extracting audio from RMVB file

[girish80]

hi,

can any body help me plz to extract audio from RMVB file.
how to extract audio from rmvb format.
i want to add new audio or delete audio from the movie
which software I can use to do this
plz help.

thanks in advance

[Alex_ander]

If you want it in wav, use EO Video. Set 'wav' template and original sample rate (get the value from MediaInfo utility), uncheck 'enhanced' output and use 'linear instead'. RealAlternative (or RealPlayer) should be installed on your PC. Sometimes audio stream is in AAC, then you need anything for its playback installed and EO will find it.

[celtic_druid]

http://forum.doom9.org/showthread.php?t=82222
I guess check out dtdrive for extracting and RMMuxer for replacing audio.

[girish80]

hi,

thanks celtic_druid


so i use GUImux it works great
but there is some problem with me audio is 2 seconds ahead, because first movie has 2 seconds extra video in start.
can I apply audio after 2 seconds or is there is another solution for this.
plz help me

[girish80]

plz help me

[guns1inger]

simplest solution is to add 2 seconds of silence to the start of the audio

[girish80]

plz tell me how can I do this.
i am new in this site.
plz tell me which software to use and how to use.

thanks in advance

[guns1inger]

Audacity is a free, pretty well featured audio editor. It can do this for you.

[girish80]

thanks
can you tell me how to do this.
it is quite difficult to oprate it.
just explain me how to silent audio for 2 seconds.

i appreciate that
thanks

[Alex_ander]

Usually you have to do it in a sound editor like SoundForge, GoldWave, CoolEdit or some free one. E.g. in SoundForge you can 'insert silence' in the beginning of the open audio file (it always opens as wav) and select its length when asked. Save the file, then encode to what you need.

[girish80]

actually i have one film with two copies in differet languages and both are in RMVB format
so i use GUIMux to split audio and video.so both audio are in RM format. using it I join first movie video with seconds audio.but first movie has 2 seconds extra video in start so audio is 2 seconds ahead.
i tried audacity but i didn't understand how to use it.
plz anybody explain me.



my mediainfo for the first movie is
File size : 649 MiB
Bit rate : 497 Kbps
Video #0
Codec : RealVideo 4
Info : RealVideo 9
Bit rate : 433 Kbps
Audio #0
Codec : RealAudio 7
Info : Real Audio G2/7 Cook (low bitrate)
Bit rate : 64 Kbps


and my mediainfo for the second movie is
File size : 472 MiB
Bit rate : 361 Kbps
Video #0
Codec : RealVideo 4
Info : RealVideo 9
Bit rate : 297 Kbps
Audio #0
Codec : RealAudio 7
Info : Real Audio G2/7 Cook (low bitrate)
Bit rate : 64 Kbps

[mgh]

You could try reencoding with Easy Real Media Producer
http://forum.doom9.org/showthread.php?t=82042
which has a setting for audio delay and then use RMMuxer to mix original video and new audio.
ERMP is the only place where i have seen audio delay setting for real media files.

[Alex_ander]

Is your target video format also RM?
Then you can try to first adjust the length of your video in RMEditor (free tool by Real Networks for cutting files, part of RealProducer Basic), demux the video stream and use it with the audio stream extracted from the other file. There are some RM files though RMEditor refuses to open.
Another way is to decode your audio to wav (EO Video free trial), then adjust delay in a sound editor, encode to RealAudio and mux with video.

[celtic_druid]

Should be a way to set a delay when muxing. Otherwise you could mux to mkv.

[guns1inger]

Open audacity. Click on Project -> Import Audio. Select your file and let it load. Line up the cursor at the 2 second mark Click on Project->Align and Move Cursor->Align with cursor. Your audio will shift in 2 second, effectively adding a 2 second delay.

[girish80]

in audiocity i apply all settings whatever you said.and save project on desktop as .aup file.
but how to save that rm file i didn't understand
after joining audio and video it remains as it is.

[guns1inger]

You need to export the audio as a wav file (file->Export). Try reading the help file or opening some of the menus. You really can't hurt anything by trying.

[girish80]

i tried but it didn't work for me
i want RM format output

[guns1inger]

You can't. You can get a wav or ogg format file (and if you have LAME installed, mp3). You have to then mux it back in using something that is RM aware. I haven't worked with rm files in a long, long time as they have always seemed a) low quality, and b) needing an extremely intrusive player.

Personally, I would be re-encoding the whole thing to a better format.

[girish80]

i use this rmvb format because it is very compact(small size) and it has good quality

[girish80]

anybody know
is adobe audition 2.0 supports rm file format or not?

[Alex_ander]

anybody know
is adobe audition 2.0 supports rm file format or not?

NO: http://www.adobe.com/support/techdocs/329174.html

True sound editors don't import Real Audio.

[girish80]

is vegas or any other software supports all type of file including rm?
is there is all in one software for audio or video?

[celtic_druid]

Why not just remux to mkv via mmg/mkvmerge and set the delay for the audio stream there? If anything it should give you even smaller output due to lower overhead.

[girish80]

thanks to all helpfull members,
after much efforts i done.

thanks again to all my helpers.