How to convert a VOB file to avi?
Solution 1
To get rid of the subtitles I believe you can add the -nosub
switch, right after the .VOB file's name.
Example
$ mencoder Videos/Test/VIDEO_TS/VTS_01_1.VOB -nosub -nosound -ovc x264 \
-x264encopts direct=auto:pass=2:bitrate=900:frameref=5:bframes=1:\
me=umh:partitions=all:trellis=1:qp_step=4:qcomp=0.7:direct_pred=auto:keyint=300 \
-vf scale=-1:-10,harddup -o video.avi
Details
These incantations are often very dense so to break this one down a bit
- input file:
Videos/Test/VIDEO_TS/VTS_01_1.VOB
- output file:
-o video.avi
- no subtitles:
-nosub
- don't encode sound:
-nosound
- encode with given codec:
-ovc x264
list of other codecs
$ mencoder -ovc help
MEncoder SVN-r36171-4.8.1 (C) 2000-2013 MPlayer Team
Available codecs:
copy - frame copy, without re-encoding. Doesn't work with filters.
frameno - special audio-only file for 3-pass encoding, see DOCS.
raw - uncompressed video. Use fourcc option to set format explicitly.
nuv - nuppel video
lavc - libavcodec codecs - best quality!
libdv - DV encoding with libdv v0.9.5
xvid - XviD encoding
x264 - H.264 encoding
- x264 encode options:
x264encopts
- set mode for direct motion vectors:
direct=auto
- number of passes:
pass=2
- target encoding bitrate:
bitrate=900
- pre. frames used as predictors in B- and P-frames (def: 3):
frameref=5
- concurrent # of B-frames:
bframes=1
-
fullpixel motion estimation alg.:
me=umh
NOTE: umh - uneven multi-hexagon search (slow)
enable all macroblock types:
partitions=all
-
rate-distortion optimal quantization:
trellis=1
NOTE: 2 - enabled during all mode decisions (slow, requires subq>=6)
-
quantizer increment/decerement value:
qp_step=4
NOTE: maximum value by which the quantizer may be incremented/decremented between frames (default: 4)
quantizer compression (default: 0.6):
qcomp=0.7
- motion prediction for macroblocks in B-frames:
direct_pred=auto
maximum interval between keyframes in frames:
keyint=300
options after this are video filters:
-vf
NOTE: For the video filter switches, it's important that you use harddup
as the last filter: it will force MEncoder to write every frame (even duplicate ones) in the output. Also, it is necessary to use scale=$WIDTH,-10
with $WIDTH
as -1
to keep the original width or a new, usually smaller, width: it is necessary since the H.264 codec uses square pixels and DVDs instead use rectangular pixels.
scale=-1
-10
harddup
Solution 2
If you intend to use mplayer
, then you should try mencoder
(http://www.mplayerhq.hu). One of its best features is that the playback options you know from mplayer
behave pretty much the same way when encoding. Also, there's a lot of documentation and email threads covering exactly what you're asking:
- https://wiki.archlinux.org/index.php/MEncoder
- http://www.linuxquestions.org/questions/linux-newbie-8/how-to-convert-the-vobs-of-video_ts-to-a-single-avi-902280/
Related videos on Youtube
user3185306
Updated on September 18, 2022Comments
-
user3185306 over 1 year
I am trying to convert a VOB file copied from a DVD into an avi in Ubuntu 13.10. I tried
dvdrip
, which failed due to a frame count error or something. I tried acidrip as well, but it always choose an audio track I did not want to use. I would prefer to have a command line solution to create an avi with the following features:- usable with mplayer (i.e. using the step functions)
- with the subtitle as required (or no one at all)
- with the correct audio track
- with video and audio in sync
I tried some
ffmpeg
andavconv
commands and managed to create an avi, but the video and audio were completly out of sync. So what options should I use to have the VOB file converted to an avi file?I would appreciate some explanations on the suggested options!
Additional information:
-
The
ffmpeg
command gives the following output for the input fileInput #0, mpeg, from 'Videos/Test/VIDEO_TS/VTS_01_1.VOB': Duration: 00:04:53.32, start: 0.045500, bitrate: 29284 kb/s Stream #0.0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x480 [PAR 8:9 DAR 4:3], 7500 kb/s, 27.68 fps, 59.94 tbr, 90k tbn, 59.94 tbc Stream #0.1[0x82]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s Stream #0.2[0x80]: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s Stream #0.3[0x81]: Audio: ac3, 0 channels [buffer @ 0x15ca6e0] w:720 h:480 pixfmt:yuv420p
-
The following command
ffmpeg -i Videos/Test/VIDEO_TS/VTS_01_1.VOB -ss 589 -t 274 -sameq -acodec copy -ab 320k output.avi
for example resulted in a crash of my Ubuntu session.
-
The following command
avconv -i Videos/Test/VIDEO_TS/VTS_01_1.VOB -acodec copy -vcodec copy output.avi
for example resulted in the following error:
Application provided invalid, non monotonically increasing dts to muxer in stream 1: 374 >= 374 av_interleaved_write_frame(): Invalid argument
-
The following command
avconv -i Videos/Test/VIDEO_TS/VTS_01_1.VOB -f avi -c:v mpeg4 -b:v 800k -g 300 -bf 2 -c:a libmp3lame -b:a 128k output.avi
for example resulted in the following error:
Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height
-
The following command
avconv -i Videos/Test/VIDEO_TS/VTS_01_1.VOB -f avi -c:v mpeg4 -b:v 800k -g 300 -bf 2 -c:a ac3 -b:a 128k output.avi
for example seemed to work for some frames. But very soon I encountered many errors of the form
[ac3 @ 0x120d480] frame sync error Error while decoding stream #0:1 frame CRC mismatch
-
The following command
mencoder Videos/Test/VIDEO_TS/VTS_01_1.VOB -oac copy -ovc x264 -x264encopts bitrate=2500 -o output.avi
did some converting, but is (i) using subtitles although I did not want to use them (ii) got the audio wrong (audio and video is terribly misplaced) and (iii) seems to be slower than the movie actually goes (might take 2 hours for a 90 minute movie).
-
I tried to command given here (third post from Xeratul), but it stopped with the error
FATAL: Cannot initialize video driver.
-
I tried the suggestion made below to look at the mencoder page. This page suggests to use two passes:
the first reads informations about the movie, the second uses that information to encode.
but neither it is explained which information to extract nor how to use them in the second pass. So I used the following command:
mencoder Videos/Test/VIDEO_TS/VTS_01_1.VOB -nosound -ovc x264 \ -x264encopts direct=auto:pass=2:bitrate=900:frameref=5:bframes=1:\ me=umh:partitions=all:trellis=1:qp_step=4:qcomp=0.7:direct_pred=auto:keyint=300 \ -vf scale=-1:-10,harddup -o video.avi
which did convert the video, but with an unwanted subtitle. It is not clear at all how I can avoid using a subtitle.
-
Admin over 10 years
ffmpeg
is deprecated since long time ago, you are supposed to use its own successor:avconv
. -
Admin over 10 yearsSo how to use
avconv
then to convert VOB files to avi. The commandavconv -i Videos/Test/VIDEO_TS/VTS_01_1.VOB -acodec copy -vcodec copy test.avi
gave an errorApplication provided invalid, non monotonically increasing dts to muxer in stream 1: 374 >= 374 av_interleaved_write_frame(): Invalid argument
... -
Admin over 10 yearsthere is an example in the manpage for avconv, for decrypted VOB files
avconv -i snatch_1.vob -f avi -c:v mpeg4 -b:v 800k -g 300 -bf 2 -c:a libmp3lame -b:a 128k snatch.avi
try this -
Admin over 10 yearsThis gives an error
Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height
-
Admin over 10 yearsTry
mencoder yourvob -oac copy -ovc x264 -x264encopts pass=1:preset=veryslow:fast_pskip=0:tune=film:frameref=15:bitrate=3000:threads=auto -nosub -o /dev/null
thenmencoder yourvob -oac copy -ovc x264 -x264encopts pass=2:preset=veryslow:fast_pskip=0:tune=film:frameref=15:bitrate=3000:threads=auto -nosub -o video.avi
- took that in part from the Arch doc @dg99 linked. -
Admin over 10 yearsPlease see my trial #7: FATAL: Cannot initialize video driver.
-
user3185306 over 10 yearsThe provided links contain dozen of different examples and hundreds of options. It is not a clear and precise answer to my question.
-
dg99 over 10 yearsTrue, but I didn't write the answer to get reputation, I wrote it to help you. Do consider reading through some of the
mencoder
pages. There are several pirate groups that use onlymencoder
for all their work; that's how simple and powerful and automatable it can be. -
user3185306 over 10 yearsThank you very much for this well-explained example on how to get the video. Your suggested command seems to work perfectly for extracting the video. However, I do not have the audio now. If I use your command without
-noaudio
and with-oac copy
I get the audio, which is not in sync with the video. It is either displaced, at a different speed or both. Any suggestion how I can get also the audio correct? And what about multiple VOB files? How to pack the content into a single.avi
file (or other format)? -
slm over 10 years@Alex - just a thought, but I do not think you can simply do a
-oac copy
with a 2 pass, since you're re-encoding the video, you'll have to re-encode the audio along with it. As to "packing" them, the vob files should be merged liked this:cat *.vob all.vob
. Then useall.vob
in the mencoder cmd. There are other ways to do this too. -
Admin about 3 yearsPerforming this on the output of
vobcopy
results in an AVI file with the wrong language and missing subtitles.