Transcode Video

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Revision as of 18:00, 29 November 2011 by Wagnerrp (talk | contribs) (at least reference the thing below the first party utilities)

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How to transcode video for iPod, iPhone, PSP, PDA, or other portable devices. There are a lot of different ways to transcode video for use on portable devices, both automated and manually. Some of these methods may be out of date and no longer work.


nuvexport is a utility that can be run from the commandline. You select the output format, the videos you'd like to transcode, and it does it for you. It does not automatically transcode for you, however

See Nuvexport.


mythTV can automatically transcode videos after recording them using mythtranscode. It can only transcode to RTJPEG and MPEG4, however, which may not be what your device requires.

See Mythtranscode.


Mythbrake is a user job script that transcodes recordings to MKV files using Handbrake.

See Mythbrake.


See Mythnuv2mkv.


See Nuv2avi.

3gp Video

Transcoding video to 3gp format for mobile phones

See Transcoding into a 3gp Video.


a perl script that can be installed as a User-Job to automatically transcode video for the iPod. May work for other portable devices as well.

Other iPod exporting Scripts

Here are some alternatives to video2ipod

OTA HDTV to DVD with AC3 stream copy transcode Script


# Step 1, generate DVD resolution file from HDTV content, preserving AC3 audio streams
# produce less log output with the -quiet switch
/usr/bin/nice -19 /usr/bin/mencoder -quiet -oac copy -of mpeg \
-mpegopts format=dvd:tsaf -vf scale=720:-3,harddup -ovc lavc -lavcopts \ 
vcodec=mpeg2video:vbitrate=4000:keyint=15 /myth/tv/$1 -o /myth/tv/$1.tmp

if [ "$?" -ne "0" ]; then
   echo "mencoder died"
   /usr/bin/nice -19 rm /myth/tv/$1.tmp

# Step 2, replace orig HDTV file with transcoded DVD file
/usr/bin/nice -19 mv /myth/tv/$1.tmp /myth/tv/$1

# Step 3, clean up MPEG2 sync issues and using mythtranscode.  Output is a .tmp file.
/usr/bin/nice -19 /usr/bin/mythtranscode --mpeg2 -i /myth/tv/$1 --showprogress

# Step 4, replace DVD file with cleaned DVD file
/usr/bin/nice -19 mv /myth/tv/$1.tmp /myth/tv/$1

# Step 5, update index in database
/usr/bin/nice -19 /usr/bin/mythcommflag --rebuild -f /myth/tv/$1

# OPTIONAL Step 6, Flag commercials on final file
/usr/bin/nice -19 /usr/bin/mythcommflag -f /myth/tv/$1

#Only thing to sort out is updating the MySQL DB for the new filesize after transcoding
# to reflect the new file size. Any ideas on how to do this easily??

# You can do something like this:
SIZE=`ls -l $MYTHDIR/$1 | awk '{print $5}'`

mysql --user=(your username) --password=(your password) mythconverg << EOF
update recorded set filesize = '$SIZE' where basename = '$1';