Small Video Processing Guide - Revision history

Roderich: /* Part C) How to make small MPEG4 movies for your webpage including author and institution frames. */

2005-06-01T19:10:56Z

Part C) How to make small MPEG4 movies for your webpage including author and institution frames.

Roderich: /* Part C) How to make small MPEG4 movies for your webpage including author and institution frames. */

2005-06-01T18:55:37Z

Part C) How to make small MPEG4 movies for your webpage including author and institution frames.

Roderich: /* Part C) How to make small MPEG4 movies for your webpage including author and institution frames. */

2005-06-01T18:54:24Z

Part C) How to make small MPEG4 movies for your webpage including author and institution frames.

Roderich: /* Part C) How to make small MPEG4 movies for your webpage including author and institution frames. */

2005-06-01T18:52:47Z

Part C) How to make small MPEG4 movies for your webpage including author and institution frames.

Roderich: /* Part C) How to make small MPEG4 movies for your webpage including author and institution frames. */

2005-06-01T18:51:49Z

Part C) How to make small MPEG4 movies for your webpage including author and institution frames.

Roderich: /* Part B) How to retrieve movies from a digital camcorder. */

2005-06-01T18:50:22Z

Part B) How to retrieve movies from a digital camcorder.

Roderich: /* Part C) How to make small MPEG4 movies for your webpage including author and institution frames. */

2005-06-01T18:49:52Z

Part C) How to make small MPEG4 movies for your webpage including author and institution frames.

Roderich: /* Part A) Requirements */

2005-06-01T18:48:08Z

Part A) Requirements

Roderich: /* Part C) How to make small MPEG4 movies for your webpage including author and institution frames. */

2005-06-01T18:47:33Z

Part C) How to make small MPEG4 movies for your webpage including author and institution frames.

Roderich at 18:42, 1 June 2005

2005-06-01T18:42:02Z

New page

This is a Linux based solution. It has been tested under SuSE 9.3, and it should work under Debian as well if the system is properly configured.

== Part A) Requirements ==

1. Firewire interface

2. Disk space (around 13GB per hour of tape)

3. Software

For video capture and mpeg encoding, I installed the following packages (debian packages of similar name should be available). I would suggest to install mplayer and transcode first, and then you have a look to what could be missing.

dvgrab-2.0-1.pm
libiec61883-1.0.0-1
lame-3.96.1
mplayerplug-in-2.80-0
MPlayer-1.0pre7
w32codec-all-20050412-0
a52dec-0.7.4-3
libffmpeg0-0.4.9-3
faad2-2.0-0
lve-0.040322-0.
ffmpeg-0.4.9-3
mjpegtools-1.7.0-0
libfame-0.9.1-0
transcode-0.6.14-0
libraw1394-1.1.0-3

== Part B) How to retrieve movies from a digital camcorder. ==

1. Attach the camcorder with the firewire cable to your computer.

2. Turn in on, and insert a tape.

3. Become super user.

4. Execute (assuming it is tape 1 of your collection):

dvgrab --autosplit --format dv2 --opendml --size 0 --buffers 512 tape1-

5. The camera starts automatically, once the tape is finished stop the process.

Remarks: There can be problems, if

a) your filesystem (e.g. FAT32) does not allow for files bigger than 2GB,
b) your kernel does not recognize the camera (capture does not start),
c) if your harddisk is running out of space (1 hour tape is 13 GB approx.),
d) if your harddisk is slow (e.g. some external USB) it cannot handle the constant flow of data coming from the camera.

Normally, each scene goes in a separate file. However, sometimes, a scene is split by mistake into multiple files. These files you can merge with

avimerge -i file1 file2 file2 ... -o together.avi

Sometimes it can happen also that several scenes go into a single file. For this check

man avisplit

== Part C) How to make small MPEG4 movies for your webpage including author and institution frames. ==

1. Prepare author and institution frames (if applicable, ask Marco).

a) For swarm-bots, we have Photoshop templates (ask Roderich or Christos for the file if it was already created for you). Convert them with Gimp to the ppm format and name them author.ppm and end.ppm. The author frame comes right after the movie, the instituiton frame appears in the end.

b) If you have a single ppm file, you can make a movie out of it using the following script ppm2avi.sh. For this, ppmtompeg has to be installed.

Example:
To have the author frame shown for 75 frames (i.e., 3 seconds; 25 frames per second) execute:

sh ppm2avi.sh author 075

It is necessary to specify all 3 digits (from 001 to 999).

<nowiki>
#!/bin/bash
name=$1
time=$2
for I in `seq 1 ${time}`
do
if [ $I -lt 10 ]; then
cp ${name}.ppm ${name}00$I.ppm
else
if [ $I -lt 100 ]; then
cp ${name}.ppm ${name}0$I.ppm
else
cp ${name}.ppm ${name}$I.ppm
fi
fi
done

cp paramfile.txt p.txt
perl -pi -e "s/NNAAMMEE/${name}/g;" p.txt
perl -pi -e "s/FFRRAAMMEESS/${time}/g;" p.txt
ppmtompeg p.txt
rm ${name}???.ppm
rm p.txt
#transcode -i ${name}.mpeg -y ffmpeg -F dvvideo -Z 720x576 --encode_fields b -o ${name}.avi
transcode -i ${name}.mpeg -y ffmpeg -F mpeg4 -Z 480x384 --encode_fields b -o ${name}.avi
</nowiki>

You need to create the file paramfile.txt, name and timing are adjusted automatically by the script above:

<nowiki>
PATTERN I

PIXEL HALF

IQSCALE 10

PQSCALE 10

BQSCALE 10

RANGE 10

PSEARCH_ALG LOGARITHMIC
BSEARCH_ALG SIMPLE

OUTPUT NNAAMMEE.mpeg

GOP_SIZE 5

SLICES_PER_FRAME 1

BASE_FILE_FORMAT PPM

INPUT_CONVERT *

INPUT_DIR .

INPUT
NNAAMMEE*.ppm [001-FFRRAAMMEESS+1]
END_INPUT

FRAME_RATE 25

REFERENCE_FRAME DECODED
</nowiki>

2. Once you have the author and institution sub-movies, you just have to execute the following script for encoding the movies for your webpage:

<nowiki>
#!/bin/bash
for I in tape*.avi
do
basename=`echo $I | cut -d\. -f1`
echo ${basename}.avi
transcode -i ${basename}.avi -w 500 -x ffmpeg,avi -y ffmpeg -F mpeg4 -Z 480x384 --encode_fields b -o ${basename}_plain.mpeg --print_status 100
avimerge -i ${basename}_plain.mpeg author.avi end.avi -o ${basename}.mpeg
done
</nowiki>

Remarks:

a) You need all avi's in the same directory. The once from the tape start with tape, the others are called author.avi and end.avi
b) The size of these movies is only 480x384. This safes for sure space, and might even improve quality. MPEG4 will be standard in some future. It is based on DIVX as far as I understood. You can play the movies with mplayer, mplayer-plugin for mozilla.

@@ Line 75: / Line 75: @@
   #!/bin/bash
-  name=$1<br>
+  name=$1
-  time=$2<br>
+  time=$2
-  for I in `seq 1 ${time}`<br>
+  for I in `seq 1 ${time}`
-  do<br>
+  do
-   if [ $I -lt 10 ]; then<br>
+   if [ $I -lt 10 ]; then
-     cp ${name}.ppm ${name}00$I.ppm<br>
+     cp ${name}.ppm ${name}00$I.ppm
-   else<br>
+   else
-     if [ $I -lt 100 ]; then<br>
+     if [ $I -lt 100 ]; then
-         cp ${name}.ppm ${name}0$I.ppm<br>
+         cp ${name}.ppm ${name}0$I.ppm
-     else<br>
+     else
-         cp ${name}.ppm ${name}$I.ppm<br>
+         cp ${name}.ppm ${name}$I.ppm
-     fi<br>
+     fi
-   fi<br>
+   fi
-  done<br>
+  done
 transcode -i ${name}.mpeg -y ffmpeg -F mpeg4 -Z 480x384 --encode_fields b -o
-${name}.avi<br>
+${name}.avi
 You need to create the file paramfile.txt, name and timing are adjusted automatically by the script above:

@@ Line 74: / Line 74: @@
 It is necessary to specify all 3 digits (from 001 to 999).
-#!/bin/bash
+  #!/bin/bash
-name=$1
+  name=$1<br>
-time=$2<br>
+  time=$2<br>
-for I in `seq 1 ${time}`<br>
+  do<br>
      cp ${name}.ppm ${name}00$I.ppm<br>
- else<br>
+   else<br>
      if [ $I -lt 100 ]; then<br>
          cp ${name}.ppm ${name}0$I.ppm<br>
@@ Line 88: / Line 87: @@
          cp ${name}.ppm ${name}$I.ppm<br>
      fi<br>
- fi<br>
+   fi<br>
-done<br>
+  done<br>
 cp paramfile.txt p.txt<br>

@@ Line 75: / Line 75: @@
 <nowiki>
-#!/bin/bash<br>
+#!/bin/bash
-name=$1<br>
+name=$1
 time=$2<br>
 <br>

@@ Line 77: / Line 77: @@
 <nowiki>
-#!/bin/bash
+#!/bin/bash<br>
-name=$1
+name=$1<br>
-time=$2
+time=$2<br>
-for I in `seq 1 ${time}`
+for I in `seq 1 ${time}`<br>
- if [ $I -lt 10 ]; then
+ if [ $I -lt 10 ]; then<br>
-     cp ${name}.ppm ${name}00$I.ppm
+     cp ${name}.ppm ${name}00$I.ppm<br>
- else
+ else<br>
-         cp ${name}.ppm ${name}0$I.ppm
+     if [ $I -lt 100 ]; then<br>
-     else
+     else<br>
-     fi
+     fi<br>
- fi
+ fi<br>
-done
+done<br>
-cp paramfile.txt p.txt
+cp paramfile.txt p.txt<br>
-perl -pi -e "s/NNAAMMEE/${name}/g;" p.txt
+perl -pi -e "s/NNAAMMEE/${name}/g;" p.txt<br>
-perl -pi -e "s/FFRRAAMMEESS/${time}/g;" p.txt
+perl -pi -e "s/FFRRAAMMEESS/${time}/g;" p.txt<br>
-ppmtompeg p.txt
+ppmtompeg p.txt<br>
-rm ${name}???.ppm
+rm ${name}???.ppm<br>
-rm p.txt
+rm p.txt<br>
-transcode -i ${name}.mpeg -y ffmpeg -F mpeg4 -Z 480x384 --encode_fields b -o ${name}.avi
+transcode -i ${name}.mpeg -y ffmpeg -F mpeg4 -Z 480x384 --encode_fields b -o
 </nowiki>
@@ Line 106: / Line 108: @@
 <nowiki>
-PATTERN I
+PATTERN I<br>
-IQSCALE 10
+BQSCALE 10<br>
 </nowiki>

@@ Line 102: / Line 102: @@
 You need to create the file paramfile.txt, name and timing are adjusted automatically by the script above:
-BQSCALE 10<br>
+ RANGE 10
 . Once you have the author and institution sub-movies, you just have to execute the following script for encoding the movies for your webpage:

@@ Line 45: / Line 45: @@
 Remarks: There can be problems, if
-a) your filesystem (e.g. FAT32) does not allow for files bigger than 2GB,
+a) your filesystem (e.g. FAT32) does not allow for files bigger than 2GB,<br>
-b) your kernel does not recognize the camera (capture does not start),
+b) your kernel does not recognize the camera (capture does not start),<br>
-c) if your harddisk is running out of space (1 hour tape is 13 GB approx.),
+c) if your harddisk is running out of space (1 hour tape is 13 GB approx.),<br>
-d) if your harddisk is slow (e.g. some external USB) it cannot handle the constant flow of data coming from the camera.
+d) if your harddisk is slow (e.g. some external USB) it cannot handle the constant flow of data coming from the camera.<br>
 Normally, each scene goes in a separate file. However, sometimes, a scene is split by mistake into multiple files. These files you can merge with
@@ Line 57: / Line 57: @@
 man avisplit
 == Part C) How to make small MPEG4 movies for your webpage including author and institution frames. ==

@@ Line 143: / Line 143: @@
 Remarks:
-a) You need all avi's in the same directory. The once from the tape start with tape, the others are called author.avi and end.avi
+a) You need all avi's in the same directory. The once from the tape start with tape, the others are called author.avi and end.avi<br>
-b) The size of these movies is only 480x384. This safes for sure space, and might even improve quality. MPEG4 will be standard in some future. It is based on DIVX as far as I understood. You can play the movies with mplayer, mplayer-plugin for mozilla.
+b) The size of these movies is only 480x384. This safes for sure space, and might even improve quality. MPEG4 will be standard in some future. It is based on DIVX as far as I understood. You can play the movies with mplayer, mplayer-plugin for mozilla.<br>

@@ Line 12: / Line 12: @@
 For video capture and mpeg encoding, I installed the following packages (debian packages of similar name should be available). I would suggest to install mplayer and transcode first, and then you have a look to what could be missing.
-dvgrab-2.0-1.pm
+dvgrab-2.0-1.pm<br>
-libiec61883-1.0.0-1
+libiec61883-1.0.0-1<br>
-lame-3.96.1
+lame-3.96.1<br>
-mplayerplug-in-2.80-0
+mplayerplug-in-2.80-0<br>
-MPlayer-1.0pre7
+MPlayer-1.0pre7<br>
-w32codec-all-20050412-0
+w32codec-all-20050412-0<br>
-a52dec-0.7.4-3
+a52dec-0.7.4-3<br>
-libffmpeg0-0.4.9-3
+libffmpeg0-0.4.9-3<br>
-faad2-2.0-0
+faad2-2.0-0<br>
-lve-0.040322-0.
+lve-0.040322-0<br>
-ffmpeg-0.4.9-3
+ffmpeg-0.4.9-3<br>
-mjpegtools-1.7.0-0
+mjpegtools-1.7.0-0<br>
-libfame-0.9.1-0
+libfame-0.9.1-0<br>
-transcode-0.6.14-0
+transcode-0.6.14-0<br>
-libraw1394-1.1.0-3
+libraw1394-1.1.0-3<br>
 == Part B) How to retrieve movies from a digital camcorder. ==