[Live-devel] option to make audio louder

[Tuan DN]

Now I know what to do next

Thanks you very murch


On Fri, Dec 2, 2011 at 12:20 AM, Warren Young <warren at etr-usa.com> wrote:

> On 12/1/2011 2:19 AM, Tuan DN wrote:
>
>>
>> Is there any atom of mp4 container which contain sound volume value?
>>
>
> Digital audio doesn't have volume any more than the transcript of a speech
> includes tone of voice.
>
> The closest thing I could think of to what you're asking for would be to
> somehow reference an audio effects filter from within the stream, so that
> the downstream decompressor does the audio processing you need to increase
> the audio level.
>
> A bit of quick Googling for QuickTime effects suggests that the 'geff'
> atom might be employed for this purpose, but that doesn't exist in the more
> tightly scoped MP4 format.  (See http://www.mp4ra.org/atoms.**html<http://www.mp4ra.org/atoms.html>
> )
>
> Ross is saying that you will probably have to decompress the audio, scale
> the samples, then recompress the resulting audio stream.  You're not going
> to find a byte to diddle in the stream to magically boost the volume.
>
> ______________________________**_________________
> live-devel mailing list
> live-devel at lists.live555.com
> http://lists.live555.com/**mailman/listinfo/live-devel<http://lists.live555.com/mailman/listinfo/live-devel>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.live555.com/pipermail/live-devel/attachments/20111202/f0855a16/attachment.html>