AUDIO from avisynth (or Virtualdub)

[poisondeathray]

It works fine here in winamp (vdub => file => save wav) . Note , ConvertAudioTo16Bit() is required for vdub

vid= ffvideosource("audio.mxf") 
aud= ffaudiosource("audio.mxf")  

left = GetChannel(aud, 1) 
right = GetChannel(aud, 2)  

both=mergechannels(left, right)  

audiodub(vid,both)

ConvertAudioTo16Bit()

[marcorocchini]

For the vdub error, add to the end of the script

ConvertAudioTo16Bit()

This do a big difference: with this line the output .wav file is openable but I hear a jerky audio.

I attach it [output.wav]

[marcorocchini]

maybe is a question linked to the interleaving settings?

[marcorocchini]

It works fine here in winamp (vdub => file => save wav) . Note , ConvertAudioTo16Bit() is required for vdub

vid= ffvideosource("audio.mxf") 
aud= ffaudiosource("audio.mxf")  

left = GetChannel(aud, 1) 
right = GetChannel(aud, 2)  

both=mergechannels(left, right)  

audiodub(vid,both)

ConvertAudioTo16Bit()

at the moment I don't have install it, however Vdub don't get me any error.
But if you give me your exactly ConvertAudioTo16Bit I can install as plugin.

I open your .wav but my winamp get me an error and don't open it.

While my output.wav is jerky

[poisondeathray]

Did you forget to disable the vdub audio filters from the last run ?

(make sure you use the .avs script only, don't do the downsample in vdub audio filters)

But if you give me your exactly ConvertAudioTo16Bit I can install as plugin.

It's an internal filter, comes with standard avisynth install

[poisondeathray]

I uploaded the wrong file above; that was a 32 bit per sample (without ConvertAudioTo16Bit)

This is the correct one. If you compare the waveforms in audacity, your audio looks different (looks choppy on the Left audio channel)

If you are using vdub to output audio, audio=>direct stream copy will disable the filters

[marcorocchini]

Did you forget to disable the vdub audio filters from the last run ?

mmm, there is not the flag on the "use advanced filtering" [see: AUset.bmp attached]
so I think Virtualdub don't use audio-filter. Or not? I'm not practically of vdub

(make sure you use the .avs script only, don't do the downsample in vdub audio filters)

so exactly what I have to do do disable the audio filters?

But if you give me your exactly ConvertAudioTo16Bit I can install as plugin.


It's an internal filter, comes with standard avisynth install

Analysing your code:

audiodub(vid,both)

ConvertAudioTo16Bit()


is there a way to do this functions with SounOut?

[marcorocchini]

doesn't

SoundOut(output = "wav", filename="c:\outputFile.wav", atype=1, format=0, autoclose=true, showprogress=true, overwritefile="yes")

work ?

it returns this error:

[poisondeathray]

To disable audio processing, Audio=>direct stream copy in vdub

Yes soundout works for me too; just add soundout() to the script. If you use default values a popup dialog will open up with options

[marcorocchini]

SoundOut(output = "wav", filename="c:\outputFile.wav", atype=1

Sorry but sometimes I'm a [pc.bmp]

but with type=1 this is the results:

[winamp.bmp]

but maybe SoundOut is the solution

[Selur]

a fast look at the documentation would have shown,... typo: atype=1 -> type=1
congratulation you found it

[marcorocchini]

To disable audio processing, Audio=>direct stream copy in vdub

Yes soundout works for me too; just add soundout() to the script. If you use default values a popup dialog will open up with options

Also I have try to use the "Direct stream copy" option but the outputted files remains jerky.

Is there a way to use SoundOut in the script so it generate directly a .wav stereo PCM 16bit 48Khz file, without the gui interface?

[Selur]

disable the progress.

[marcorocchini]

vid= ffvideosource("v:\automazioneclip\input\audio.mxf" )
aud= ffaudiosource("v:\automazioneclip\input\audio.mxf" )

left = GetChannel(aud, 1)
right = GetChannel(aud, 2)

both=mergechannels(left, right)

audiodub(vid,both)

ConvertAudioTo16Bit()

SoundOut(output = "wav", filename="c:\outputFile.wav", type=1, format=0, autoclose=true, showprogress=true, overwritefile="yes")

=
[winamp.bmp]

... type=1 and format=0 what means?

[poisondeathray]

To disable audio processing, Audio=>direct stream copy in vdub

Yes soundout works for me too; just add soundout() to the script. If you use default values a popup dialog will open up with options

Also I have try to use the "Direct stream copy" option but the outputted files remains jerky.

Is this the exact same audio.mxf clip ?

Was this the exact same script used ?

I don' t know how it's possible? Maybe you have a buggy ffms2 build ? If you preview the .avs script in vdub or mpc, does audio "sound" ok ?

[Selur]

> ... type=1 and format=0 what means?
-> http://avisynth.org/mediawiki/SoundOut#WAV.2FAIF.2FCAF_Script_Parameters:

[marcorocchini]

To disable audio processing, Audio=>direct stream copy in vdub

Yes soundout works for me too; just add soundout() to the script. If you use default values a popup dialog will open up with options

Also I have try to use the "Direct stream copy" option but the outputted files remains jerky.

Is this the exact same audio.mxf clip ?

Was this the exact same script used ?




I don' t know how it's possible? Maybe you have a buggy ffms2 build ? If you preview the .avs script in vdub or mpc, does audio "sound" ok ?

vid= ffvideosource("v:\automazioneclip\input\audio.mxf" )
aud= ffaudiosource("v:\automazioneclip\input\audio.mxf" )

left = GetChannel(aud, 1)
right = GetChannel(aud, 2)

both=mergechannels(left, right)

audiodub(vid,both)

ConvertAudioTo16Bit()



But result remains the same [outputfile.wav]: is jerky

[poisondeathray]

If even the preview of the script is bad (play the .avs script in a media player or vdub), then it's more likely a decoding issue, not an ENcoding issue.

Which version of ffms2 are you using ?

Try changing FFMS2 builds, try vanilla, 32bit 2.17
http://code.google.com/p/ffmpegsource/downloads/detail?name=ffms-2.17.7z

[marcorocchini]

Try changing FFMS2 builds, try vanilla, 32bit 2.17
http://code.google.com/p/ffmpegsource/downloads/detail?name=ffms-2.17.7z

[poisondeathray]

?????
Was that the one you were using already ?

or does it work ok now ?

[marcorocchini]

Try changing FFMS2 builds, try vanilla, 32bit 2.17
http://code.google.com/p/ffmpegsource/downloads/detail?name=ffms-2.17.7z

[marcorocchini]

Try changing FFMS2 builds, try vanilla, 32bit 2.17
http://code.google.com/p/ffmpegsource/downloads/detail?name=ffms-2.17.7z

it work perfectly

[Selur]

btw. I asked about ffms2 in post 20

[marcorocchini]

Thanks to all

[Selur]

btw.: Why not simply use ffmpeg for the whole thing?

ffmpeg -i h:\AUDIO.MXF -vn -filter "channelmap=1|2:channel_layout=stereo" h:\out.wav

see: http://www.ffmpeg.org/ffmpeg-filters.html#Audio-Filters

seems to work fine here:

Input #0, mxf, from 'h:\AUDIO.MXF':
  Metadata:
    uid             : 38d41b00-3164-05c1-0270-08004602023b
    generation_uid  : 38d41b00-3164-05c2-0270-08004602023b
    company_name    : SONY
    product_name    : Opt
    product_version : 1.41
    product_uid     : 060e2b34-0401-0103-0e06-012002010300
    modification_date: 2013-05-19 20:15:46
    timecode        : 00:46:20:01
  Duration: 00:00:06.68, start: 0.000000, bitrate: 62578 kb/s
    Stream #0:0: Video: mpeg2video (4:2:2), yuv422p, 720x608 [SAR 152:135 DAR 43], 25 fps, 25 tbr, 25 tbn, 50 tbc
    Stream #0:1: Audio: pcm_s24le, 48000 Hz, 4.0, s32, 4608 kb/s
Output #0, wav, to 'h:\out.wav':
  Metadata:
    uid             : 38d41b00-3164-05c1-0270-08004602023b
    generation_uid  : 38d41b00-3164-05c2-0270-08004602023b
    company_name    : SONY
    product_name    : Opt
    product_version : 1.41
    product_uid     : 060e2b34-0401-0103-0e06-012002010300
    modification_date: 2013-05-19 20:15:46
    ISMP            : 00:46:20:01
    ISFT            : Lavf55.7.100
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s1, 1536 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (pcm_s24le -> pcm_s16le)
Press [q] to stop, [?] for help
size=    1253kB time=00:00:06.68 bitrate=1536.1kbits/s
video:0kB audio:1252kB subtitle:0 global headers:0kB muxing overhead 0.007797%

Cu Selur

[marcorocchini]

btw.: Why not simply use ffmpeg for the whole thing?

ffmpeg -i h:\AUDIO.MXF -vn -filter "channelmap=1|2:channel_layout=stereo" h:\out.wav

see: http://www.ffmpeg.org/ffmpeg-filters.html#Audio-Filters

seems to work fine here:

Input #0, mxf, from 'h:\AUDIO.MXF':
  Metadata:
    uid             : 38d41b00-3164-05c1-0270-08004602023b
    generation_uid  : 38d41b00-3164-05c2-0270-08004602023b
    company_name    : SONY
    product_name    : Opt
    product_version : 1.41
    product_uid     : 060e2b34-0401-0103-0e06-012002010300
    modification_date: 2013-05-19 20:15:46
    timecode        : 00:46:20:01
  Duration: 00:00:06.68, start: 0.000000, bitrate: 62578 kb/s
    Stream #0:0: Video: mpeg2video (4:2:2), yuv422p, 720x608 [SAR 152:135 DAR 43], 25 fps, 25 tbr, 25 tbn, 50 tbc
    Stream #0:1: Audio: pcm_s24le, 48000 Hz, 4.0, s32, 4608 kb/s
Output #0, wav, to 'h:\out.wav':
  Metadata:
    uid             : 38d41b00-3164-05c1-0270-08004602023b
    generation_uid  : 38d41b00-3164-05c2-0270-08004602023b
    company_name    : SONY
    product_name    : Opt
    product_version : 1.41
    product_uid     : 060e2b34-0401-0103-0e06-012002010300
    modification_date: 2013-05-19 20:15:46
    ISMP            : 00:46:20:01
    ISFT            : Lavf55.7.100
    Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s1, 1536 kb/s
Stream mapping:
  Stream #0:1 -> #0:0 (pcm_s24le -> pcm_s16le)
Press [q] to stop, [?] for help
size=    1253kB time=00:00:06.68 bitrate=1536.1kbits/s
video:0kB audio:1252kB subtitle:0 global headers:0kB muxing overhead 0.007797%

Cu Selur

ffmpeg -i v:\automazioneclip\input\AUDIO.MXF -vn -filter "channelmap=1|2:channel_layout=stereo" c:\out.wav

=

[FFerr.bmp]

[marcorocchini]

Poison is there a way to generate directly the output.wav file by launching the script?

e.g.

VirtualDub.SaveWAV("o:temp.wav");

[Selur]

you are getting a virtual dub error when using ffmpeg -> you are doing something wrong,..
attached the out.wav that was created,... by the ffmpeg call,..

[marcorocchini]

you are getting a virtual dub error when using ffmpeg -> you are doing something wrong,..

shure, but is possible I don'have installed FFMPEG module in avisynth?

[poisondeathray]

nice selur - I think that is fairly new in ffmpeg . Audio handling used to be pitiful in ffmpeg

But there is still some audio difference? Compare with ffms2 and avisynth stereo mix

It shouldn't be, because ffms2 is based on ffmpeg....

I'm not expert on audio, but the avisynth mixed sounds "fuller" ?? There are waveform difference in audacity as well