Raising the Audio Volume

[audi]

recently i came across a movies that has horribly low volume. i was wondering what are my options for raising the voulme without messing up the variable audio encoding. thnx

[Batman]

Download the Core Media Player, you can dynamically adjust volume by altering the "pre-amp" and the builtin "dyneq" filter.

[audi]

thnx for the info. is there a way to edit the videos themselves because i dont want to use a different media player for these movies. i thought there was a way to do it in vdub or something ?

[Batman]

Searching the forum or the doom9.org forum you may find way to do this using Virtualdub.

However, I find that using the Core Media Player is a much simpler solution. Aside from the ability to increase volume, TCMP has many other useful features as well as an intuitive interface.

[setarip]

"i thought there was a way to do it in vdub or something ?"


To increase volume of an already created .AVI

Load it into VirtualDub (or one of its variants).
Set "Video" to "Direct Stream Copying".
Set "Audio" to "Full Processing Mode".

Under the "Audio" tab, select "Compression" - Put a checkmark next to "Show all formats". Select the same format, frequency, and sampling rate (e.g. MPEG3, 44,100Hz, 128Kbps) as the original .AVI.

Under the "Audio" tab, select "Volume" and increase to the desired percentage.

Save with a new filename.

[audi]

how can i check what sample rate the file is and what would i select if it uses a variable bitrate

[_mutant_]

You can check the sample rate by loading the file in VirtualDub and clicking on File->File Information and look for Sampling Rate. If the video file has VBR encoded MP3 then what you should do is set Audio to full processing mode and Save WAV. Then attatch the wav to the avi (in VirtualDub) and set the compression level as you wish. You can attach the file by clicking on Audio->WAV audio and choose your extracted WAV file.

[audi]

holy crap, ok thats a lot of steps for such a simple thing. my sample rate is 48000 bit but that doesnt tell me the quality (ie like 128 or vbr) sooo are all these steps only for vbr or are do theyt work no matter what the quality. im sooo confussed can you make them a little more clear please. thnx

[_mutant_]

If the video file has VBR then VitualDub would say so when you open the file. If it doesn't give any error then your file has CBR and you don't need to extract the file - increase the volume straight away i.e. follow setarip steps.

[audi]

got it thnx, im following setarips steps and file info doesnt show me what the kbps of the file soo i just chose 128k but when i try to save the avi it gives me this "the requested audio compression is not compatible with the input"

[setarip]

""the requested audio compression is not compatible with the input"

This usually means that you've selected an audio frequency that is higher than the frequency of the original file's audiostream (e.g. You selected from among the 48,000Hz .MP3 settings, but the original audiostream is actually 44,100Hz). Simply try selecting from the next lower frequency (e.g. 44,100Hz) - or, from under the "Audio" dropdown menu, first select "Conversion" - and choose the frequency that you'd prefer (e.g. 48,000Hz) - and then select "Compression" (If necessary, put a checkmark next to "Show all formats) and select from among the proper (e.g. 48,000Hz) .MP3 bitrates...

[audi]

under the file info it says 48 000 but when i choose that it gives me that error. i have tried every other one i have maybe i have the wrong kbits or does that matter

[audi]

my basic question is in order to raise the volume do i need to match the kbps or just the sampling rate

[Enchanter]

Sampling rate has to be the same.

For the bitrate, you can use any values you like. However, note that using a lower bitrate will logically decrease the quality. Using a higher bitrate will present no benefit. Hence, it is recommended that you also use the same bitrate (for minimal loss of quality).