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

learn more… | top users | synonyms

0
votes
0answers
14 views

AAC to AC3 avconv failing on some Files

This excellent thread helped me get a script setup for converting my video files with 5.1 AAC sound to 5.1 AC3. However I'm having issues with some files avconv version 11.2-6:11.2-1, Copyright ...
1
vote
2answers
41 views

How do I make a video using my webcam? [duplicate]

I have an EEE PC 701 and want to record video using the built-in webcam. I have installed Lubuntu 14.10. I already have installed avconv and I want to use avconv.
0
votes
0answers
37 views

avconv and codec parameter problems with Youtube-dl [duplicate]

I've been recently having some problems downloading youtube playlists. I'm quite ignorant with Linux and can't quite figure this out. I'll download a playlist and it will usually work for a couple ...
10
votes
1answer
239 views

How can I create a video file from a set of jpg images? [duplicate]

I am attempting to create a video file from a set of JPG images. I have adapted the instructions given in this question but have experienced some issues. Firstly, not all of the required packages ...
1
vote
1answer
31 views

How to obtain frame rate of video as a fraction?

I am attempting to determine the exact frame rate of an H.264-encoded video. Using avprobe, I can obtain the following information: avprobe version 11-6:11-1, Copyright (c) 2007-2014 the Libav ...
0
votes
0answers
61 views

avconv throws error: Invalid pixel format string '-1'

Works on windows. This AVI was created by python OpenCV from the webcam. It plays fine in totem. I need to make it a smaller file size by video compression Running the following command fails in a ...
1
vote
2answers
65 views

.sh ffmpeg works manually, not with CRON

I make a movie from jpeg pictures with the script: #create movie ffmpeg -i /home/philippe/Dropbox/Public/Cheiron/day/%d.jpg -r 25 -q:a 5 -pix_fmt yuv420p ...
0
votes
1answer
51 views

Is it possible to convert only audio in video file using avconv?

I have downloaded a video file in AVI format and it seems to have A52 (AC3) encoded audio. VLC for iOS can't play this audio format. Can I convert audio of this video file to AAC or something more ...
1
vote
0answers
131 views

Error: [matroska,webm @ XXXXX ] max_analyze_duration reached

I am using this command to transcode from my DVB recordings to H.264: avconv -i "$1" -map 0:v -map 0:a -c:v libx264 -c:a copy "$1".mkv >> "$1".log 2>&1 $1 is the file. These are my ...
0
votes
0answers
67 views

desynchronized audio with video after recording a webcam (With avconv 11-6:11-1 )

Giving the following function, I recorded a Logitech C525 webcam stream with sound and that gives me an unsynchronized video with sound. It progressively delay till 15 seconds on 1h30... I have now ...
0
votes
0answers
37 views

Merge two audio sources with avconv

I am trying to record my desktop with avconv. It's working pretty good. My only problem is that one of my audio channels is too slow / downpitched and so has an offset. Adding an offset to the stream ...
1
vote
0answers
154 views

Avconv doesn't convert .MKV to .MP4 no errors output file 0KB

I understand that this is SIMILAR to questions asked before and using those posts I have actually got the file process going however when it finishes (with out errors mind you) the .mp4 is a 0KB file ...
1
vote
1answer
101 views

avconv creates zero byte file while trying to downsample mp4 video

I am having a time lapse video created using my phone that I am trying to downsample from 1080p to 640x480. According to this answer, I am using avconv command avconv -i input.mp4 -s 640x480 ...
0
votes
0answers
249 views

Merge multiple webm files using avconv

I have multiple webm files in one location, say as inside video folder. I have ubuntu system. I want to merge all my web.m files in one output.wem file. I have read about ffmpeg, but when I tried ...
0
votes
0answers
85 views

avconv - split file without ANY changes (my output video is rotated)

I'm trying to split a mp4 without making any changes at all, no aspect changes, no re-encoding, etc. However the output is rotated for some reason. I suspect avconv is trying to be smart and ...
2
votes
2answers
359 views

Best avconv settings for WebM video?

What are the best settings when converting, say, a .mp4 video to WebM? I have done some searching on here but nothing specific to what I need really. What I've been using: avconv -i input.mp4 -c:v ...
1
vote
1answer
70 views

Feeding avconv one image after another

I have recently taken a bunch of images to create a time-lapse video and using avconv and this was surprisingly easy (after looking up the right command). But now I want to send each image through ...
0
votes
1answer
26 views

Sync issue with avconv

I am screen casting and cannot get the audio and video to sync. I believe it is the video that is advancing because the audio seems to be running fine. The command I am using is: avconv -f pulse ...
5
votes
2answers
2k views

Avconv warning while downloading youtube video

I received this warning: Your copy of avconv is outdated, update avconv to version 10-0 or newer if you encounter any errors. while downloading a youtube video with youtube-dl -f 137+140. I am ...
1
vote
1answer
65 views

Output pal8 rawvideo with avconv

I'm trying to reduce the resolution of some raw video using avconv. The output must keep the same raw video format, as at a later stage I need to load it into another program which is extremely picky ...
0
votes
0answers
28 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 ...
1
vote
1answer
101 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, ∞ ...
4
votes
3answers
997 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
363 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 ...
2
votes
3answers
5k 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 ...
2
votes
0answers
604 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
327 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
99 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
104 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
43 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
155 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 ...
-3
votes
1answer
587 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
321 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
227 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
votes
0answers
58 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
votes
0answers
240 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
188 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
184 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
votes
0answers
24 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 ...
1
vote
0answers
135 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
341 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
72 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
281 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
240 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
224 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
4k 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: ...
4
votes
4answers
3k 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
262 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 ...
3
votes
1answer
2k 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
305 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 ...