Tagged Questions
0
votes
0answers
8 views
How can I forward two streams together in pavucontrol?
I'm trying to capture screen and audio with ffmpeg, and I want to record both microphone and computer output. I can choose from one of it in pavucontrol, but not both in the same time.
Any solution?
1
vote
0answers
47 views
Splitting audio channels using pulseaudio
My mission is record desktop using avconv (ffmpeg) + record microphone input + use sphinx program which also need the same microphone for voice control.
Now, the problem is that if I start sphinx ...
0
votes
0answers
53 views
ffmpeg recorded sound is slow
I have a problem with audio recording through ffmpeg.
My command is:
ffmpeg -f alsa -i pulse -vn -acodec libmp3lame -ab 256k capture.mp3
I have setup my audio card internal monitor to be used for ...
2
votes
2answers
296 views
How to convert AC3 to Flac and apply a delay?
I have a MKV video file. The audio track is ac3. I extracted the AC3 and now want to convert it to Flac. But I need to add a delay/offset of 150ms. The offset should be permanent; the actual duration ...
1
vote
1answer
221 views
Audio delays progressively when recording with ffmpeg
I am trying to record screencasts in Ubuntu 12.04, I have a working command, the audio sounds great and the video looks great. I have one issue though, the audio delays as the video goes on. At the ...
1
vote
2answers
1k views
how to format the ffmpeg command to record sound from my webcam
Using ffmpeg arecord -L, I am able to identify my Logitech usb webcam as:
hw:CARD=U0x46d0x821,DEV=0
USB Device 0x46d:0x821, USB Audio
Direct hardware device without any conversions
...
2
votes
1answer
421 views
Record and display Kinect audio and video via avconv
I'm trying to record audio and video from a Kinect using avconv but I seem to have trouble specifying the right options.
avconv -f video4linux2 -video_size 640x480 -c:v h264 -c:a ac3 -i /dev/video1 ...
3
votes
1answer
882 views
How do I record audio and video to a file from my webcam using ffmpeg?
This says to use /dev/dsp as the audio input. But I don't have a /dev/dsp I can find my webcam's mic in /dev/snd as /dev/snd/by-id/usb-Dynex_Dynex_1.3MP_Webcam-02
3
votes
1answer
625 views
FFmpeg or GStreamer for command line conversion of audio files?
I think I'm mixing up and I need some one to clarify things for me!
What is the differences between GStreamer and FFmpeg.
What I need is a command line to convert file(s) from one format to another.
...
3
votes
0answers
1k views
FFmpeg not recording audio during screen capture [closed]
I'm using the script below to run FFmpeg on Ubuntu 10.10. I followed these instructions to install FFmpeg & x264.
While ffmpeg does capture the screen it does not capture the mic audio. I've ...
5
votes
3answers
5k views
Add an audio file to and mkv video
I'm quite new to multimedia things, I'm trying to find a way to make nice screencasts, I've already been able to capture my desktop with ffmpeg:
$ ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -r 30 -s ...
