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Using avconv to stream live audio from in-line (alsa hw:0,0) over wireless access point to a client.

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http://stackoverflow.com – I have linaro 12.06 installed on my Miniand's Hackberry(https://www.miniand.com/products/Hackberry%20A10%20Developer%20Board). I have wireless access point up on the hackberry with the ssid of HACK I am using this command on the hackberry: avconv -f alsa -ac 1 -i hw:0,0 -acodec mp2 -b 64k -f rtp rtp://10.0.0.1:1234 So using my laptop I connected to the hackberry "HACK" and then I pulled up the terminal and typed in avplay -i rtp://10.0.0.1:1234 I am not getting any audio signal. Do you know what I am doing wrong? On the hackberry, If I run avconv -f alsa -ac 1 -i hw:0,0 -acodec mp2 (HowTos)

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Submitted by dadebian on 01/13/2013 – Made popular on 01/13/2013

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I've just ordered a Hackberry, and unlike my Raspberry Pi, I understand it can run Ubuntu, at least a server version. I see that someone is working on a headless version that he is using as a web server.

Is there any work being done to create a more general installation?

I'm trying to stream the video and audio a USB webcam using avconv (or ffmpeg) using just port 8080 over a network.

I can successfully stream audio using the following command:

Code: avconv -f oss -ar 8000 -ac 1 -i /dev/dsp1 -acodec mp2 -f rtp rtp://172.17.2.2:9090 and VLC will read it just fine, with maybe a 1 second delay.

I can successfully stream video using:

Code: avconv

Hello, everyone.

I'm trying to do a live stream of video from an NTSC output, live video that passes through a DVD player before being sent to my computer. I have a em28xx device, and audio recording works fine. The problem is with the video.

My problem is next: I have to record my desktop and voice using avconv ("ffmpeg"). I can do this using next command: avconv -f alsa -ac 2 -ar 44100 -i hw:0,0 -f x11grab -r 25 -s 1024x768 -i :0.0 -ab 192k output.flv At the same time, I have to use same microphone for voice control using pocketsphinx (pocketsphinx is speech recognition engine).

I want to create some screencast, I am using avconv (recent ffmpeg counterpart) for doing so.

This is the reference for command I used. I also referred the avconv manual pages. Due to some reason I am unable to record audio from microphone into the screencast.

What is the -f switch for audio from microphone? I tried -f jack but it gives an error message.

I'm trying to use avconv to capture my desktop and stream it on my webcam. Unfortunately I do not know what output format I should use to do this. The following is what I currently have.

avconv -f x11grab -s 1920x1080 -r 30 -i :0.0+0,0

Can someone point me in the right direction?

Thanks

I'm using aconv to extract audio from some videos, but some weeks ago, the MP3 seems to be ok, but when loaded into my iPhone 4, I can't fast forward or rewind the current track. It only happens with recent aconv created MP3's.

Any idea why?

avconv version 0.8.3-4:0.8.3-0ubuntu0.12.04.1

Here is the command I use

avconv -i video.mp4 -ab 192k audio.mp3

Thanks a lot!

In Feb 2011 I had a similar question: ffmpeg and libmp3lame produces bad audio quality? Now I'd like to know if it is possible to the get the original audio quality from a (flash) video? Every time I convert a video, the quality is worse than the original quality, not much worse but you can hear the difference.