HOWTO Create a DVD video disc: Encoding the movies

From LinuxReviews
Jump to: navigation, search

Contents

[edit] Encode from a misc video format

[edit] Using transcode

You will have to choose between NTSC and PAL.

  • Most of Europe & Australia use PAL.
  • America use NTSC.

You can refer to the list of TV formats used in different countries around the world at http://mightylegends.zapto.org/dvd/tv_standards.html if you are unsure what format you should use.

[edit] Encode PAL

transcode \
   -i yourvideofile1.avi \
   -y ffmpeg \
   --export_prof dvd-pal \
   --export_asr 3 \
   -o yourvideofile1 
   -D0 \
   -b224 \
   -N 0x2000 \
   -s2 \
   -m yourvideofile1.ac3 \
   -J modfps=clonetype=3 \
   --export_fps 25

[edit] Encode NTSC

transcode \
   -i yourvideofile1.avi \
   -y ffmpeg \
   --export_prof dvd-ntsc \
   --export_asr 3 \
   -o yourvideofile1 
   -D0 \
   -b224 \
   -N 0x2000 \
   -s2 \
   -m yourvideofile1.ac3 \
   -J modfps=clonetype=3 \
   --export_fps 29.97


The above will produce 2 files 'yourvideofile1.m2v/yourvideofile1.ac3' which have been split from the original into video & audio files.

The video(.m2v) has now been re-encoded into a DVD compliant mpeg2 format & the audio(.ac3) has been encoded into an AC3 DVD audio stream.

[edit] The Aspect Ratio

The above transcode lines will convert & encode to an aspect ratio of 16:9.

If an aspect ratio of 4:3 is desired then replace --export_asr 3 with --export_asr 2 in your transcode line.

Dvdauthor will only work correctly on files with aspect ratios of either 4:3 or 16:9.

[edit] Convert 2-channel stereo audio track to 5.1 surround sound (optional)

Using the above transcode lines will result in a 2-channel stereo audio track.

Depending on the brand of 5.1 surround sound entertainment system, this may result in the audio only being present on the centre & sub channels.

Find out if the original .avi/.mpg file already contains a 5.1 AC3 audio track: Kode:

mplayer -vo dummy -identify original.avi 2> /dev/null | grep "5.1 ("

A positive output would look something like: Kode:

AC3: 5.1 (3f+2r+lfe) 48000 Hz 384.0 kbit/s

If it does, then extract it using 'tcextract' (part of the transcode package) & use it in your mplex line below instead. In this way, front to rear panning will not be lost on true 5.1 audio tracks, & no added conversion is necessary:

tcextract \
   -d2 
   -i matrix.avi \
   -a0 \
   -x ac3 \
   | tcextract 
   -d2 \
   -x ac3 \
   -t raw > matrix.ac3

If it doesn't, then using the existing 2-channel audio track, it is possible to create a 5.1 surround sound track so that the audio will be present on all 6 channels (front to rear panning is lost).

See here: http://mightylegends.zapto.org/dvd/dvdauthor_howto_surround.html

[edit] Combine the new audio & video files into one DVD mpg

mplex -f 8 -o yourvideofile1.mpg yourvideofile1.m2v yourvideofile1.ac3

Test your files in mplayer or xine. eg. mplayer -vo xv matrix_dvd.mpg




180px-DVD-Logo-small.jpg

DVD Definition

HOWTO Create a DVD video disc

Filesystem

Burn

edit
Personal tools
hardware tests
Categories
Privacy policy
linux events
ipv6
Networking
IPv6

Search:

linux newz | random page | poetry | free blog