`ffmpeg` is a free software project aimed at producing tools (libraries and programs) for handling multimedia data.

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8
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1answer
873 views

Merge two audio sources with x11grab, possible?

Currently I'm running with the following setup. ffmpeg \ -i http://pub1.di.fm:80/di_vocaltrance \ -f x11grab -s 1920x1080 -r 25 -i :0.0 \ -c:v libx264 -preset fast -pix_fmt yuv420p -s 1280x800 \ ...
4
votes
0answers
822 views

How can I prevent ffmpeg intermmittent faulure with `AVC: nal size` error?

I am trying to open the NASA HDTV video stream from ustream.tv directly in vlc. The problem that I have is that it only works sometimes. The command I am using is below: ffmpeg -i ...
3
votes
0answers
201 views

Libav: Find out the exact time that the first frame coming from an RTSP stream was dumped into a file

I am dumping an RSTP stream from a web camera into a file using avconv: avconv -f rtsp -rtsp_transport tcp -i rtsp://user@password/ 192.168.1.4/stream.cgi -t 100 -c:v libx264 -s 1024x768 -an ...
3
votes
0answers
1k views

Generating a slideshow under linux

Under Windows, one is able to generate a nice slideshow (crossfading between images, applying the Ken Burns effect on each image) on Windows using (Windows) Movie Maker. When I create a slideshow ...
2
votes
0answers
66 views

Encoding a video from Unix Timestamps + ms

I have a sequence of images that were taken from a camera that have been saved in a naming convention that contains the unix timestamp as well as milliseconds. For instance, 1333351808430.jpg (I typed ...
2
votes
0answers
60 views

How to define ffmpeg's path during compilation of another software?

I'm trying to compile an opensource software that needs bleeding-edge ffmpeg, so I successfully compiled ffmpeg, but I don't want to run make install as it's not easy to be removed after my tests. ...
2
votes
0answers
922 views

FFMPEG - Interpolate frames or add motion blur

I just watched the trailer for the hobbit, and a trailer for the avengers which both feature an increased framerate. A lot of the comments state that this isn't "true" 60fps since it was not shot at ...
2
votes
0answers
388 views

Convert images and animated gifs to video

I use the following FFMpeg command to convert images to video. for file in %N; do ffmpeg -framerate 15 -pattern_type glob -i '*.jpg' -vf ...
2
votes
0answers
252 views

how to install avxsynth on centos?

i am using centos 6 x86_64 and i am trying to install avxsynth for centos, but it always failed from link page i found that i have to install automake libtool MPlayer sudo apt-get install ...
2
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0answers
190 views

ffmpeg hardcode subs on flv

Giving up on trying to use videosub.js, I am now trying to hard code subtitles to the video file using ffmpeg. Have run into trouble with configuration files not found, when trying to hard code the ...
2
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0answers
453 views

Is there a way to mix between two RTMP streams (depending on which is up) using something like FFMPEG?

(Apologies about the question title, not quite sure how to word it) So I'm working on a turnkey streaming solution / server for a local LAN party, using the fantastic nginx-rtmp to handle incoming ...
2
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0answers
152 views

Is there any remote GUI for ffmpeg?

I'm looking for some software with both Linux and Windows versions that can remotely run FFMPEG commands on my Linux server. Just like what transmisson-remote-gui does for Transmission. In summary, I ...
2
votes
0answers
1k views

Rotating a video (ubuntu 12.04)

I have a video, shot on my android phone, which I want to rotate 90 degrees clockwise for computer viewing. Here's what I expect should work: ffmpeg -i infile.mp4 -vf "transpose=1" -an -vcodec mpeg4 ...
2
votes
0answers
505 views

avconv/ffmpeg output through /dev/ttyAMA0

I tried to pipe streaming video from video4linux2 webcam connected to a Raspberry Pi through /dev/ttyAMA0 to a computer using an Arduino as a intermediary. First of all, is it possible? Because I was ...
2
votes
0answers
2k views

Determining media format/encoding for DLNA system

How do you determine what parameters are needed by a DLNA renderer and server? I have a Samsung TV that is a DLNA renderer. I also have a Western Digital NAS running Debian and have Twonky and ...
2
votes
0answers
1k views

No way to record a live stream to WebM using ffmpeg?

I'm streaming from an mp4 source and so far I've managed to save clips as ogg (video: libtheora, audio: flac), but I'd like to save them in the WebM format. Unfortunately, WebM demands libvorbis for ...
1
vote
0answers
24 views

What's the canonical way to get individual stream size in a video file?

I have a video file. It contains a video stream, and a couple of audio and subtitle streams. I want to get the size of each of these streams. I've already looked at ffprobe/avprobe and mediainfo, ...
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0answers
47 views

How to set default subtitle with ffmpeg

I created a mp4 file from video, audio and .srt file. ffmpeg -i video.mp4 -i audio.m4a -i sub.srt -map 0:0 -metadata:s:v:0:0 language=eng -map 1:0 -metadata:s:a:0:0 language=eng -map 2:0 ...
1
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0answers
22 views

Miro player doesn't recognize subtitle from video encoded by ffmpeg

It was the first time I encoded a video on Ubuntu. I used ffmpeg to extract the video/audio, encode them and join with a subtitle to a new file. All these steps were fine. I used the following ...
1
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0answers
74 views

compile ffmpeg centos

I used this Guide http://trac.ffmpeg.org/wiki/CompilationGuide/Centos To install ffmpeg in my VPS with CentOS 6 64. But it was installed in /root/bin/ and I need to install it in usr/bin/ to run ...
1
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0answers
244 views

How to use sox or ffmpeg to detect silence intervals in a long audio file and replace them by zeros (aka suppress background noise)?

I have a long audio file that was created by concatenating many short files. I would like to detect silence between the speech segments (just a threshold is enough for my purposes) and replace them by ...
1
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0answers
191 views

Playback and simultaneous recording through external USB sound card

I've an external USB sound card (in my case it's a TerraTec Aureon 7.1 USB). I've looped the earphone-out to the line-in using a 3.5mm jack cable. I'm interested in starting the playback of a MP2 ...
1
vote
0answers
73 views

extracting codec information from rpt stream

I got a list of rtp streams in a list, those are tv channels from my internet provider. I would like to get information about the codec and get the channel names instead of ip addresses, precisely ...
1
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0answers
787 views

How to use a wildcard in FFMPEG?

Lets say I want every .mp4 file in a folder as an input file. How does one do that? It only reads it literal.
1
vote
0answers
326 views

Centos web camera, fast application for snapshot?

I'm using ffmpeg for taking snapshots / still images with web cameras. I'm going to use several web cameras to take photos at the same time or one after the other (timelapse). It's important for me ...
1
vote
0answers
623 views

How to record v4l webcam with ffmpeg? Cannot find a proper format for codec 'none'

Goal is to capture video from my old usb webcam (device 0733:0430). Trying to save video gives this error. (I've tried both ffmpeg and avconv.) Command ffmpeg -f v4l2 -i /dev/video2 -s 160x120 ...
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0answers
67 views

FFMPEG stream won't show up on Justin.tv

INRES="1366x768" # input resolution OUTRES="1366x768" # Output resolution FPS="35" ...
1
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0answers
759 views

avconv stops streaming after some time

I am using raspberry-pi board and a usb camera attached with it. i use avconv tool to capture live video from camera and streaming it on network using rtp protocol. My command on server(raspberry-pi ...
1
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0answers
156 views

screen capturing fails when trying second time by using ffmpeg

I'm trying to capture screen by using ffmpeg. ffmpeg -video_size 1024x768 -framerate 25 -f x11grab -i :0.0+100,200 output.flv It worked at first, but after I end the first capture by Ctrl + C, ...
1
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0answers
679 views

FFmpeg-php installation error on CentOS 6 x64 bit

I'm trying to install ffmpeg and ffmpeg-php. FFMpeg installed perfectly. When I try to install ffmpeg-php, I'm running ./configure and it's configured fine. However, when I run make it gives me the ...
1
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0answers
559 views

Compiling PHP-FFMPEG Extension

cd ffmpeg-php* phpize ./configure --with-ffmpeg=/usr/local/cpffmpeg make Then I end up with the following issues on my make: ... ... ... /usr/src/ffmpeg-php-0.6.0/ffmpeg-php.c:86: warning: ...
1
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0answers
262 views

unable to segment theora vorbis video file with ffmpeg

i am trying to split ogg video into 10 sec ogg video segments with ffmpeg segmenter. ffmpeg -i www/VideoPlayer/Videos/wr3libvorbis.ogg -map 0 -f segment -segment_time 10 -segment_list ...
1
vote
0answers
363 views

ffmpeg: error while running with libx264

Main code: ffmpeg -i 2269801.avi -threads 0 -vcodec libx264 -b 900k -acodec libfaac -ar 44100 -ab 96k -ac 2 earthgirlsareeasy1.mp4 [libx264 @ 0x16cdde10]broken ffmpeg default settings detected ...
0
votes
0answers
17 views

ffmpeg - generate video with more then 2 images and 2 audio

I have n images (2 < images < n) and 2 audio files I generate a video like below and it works: $ffmpeg -f image2 -pattern_type glob -framerate 1/10 \ -i '*.jpg' -i "concat:Q.mp3|R.mp3" ...
0
votes
0answers
18 views

How to re-encode file A.mp4 with the same settings as B.mp4?

I have a MP4 file with AAC audio and H264 video, let's call it B.mp4. I also have file A.mp4 with the same picture resolution, but: different FPS possibly different audio/video bitrate different ...
0
votes
0answers
26 views

gcc on debian - Matlab interferes with ffmpeg?

This is a quite confusing problem. I wanted to use youtube-dl and it stops with the following error message from ffprobe (ffmpeg): ffprobe: ...
0
votes
0answers
148 views

allow non-root user to run programs compiled by root in /root/bin

I just finished and installed ffmpeg installation on a centOS box via the guide made by ffmpeg themselves https://trac.ffmpeg.org/wiki/CompilationGuide/Centos As it turns out, ffmpeg was installed at ...
0
votes
0answers
74 views

ffmpeg configuration error

I downloaded ffmpeg and followed the README. First thing, ffmpeg needs to be configured. But executing configure (./configure) says ~/Downloads/ffmpeg-2.7.2 $ ./configure gcc is unable to create an ...
0
votes
0answers
76 views

ffmpeg libass CentOS 5.11

I just got a vps server and it has CentOS 5.11 and kernel 2.6.18. I need to install ffmpeg on it with --enable-libass. I have tried to compile but I'm having problems with libass because I have an old ...
0
votes
0answers
23 views

VLC exporting video frames uncontrollably, can't figure out how to stop it (possibly related to ffmpeg)

I have a very peculiar problem. Every time I open a video in VLC, in any format, it immediately begins exporting frames to my Pictures folder I tried deleting VLC and reinstalled a newer version but ...
0
votes
0answers
100 views

Running FFmpeg in While Loop

Here is my problem. I want to run many different multiple ffmpeg instances all in background and all in while true loop. I tried the following command but does not even work: (while true; do ...
0
votes
0answers
64 views

check media resolution if resolution is big ffmpeg it, if output is smaller than original delete the original else delete the output

I have my storage VPS filled with videos, and hoping I can free up some space, their resolution is pretty big so I decided to re encode them with ffmpeg to a smaller resolution, I am doing every thing ...
0
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0answers
523 views

Cygwin compilation error in ffmpeg: gcc is unable to create an executable file

While i am executing the below command in cygwin in ffmpeg source directory ./build_android.sh Here is the for ffmpeg in android I am getting this error message ...
0
votes
0answers
34 views

timout command is not timing out

I have a timeout command that is not timing out. user@db:~$ ps aux | grep 'timeout' user 4979 0.0 0.0 4440 628 pts/144 S+ 18:52 0:00 sh -c timeout 16 mycommand user 4980 0.0 ...
0
votes
0answers
930 views

How to record video from an old webcam using ffmpeg on Linux?

After couple of hours I'm finally ready to accept my absolute lack of knowledge in that topic and decided to post this question here. I've been trying to record video from an old external USB webcam ...
0
votes
0answers
97 views

error with Transcoding with ffmpeg activated by inotify

I’m trying to automatically transcode videos, that are begin uploaded constantly to a server. That is why I have came up with the idea of using inotify, by checking every moment for new files on the ...
0
votes
0answers
53 views

Black screen when splitting media files

When I run for i in $(ls *mp4); do ffmpeg -i $i -ss 0 -t 720.0 -vcodec copy -acodec copy $i-part1.mp4; ffmpeg -i $i -ss 720.0 -vcodec copy -acodec copy $i-part2.mp4; done; in a directory of ...
0
votes
0answers
281 views

Grab from a webcam

On Linux it is easy to use an audio or video grabbing device as input to FFmpeg: ffmpeg -f oss -i /dev/dsp -f video4linux2 -i /dev/video0 out.flv Today someone in kirupa forums said they ...
0
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0answers
150 views

To which audio format can I convert aac lost-free with ffmpeg?

Since I did not manage to get the audio work with ffmpeg -i video.mp4 -acodec copy -vcodec copy out.avi I'm searching for an audio format to which I can convert aac lost-free. Does such an ...
0
votes
0answers
938 views

ffmpeg: problems when copying the audio

When I run this ffmpeg -i video.mp4 -codec copy video.avi I get a broken audio: a crackling like a stuck LP. The input-audio is aac When I re-encode the audio like this ffmpeg -i video.mp4 -codec:v:0 ...