infile> -f avi -g 1 -b 384k -r 15 -s 160x108 -padtop 10 -padbottom 10 -vtag XVID -vcodec libxvid -ab 128k -ar 44100 -ac 2 -acodec libmp3lame <outfile.avi> Please note that the size is counted WITHOUT the pads, the example gives you an output size of 108+10+10=128 Ulrich

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04-30-2009, 15:27	#46
Zweistein Member Join Date: Mar 2008 Location: Belgium Posts: 37	I've never used i7remux, but buffer overflow in sprintf usually means some text is longer than expected. Did you check the fix neonleonb suggested in post #43? You could try to shorten the names of files, or shorten any text you specify as an option such as ID3 tags.

05-05-2009, 16:12	#50
Zweistein Member Join Date: Mar 2008 Location: Belgium Posts: 37	I doubt we'll hear from author takayuki again, so I uploaded i7remux-0.2.zip with the main fix (and without compiler warnings and a typo in the mencoder example in README). I tried just one video and it seems to work well - insofar you can enjoy video on such a small screen.

05-06-2009, 08:02	#51
elpresidente Junior Member Join Date: Apr 2009 Posts: 3	i7remux is working for me now but it seems to produce video with constant blocky effects. (I actually don't think this is from i7remux). I've been using the tutorial from http://www.linuxjournal.com/article/9919 as I cannot seem to get ffmpeg to work properly for me. Anyone have any idea what produces those blocky effects in the video (plays fine on the computer)?

05-21-2009, 07:28	#52
daniel90 Junior Member Join Date: May 2009 Posts: 1	Thank you, it works very well for me! @elpresidente: Maybe you could try what worked for me: Install ffmpeg via the package manager of your choice, then do the following: ffmpeg -i <infile> -f avi -g 1 -b 384k -vcodec libxvid -vtag XVID -ab 128k -ar 44100 -ac 2 -acodec libmp3lame -s 160x128 -aspect 4:3 -r 15 <outfile> <outfile> stands for a filename with the ending .avi next do: i7remux <infile> <outfile> where <infile> has to be the <outfile> of the ffmpeg-step. Then your video should be perfect for playing on the iAudio7.