Tagged Questions

Video and audio converter, can also capture live from an audio/video source.

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0
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0answers
10 views

flac created with avconv is too big

When I compare the file sizes of flac files created with avconv and compression level 2 (command line argument) and the size of flac files which I created with Foobar2k, which uses the original ...
0
votes
1answer
29 views

Downloaded MMS stream has very long duration

I have successfully downloaded a one minute long stream: $ mimms -t 1 mms://stream.polskieradio.pl/program3 out.asf mms://stream.polskieradio.pl/program3 => out.asf 744.45 kB / ∞ B (12.00 kB/s, ∞ ...
3
votes
3answers
127 views

Convert all .ape files to .flac in different subfolders

I was trying to convert some .ape files to .flac files using avconv on command line; obviously, avconv is not the main point here; its syntax is pretty straightforward, avconv -i inputApeFile.ape ...
1
vote
1answer
32 views

How to specify flac compression level when converting with avconv?

I am trying to convert some aac files to flac files, because aac is not supported by another device I use. After some multiple attempts to find a solution, searching the Internet, I finally read that ...
0
votes
2answers
79 views

How to install avconv with libfdk_aac on Ubuntu 14.04?

How to install or compile avconv with libfdk_aac on Ubuntu 14.04 ? I am also ok with comparable aac codecs e.g. http://wiki.hydrogenaud.io/index.php?title=Fraunhofer_FDK_AAC Currently I am trying ...
0
votes
0answers
40 views

avconv/ffmpeg - audio slowly drifts out of sync, original is in sync

Almost all of the instructions I've read about drifting audio sync is regarding live screen recording. I'm simply trying to truncate useless video from the end of a raw DV file in an effort to prepare ...
-1
votes
1answer
38 views

Making video Using Still Images [duplicate]

I am using avconv to convert images into video, but i am facing some issue in it that is. I have thousands of images in a directory and named as video_clip_0_0_0_0_0_0_0_0_09_0_102.jpeg and images did ...
0
votes
1answer
22 views

Screen cast out of sync with audio

I have been trying to record my screen for some YouTube videos I make but on Ubuntu whenever I run the command avconv -s 1600x900 -f x11grab -i :0.0 -c:v libx264 -f pulse -i default -c:a aac ...
0
votes
0answers
31 views

How can I split raw DV files captured by Kino?

I tried using avconv but it throws an error, and I'm not sure what it's telling me: techmachine@techmachine:/media/techmachine/Backup$ sudo avconv -i video.dv -vcodec copy -acodec copy -ss 00:00:00 ...
3
votes
0answers
23 views

Where can I find XviD preset files for avconv?

I cannot seem to find any XviD preset files for avconv. I looked into /usr/share/avconv but there is none. I also googled alot but cannot seem to find any. I managed to compile one by looking at the ...
1
vote
0answers
56 views

avconv gives error when trying to split a file in since 14.04 upgrade

I use the following command to split a file, but since an upgrade from 12.04 to 14.04 it gives an error. The resulting file only contains audio, no video. avconv -i cam.mp4 -ss 00:14:00 -t 00:28:00 ...
0
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0answers
34 views

avconv: prepend video with title screen

I am trying to generate a blank titles screen and prepend it to an existing video. My titles are generated with the below command: avconv -filter_complex "color=0x000000:320x240:24 [in]; [in] ...
-3
votes
1answer
138 views

how can i convert a 9.5 gb mkv file to mpg or avi with avconv? [duplicate]

I have a 9.5 GB MKV file, and I want to convert it a mpg or avi file using AVConv. How can I accomplish this?
1
vote
1answer
86 views

Error opening file using avconv conversion from mp4 to mov

I'm trying to convert an .mp4 file to .mov file. The command is as below. avconv -i test1.mp4 kkk.mov .mov file is created but there is an error opening the file. Below is the error. "Stream ...
0
votes
1answer
74 views

Howto overlay subtitles onto video using avconv?

I am using the following script to overlay a dvdsub stream and a video stream; avconv -i input.mkv -i subtitles.sub -filter_complex "[0:v:0][1:s:0]overlay[vid]" -map "[vid]" -s hd720 -sws_flags ...
0
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0answers
23 views

avconv: can convert from mp4 to mp3 but mp3 won't rewind on mp3 player. Goes back to beginning instead

I'm using the following to convert mp4's to mp3's. They convert with no errors and play well, FF but when I RW it goes straight back to the beginning. Blockquote avconv -i MP4FILE.mp4 -b:a 128k ...
0
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0answers
132 views

How to replace libav with FFMPEG on pcduino borad (ARM)?

Hi I am currently working with a pcduino board. I was trying to run ffmpeg but realized that I had install avserver instead. So I looked at this link How to replace avconv with (the real) ffmpeg and ...
1
vote
2answers
72 views

How do I fix the duration of frames when using avconv?

So far, I'm doing something like this avconv -i "image%d.png" -f image2 - delay 100 -s:v 1280x720 ./filename.mpg but the delay does not seem to change anything.
1
vote
0answers
89 views

“invalid pixel format string” when encoding a sequence of .pngs with avconv

I have a sequence of .pngs and I want to encode them into a video using the h264 codec. After a bit of googling I found that the proper incantation for doing this is avconv -f image2 -i ...
0
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0answers
15 views

Downgrading avconv to 0.8.12 from 9.13

I'm maintaining a fairly large video editing program that relies heavily on avconv - I've recently migrated the processing to an Amazon EC2 instance, and while most things are working out reasonably ...
0
votes
0answers
55 views

avconv to use hardware acceleration

I have a radeon card and would like avconv to use hardware acceleration if possible. I have the proprietary driver-updates from the additional drivers tool.
0
votes
1answer
156 views

avconv slideshow from images - first image appears for split second

I am currently using the following command to generate a slideshow from all jpg's in the current directory: avconv -r 1/5 -f image2 -i %03d.jpg -r 25 -c:v mpeg2video output.mpg The command almost ...
0
votes
0answers
29 views

Audio is lost while converting a video file using avconv

I was converting a file from avi to mp4 using avconv: avconv -i 'Supernatural S01E10 HDTV.avi' -c:v libx264 -c:a copy -y 'Supernatural S01E10 HDTV.mp4' The file has the following properties: ...
1
vote
0answers
163 views

avconv pipe to v4l2loopback device

I use v4l2loopback module to create two video device. My intention is to pipe output from primary video device to these two virtual devices. I can do that using ffmpeg: ffmpeg -f video4linux2 -s ...
0
votes
0answers
131 views

Error(?) when converting WAV to M4A with AVCONV

I have ripped some songs from a CD to wav files with the command, cdparanoia -vB I then convert these wav files to ALAC format with the command, for f in ./*.wav; do avconv -i "$f" -c:a alac ...
1
vote
1answer
123 views

avconv incorrect length when splitting video

avconv used to work fine for me in 13.10, but now it doesn't. I'm using it in the same way as before, for example: avconv -ss 1971 -t 2216 -i x.mp4 -vcodec copy -acodec copy -metadata track="7" ...
0
votes
2answers
2k views

How may I burn srt subtitles to video with avconv?

System : Xubuntu 13.04 x64 I've found usage of this functionality in ffmpeg here ffmpeg -i video.avi -vf subtitles=subtitle.srt out.avi but it doesn't work. I get an error No such filter: ...
3
votes
4answers
1k views

How can I batch convert mkv files to mp4?

At moment I use the single video command of: avconv -i File_name1.mkv -codec copy File_name1.mp4 To change format but I need a method to do this for over 400 videos what would the batch command ...
5
votes
1answer
231 views

Scripting with variables from file

I have several videos on my PC that I would like to shorten. For instance I have a 30 sec video where I want to have the section from sec 15 to 20 (a 5sec video). To cut this, I use avconv. avconv -i ...
0
votes
1answer
747 views

Convert .mp4 to .ogg keeping only the audio, with Ubuntu 14.04 and avconv

How to convert a .mp4 file (downloaded from YouTube) to .ogg? (keeping only the audio) When Ubuntu had ffmpeg I could just do ffmpeg -i file.mp4 -acodec vorbis file.ogg Now we have to do without ...
2
votes
1answer
186 views

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

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
2answers
360 views

Webm videos converted with avconv not working properly

I'm converting mp4 videos to webm with the following command: avconv -i INPUT.mp4 -c:v libvpx -qmin 10 -qmax 42 -maxrate 500k -bufsize 1000k -threads 2 -c:a libvorbis OUTPUT.webm Am I doing ...
3
votes
2answers
758 views

avconv on multiple threads

Is it possible to run jobs on multiple processor or threads to speed up avconv? Is there a feature in progress, if not I wonder why?
0
votes
1answer
417 views

Encoding ogg vorbis sound file with avconv using same codec as Audacity

For a website I am working on, I am trying to encode wav files to ogg (vorbis) using avconv. It seems like in some browsers, the resulting ogg files are not decoded properly. However, I figured out ...
0
votes
2answers
470 views

avconv set really slow frame rate

I have just a couple of images ( 20-40 ) and I want make movie which plays with frame rate 1-2 fps ( i.e. each image should be visible for 0.5-1 second ) ... so the whole movie should take ~20-40 ...
0
votes
0answers
98 views

Twitch streaming on ubuntu isn't working

So, i've been trying to stream to twitch on Ubuntu for awhile now, and i've tried quite a few streaming scripts for ffmpeg and avconv and also SimpleScreenRecorder's streaming function without ...
3
votes
3answers
149 views

Transcoding old mjpeg avi's to h264

I have a collection of private jpeg’s and avi’s (mjpeg format) recorded with Olympus u5000 camera. As mjpeg is not a suitable format for playing in xbmc, I would like to transcode it to h264 format. ...
5
votes
2answers
1k views

Very slow conversion with avconv (libav) - Trusty Tahr 14.04?

Yesterday I installed the latest Kubuntu release 14.04. So I meet a little problems with the media conversions. The old FFmpeg is finally replaced with avconv which is in the libav-tools library. Till ...
1
vote
1answer
2k views

(Ubuntu 14.04) High Quality .OGV conversion to either .AVI or .MP4

Unfortunately, none of the solutions found on this post helped: RELATED: Video converter: ogv to avi (or another more common format) I have a High Quality animation (specifically, from Diablo 3) on ...
0
votes
0answers
30 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 ...
1
vote
2answers
2k views

How to convert mpeg to mp4?

I would like to convert an MPEG TS file to MP4. Is there software for Ubuntu that I can buy that just works? In 13.10 I did the following with success: Edit the file with DVB-CUT and export to MPG. ...
1
vote
0answers
20 views

Are my choices really limited to stream sound or hear sound?

I followed the instructions at How can I use PulseAudio virtual audio streams to play music over Skype? in order to load-module sinks. I can stream to my twitch feed no problem. My problem is that I ...
0
votes
1answer
67 views

Can't stream both audio sources, only mic works.

Why does the following code not stream both audio sources? #!/bin/bash INRES="1920x1080" OUTRES="1280x720" FPS="20" QUAL="medium" STREAM_KEY=$(cat ~/.twitch_key) avconv -g 0 \ -f x11grab -s ...
0
votes
1answer
154 views

Filter's inputs in avconv

I'm going to crop some desktop regions and overlay them on the scene. avconv -f x11grab -s:v 100x100 -r 30 -i :0.0+10:10 -f x11grab -s:v 100x100 -r 30 -i :0.0+200:200 -f alsa -ac 2 -i pulse -c:a ...
0
votes
0answers
56 views

How to manage connection lost with avconv

what I am trying to do is record the stream of an IP cam using avconv. It works great, but I need the recording to finish in the event that the connection to the camera was lost, either because the ...
1
vote
1answer
1k views

avconv - Extract one video frame and repeat it

I'd like to repeat one frame from a source video to output. I've tried the following avconv -ss 00:20:00 -i INPUT_VIDEO -t 0.5 -vsync 1 -an -r 1 -vcodec libx264 VIDEO_1F avconv -i VIDEO_1F -t 10 -r 1 ...
2
votes
0answers
374 views

Stream Webcam via command line to vlc

I've spent the morning doing searches and can't find any tutorials on how to stream my webcam(with sound) so I can watch it remotely on VLC. I have avconv installed, and can stream to twitch just ...
4
votes
2answers
456 views

avconv - Filter drawtext doesn't work

I' going to add some text to a video segment using -vf but it doesn't work. Here is what I tried avconv -ss 00:00:20 -i input.mp4 -t 00:00:10 -vcodec copy -acodec copy \ -vf ...
0
votes
1answer
246 views

When streaming / recording my desktop, how do I also record the audio?

I'm running the latest Ubuntu on my PC and want to stream my whole desktop to a TV screen connected to a Raspberry Pi running XBMC. So far I manage to grab the stream wit avconf. Dumping it in a ...
0
votes
1answer
52 views

Screencast with avconv cuts off last 5 seconds of audio

I'm trying to record a screencast using avconv (installed from official repo). All seems to work OK, except one thing: Always, the last 5 seconds from my mic audio are dropped from the final video. I ...