I started recording with OBS and it seems to have recoded my audio in the following format. I'm ultimately just trying to compress it into a pretty small file (24Kbit/s, 24000Hz, Mono).
If I try to just keep it raw PCM and use the conversion option in virtualdub to downsample, switch it to mono, or convert it to 8bit or 16bit, it gives me an error:
I did see this thread from several years ago which was a bit hard for me to follow. I assume much of the discussion is irrelevant since it seems my audio is just PCM. Plus, virtualdub can play the audio fine, and I can edit my video fine as long as I don't compress. https://forum.videohelp.com/threads/...ith-VirtualDub---------------------------
VirtualDub Error
---------------------------
Cannot convert audio: the source audio format is not supported (must be 8-bit or 16-bit PCM).
I did get it to compress using some online converter just for sanity. Any idea how to get VirtualDub to get it to work?
I'm using an older version presumably (build 44282 from 2020), but I don't expect this would've changed much.
File info:
From VirtualDub file information:
From a free online tool (Maztr):Audio:
Sampling rate: 48000Hz
Channels: 2 (Stereo)
Sample precision: 32-bit float
Compression: PCM (chmask 3)
Layout: 5774 chunks (1.37s preload)
Length: 378379200 samples (2:11:22.90)
Min/avg/max/total frame size: 318976/524252/524288 (2956088K)
Data rate: 3072 kbps (0.00% overhead)
File Summary:
Full Details:sox WARN wav: wave header missing extended part of fmt chunk
Channels : 2
Sample Rate : 48000
Precision : 24-bit
Duration : 00:02:01.50 = 5832000 samples ~ 9112.5 CDDA sectors
File Size : 46.7M
Bit Rate : 3.07M
Sample Encoding: 32-bit Floating Point PCM
File Detail
sox WARN wav: wave header missing extended part of fmt chunk
Samples read: 11664000
Length (seconds): 121.500000
Scaled by: 2147483647.0
Maximum amplitude: 0.614301
Minimum amplitude: -0.511002
Midline amplitude: 0.051650
Mean norm: 0.036291
Mean amplitude: -0.000067
RMS amplitude: 0.056860
Maximum delta: 0.548948
Minimum delta: 0.000000
Mean delta: 0.010106
RMS delta: 0.017150
Rough frequency: 2304
Volume adjustment: 1.628
Channel Detail
sox WARN wav: wave header missing extended part of fmt chunk
Overall Left Right
DC offset -0.000076 -0.000076 -0.000059
Min level -0.511002 -0.511002 -0.508057
Max level 0.614301 0.614301 0.583200
Pk lev dB -4.23 -4.23 -4.68
RMS lev dB -24.90 -24.91 -24.89
RMS Pk dB -15.71 -15.71 -15.71
RMS Tr dB -54.62 -54.62 -54.62
Crest factor - 10.82 10.25
Flat factor 0.00 0.00 0.00
Pk count 2 2 2
Bit-depth 32/32 32/32 32/32
Num samples 5.83M
Length s 121.500
Scale max 1.000000
Window s 0.050
Try StreamFab Downloader and download from Netflix, Amazon, Youtube! Or Try DVDFab and copy Blu-rays!
+ Reply to Thread
Results 1 to 3 of 3
Thread
-
-
Use virtualdub2.
Menu Audio, full processing mode, conversion 16 or 8 bit.
Tested with a 32 bit PCM. -
That's what I'm trying. VirtualDub2 build 44282. I might try a different build later, but I doubt a different build would change it.
Is it because it's float?
I get the error if I try to do any conversion (or compression) on this audio file (or any audio file captured by OBS). Video compression works.
Similar Threads
-
VirtualDub Capture Pin Compression Settings
By DMS in forum Capturing and VCRReplies: 9Last Post: 3rd May 2024, 12:17 -
Which audio formats has better compression not losing quality ?
By Aug in forum Newbie / General discussionsReplies: 12Last Post: 2nd Aug 2022, 16:38 -
Blackmagic audio trouble
By Mockingbird in forum Capturing and VCRReplies: 26Last Post: 16th Jun 2022, 19:54 -
Trouble capturing Video8 to Virtualdub
By Tacoman in forum Capturing and VCRReplies: 28Last Post: 31st Jan 2021, 15:16 -
Trouble opening AVS in Virtualdub or Avidemux
By Groundhog in forum Video ConversionReplies: 17Last Post: 7th Oct 2020, 01:24