Can Ffmpeg, Mencoder, Handbrake Fix Fluctuating Audio Like VLC Can?

Hi

I am trying to fade in audio at 39 seconds into the video with existing audio.

It did work, the mp3 file fades in at 39 seconds, however the original audio from the video is silence or removed.

Here is the code I've use.

Code:

ffmpeg -i audio.mp3 -i test.mp4 -c:v copy -strict experimental -shortest -af 'afade=t=in:st=39' test.mp4

How can I fix this? Thanks

I just installed Ubuntu 14.04 on my Aspire E11 laptop. Everything works except sound. Nothing is muted. Alsamixer is in strange condition with no bars. Normally I find fixes by googling a question then finding then pasting commands into the terminal but all to no avail. I still have no sound. Any feedback would be appreciated.


Pulse audio controls show everything as normal with nothing muted.


This is the output forlspci -nnk | grep -i audio

$ lspci -nnk | grep -i audio
00:1b.0 Audio device [0403]: Intel Corporation ValleyView High Definition Audio Controller [8086:0f04] (rev 0e)
j

will encrypting my audio data and burning it on a cd/dvd be worth it since the other person can copy it onto there pc? such as audio files for court? I know it can be copied as long as the pc reads it. but can I protect or encrypt its data as not to be altered when copied? if it is possible please do tell thanks in advance.

I have just switched over from DVI to HDMI on a new monitor. I would like to feed the audio out over HDMI. Currently I get no audio over HDMI. Is there a setting to enable this? I am running Debian Wheezy with XFCE.

(Raspberry Pi Model B)
I have a really long audio file I'd like to play.
It's 10 hours long (white noise)

However, when playing it with mplayer it only gets to 4 hours before determining it's now end of file.

Code:

A:14360.8 ( 3:59:20.8) of 36080.8 (10:01:20.7)  7.2


Exiting... (End of file)

I know the audio file isn't corrupted past this point since I can fast-forward to 3:59:00:0 and let it play and it works fine (at least for the 2m I let it play)

I could in theory break up the file into 3.5 chunks to stay below the limit but I'm wondering if this is a inherent limitation of mplayer (didn't expect 4hr+) or if it's a bug.

Hello everyone.
The sound isn't working on my debian live usb.
I've installed pavucontrol hoping that this would turn on the sound somehow. But it hasn't.

The program is showing RS880 HDMI audio [Radeon HD 4200] as my output device.
The play back bar moves when I play video on youtube but there is no sound.
On the configuration tab, I've tried all the options under 'built-in audio' - but none of these seem to work.


aplay -l

Code:

 
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC892 Analog [ALC892 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: ALC892 Digital [ALC892 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: HDMI [HDA ATI HDMI], device 3: HDMI 0 [HDMI 0]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

Don't know why there are 3 playback devices...

lspci | grep -i audio

Code:

00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40)
01:05.1 Audio device: Advanced Micro Devices [AMD] nee ATI RS880 HDMI Audio [Radeon HD 4200 Series]

Not sure why there appears to be two sound cards...

On a Ubuntu site about a similar problem with the same sound card, they suggest creating /etc/asound.conf and adding code to it http://ubuntuforums.org/showthread.php?t=1647400
However, at this point, I'm a bit lost.
Can someone help please?

Hi I have an older model computer Dell Dimenion 9200 and installed Ubuntu 14.04 LTS...

I have no audio please help I am very new to Linux never tryed it till now...

Thank you for your help

Hi All,
I'm new to Linux and desperately need some help. I have a Samsung NP355E7C with Windows 8 OS. I have to use Hiltux for work but each time you boot into Hiltux there's no audio playback.I pugged in earphones still nothing. Please advise me on what to do.Newbie Style please.

Hi, for scientific reasons I need to record 8 audio channels simultaniously. The process has to be automated, so I want to run everything from commandline.
The device I'm using is a Presonus Audiobox 1818VSL. Ideally it should feed a RaspberryPi which stores it on a external harddrive. For my porpuse the samplerate doesn't really matter, but the file size should not not be to large. So 16 bit and 4 to 8 kHz would be great.
Up to now I've tried to use arecord with every posssible format, bitsize and samplerate, but nothing worked out so far. Obviously arecord missinterpretes the incoming signal, what results in pretty large and samplerate dependend noise.
Surprisingly everthings fine with the recording via audacity, which excludes the possibility of driver problems or something like that.
Does anybody have an idea how to solve this problem?
Thanks in advance

In August of this year I'm going to build a dedicated linux audio computer. I have been using ubuntu studio on my cheapo dell optiplex to learn linux and to get used to different programs and see which ones I need.

Lubuntu seems to use less cpu than ubuntu studio for the same program. I don't want any other programs on my system part from ardour, jack and a few misc MP3 players. All audio. It says that ubuntu studio is a low latency program, does this mean that Lubuntu isn't low latency? It seems that Lubuntu is running the program easier but I'm nervous to go with it because I fear it may be missing certain components to keep it less needy of cpu power.
What are your thoughts on this.