2
votes
1answer
35 views

How to change the volume of left channel using pulseaudio

I am recording the video using logitech camera and bluetooth microphone. Logitech can used for recording both audio and video. When I turn on bluetooth microphone in the middle of recording, it is ...
2
votes
1answer
64 views

avconv assert error mpah.frame_size when trying to convert WAV to MP3 under 14.04 [on hold]

My objective is to convert a WAV file to MP3 on 14.04 (64-bit). The wav file is "Signed 16 bit Little Endian, Rate 16000 Hz, Mono" and is known to good. It plays fine with aplay, also converts ...
0
votes
0answers
19 views

how can i avoid audio stutter in mpeg video's?

I have a couple of mpeg video files which were digitized from old betamax and VHS tapes, using Cyberlink Power Director on Windows XP. These videos play fine in Windows, on my old PC, and on my new ...
0
votes
1answer
84 views

Remove extra noise from ffmpeg video

I am using the following command to record the audio and video: ffmpeg -loglevel warning -y -f v4l2 -s 544x288 -i /dev/video0 -vstats -vstats_file '/home/2014-05-13T07-18-37/left_cam-stats' -f pulse ...
0
votes
0answers
28 views

how to fix Build_one :function error?

I'm trying to separate audio and video from video file. After searching on the internet I came to know it can be done using FFMPEG. Now I need to build FFMPEG library file for my Android application ...
1
vote
0answers
31 views

Remove audio from mp4 file [duplicate]

I have a video file i.e. video.mp4 it contain both video and audio. I want to remove the audio from this mp4 file. I tried using the following ffmpeg command: ffmpeg -i /home/Desktop/video.mp4 ...
0
votes
0answers
9 views

audio track framerate 25(PAL)-->23,976(NTSC) [duplicate]

here's my problem: I need to change the framerate of the audio track of one of my films from 25 to 23,976 fps (to mux it with a full hd version); I used to make use of handbrake, re-encoding the film ...
0
votes
0answers
57 views

change audio framerate 25(PAL)-->23,976(NTSC)

Here's my problem: I need to change the framerate of the audio track of one of my films from 25 to 23,976 fps (to mux it with a full hd version); I used to make use of handbrake, re-encoding the film ...
0
votes
2answers
81 views

FFMPEG Audio not recording

I'm having some issues recording sound with FFMPEG on Ubuntu. ffmpeg -v verbose -f x11grab -y -r 60 -s 1920x1080 -i :0.0 -vcodec mpeg4 -f alsa -i pulse -ar 44100 -acodec libmp3lame -ab 192k -ac 2 ...
0
votes
0answers
19 views

No audio with avconv (formery ffmep)

I cannot get any program that uses avconv (such as Openshot, or VLC), to play any sound on videos (or even mp3). This is after trying to uninstall and reinstall libav-tools, and even after upgrading ...
0
votes
0answers
29 views

Editing AVI Metadata

I know there are questions like this one but I tried other's solutions but they did not work for me. This 'works': ffmpeg -i input.avi -metadata title="Moonshine" -metadata author="Moonshine" ...
0
votes
0answers
58 views

Damaged mp4 file - can't extract audio

I've been trying fruitlessly for a while now and gotten so frustrated I finally succumbed and decided to ask for help. I ask though because this file is VERY important, it is also important I know ...
0
votes
1answer
116 views

DVD Audio Playback Silent - how to find codec

I'm utterly baffled by this but I'm sure the fix must be simple - I can play DVDs fine on my ubuntu machine but I have just bought a new DVD and there is no sound. The sound works on all other DVDs ...
0
votes
0answers
118 views

.ape files not playing in Banshee, VLC, Quod Libet

I am on Linux 13.04, trying to run an ape file in Banshee Media Player. However, the song stops about 8 seconds in. The same thing happens in VLC and Quod Libet. However, the file I'm testing runs ...
2
votes
2answers
3k views

How to do screencasting (desktop recording) with high quality audio and video?

I have googled around and found all the usual solutions. None of them work for me. First of all, I want to make high quality recordings. Second, I use JACK audio (PulseAudio is completely ...
1
vote
0answers
140 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 ...
2
votes
2answers
644 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
2answers
4k 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
2answers
877 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
2k 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
904 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
8k 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 ...