1
vote
0answers
23 views

How to check .mp4 file is corrupted or not.

I am recording two different videos in the .mp4 format using ffmpeg command and after that combining them. But sometimes one of the video is get corrupted because of that it will affecting on the ...
0
votes
2answers
52 views

select ffplay audio out device

Hello I have an HDMI out and a USB sound card connected to pcduino running Ubuntu. When I run a video through ffplay, the audio out is selected by default as HDMI. How can I specify or force the out ...
1
vote
0answers
104 views

create video from jpg images using ffmpeg

I want to make short timelapse video using ffmpeg under ubuntu 12.04 LTS. I have a folder containing all images with names DSC_0000.jpg DSC_0001.jpg and so on. I found this question ffmpeg: create a ...
1
vote
0answers
76 views

I got a green overlay in my video when using multiply blend mode in ffmpeg

I´m trying to blend two videos with the multiply blend mode. But I got a green overlay in the resulting video. This is a image where are one frame of each input video and one frame of the resulting ...
1
vote
0answers
309 views

New FFMPEG; “[swscaler @ 0xa314080] Warning: data is not aligned! This can lead to a speedloss”

related to ; Create a screencast with ffmpeg: how to keep video+audio in sync? ffmpeg version 2.2.git Copyright (c) 2000-2014 the FFmpeg developers built on Mar 13 2014 16:08:45 with gcc 4.8 ...
0
votes
1answer
271 views

Create a screencast with ffmpeg: how to keep video+audio in sync?

I created some screencasts with ffmpeg. The PC I use has capable hardware (Intel Core i7-4930K Six Core 3.40GHz 12MB Cache, 32 GB RAM), but unfortunately it runs Windows 7. Because I want to do my ...
1
vote
1answer
181 views

FFMPEG stops converting

I've got Ubuntu 12.04 LTS, which runs Wowza Media Server, so I use FFmpeg as a transcoder for live streaming and JWplayer on my website. But ffmpeg always stops converting, and I have to input the ...
0
votes
0answers
269 views

FFMPEG - Stream discovered after head already parsed

I am trying to live transcode an RTMP stream to another RTMP HLS stream using the following command: ffmpeg -re -i rtmp://localhost/videochat/testing -c:v libx264 -c:a:0 libfaac -b:a:0 480k -f flv ...
1
vote
0answers
64 views

Setting up an Ubuntu Linux scalable web video cluster

I'm in the process of setting up what I hope will be a robust and scalable video processing cluster for a website I'm creating. Currently, I am processing video uploads with FFMPEG on the same web ...
1
vote
1answer
403 views

Linux Mint and Ubuntu ffmpeg don't do libx264 anymore?

seems Linux Mint 16 and Ubuntu current don't do libx264 with ffmpeg anymore. I have an old script from a few years ago that takes my recordings from Mythtv and converts them to the h264 format. --- ...
1
vote
0answers
316 views

exec ffmpeg not working for nginx-rtmp-module on AWS Ubuntu

I was trying out the nginx-rtmp module from https://github.com/arut/nginx-rtmp-module. While implementing the example for ffmpeg given in the link, my exec ffmpeg is not getting executed. My rtmp ...
0
votes
0answers
106 views

No sounds on Apple devices after encoding videos

I'm having a problem setting up a media server. Everything works just great except the sound of Apple devices, I'm not sure if that's something with "mute" on iOS or our codecs are just not compatible ...
1
vote
1answer
151 views

ffmpeg not using all cores

I just got my new server with two intel e5-2695 but I was shocked to see that ffmpeg or ubuntu doesn't utilize all cores. top while ffmpeg was running top - 23:35:25 up 2:41, 2 users, load ...
1
vote
1answer
478 views

FFmpeg - can't use -pattern_type option

I'm trying to use FFmpeg to create a video from a series of images, named snapshot-00001.jpg, snapshot-00002.jpg, and so on, by using the command ffmpeg -f image2 -r 10 -pattern_type glob -i '*.jpg' ...
0
votes
2answers
528 views

Completely uninstalling ffmpeg

I need help uninstall ffmpeg. The problem is, I can't remember what method I used to install it. But I've already done uninstalling through apt using sudo apt-get remove ffmpeg libav. Thing is, even ...
1
vote
2answers
691 views

can't find a mp3 codec on ubuntu

Trying to convert an audio CD to mp3. ubuntu says ffmpeg is deprecated and I should use avconv Here are the codecs after i installed all I could find in aptitude for libav that provided codecs. ...
3
votes
2answers
493 views

How can I speed up a video without pitch distortion in Linux?

What I'd like to achieve is getting the same effect as I get with (assuming 1.7x speed up) : mplayer -af scaletempo -speed 1.7 myvideo.mp4 This command gives me exactly what I want, but I need to ...
1
vote
0answers
55 views

Preserve text readability while encoding game screencasts

I have a bunch of (almost lossless) 3d game screencasts which now occupy considerable amount of my hdd space. I would like to reduce their size. Overall image quality isn't of great concern, except ...
3
votes
3answers
317 views

Why doesn't this for loop work?

This is on Ubuntu 12.04 I'm trying to figure out how to get ffmpeg to do a batch conversion of FLACs to MP3, recursively. If I cd into a directory and use for f in *.flac; do ffmpeg -i "$f" -c:a ...
2
votes
0answers
642 views

Playing and recording a live stream from another computer webcam using VLC/FFmpeg

I was trying lately to set a video server on one machine and play it in a differen machine, it works with me.. but the problem is that it always stuck and become jammed in the middle .. and it is very ...
2
votes
0answers
282 views

ffmpeg/avconv crashes when video frame isn't expected size

I'm capturing my webcam using ffmpeg/avconv, but I keep running into this problem: The v4l2 frame is 828212 bytes, but 829440 bytes are expected And then it crashes. It should just skip that frame, ...
1
vote
0answers
632 views

Cannot stream webcam using ffserver because of malloc error

I was following this tutorial RaspBerry Pi webcam and when I run the following command from root: $ ffserver -f /root/ffserver.conf & ffmpeg -v 2 -r 5 -s 640x480 -f video4linux2 -i /dev/video1` ...
4
votes
1answer
823 views

Resize and lower the bitrate of mp4

I wanted to execute the following command: x264 --level 30 --profile baseline --bitrate 900 --keyint 30 -o test.mp4 video01.mp4 --vf resize:720,480 But I get following output(error) raw [error]: ...
0
votes
1answer
1k views

How to configure ffmpeg on Ubuntu to convert 3GP file to PCM WAV?

I'm using Ubuntu 10.04. I need to convert a .3gp file to PCM WAV. I'm using ffmpeg for that. When it's installed from repository by using aptitude install ffmpeg it's installing some basic version of ...
0
votes
0answers
2k views

avconv and ffmpeg - drawtext filter text_w evaluates as 0 in Ubuntu Precise

I'm attempting to draw text onto a video using either the avconv or ffmpeg commands. When specifying x= for where on the final video to place the text, the 'text_w' value is evaluating to 0, rather ...
2
votes
2answers
8k views

Conversion from WMV to MP4 file fails with FFmpeg

When converting a WMV file to an MP4 file, it says [mp4 @ 0x989c160] track 1: could not find tag, codec not currently supported in container and Could not write header for output ...
1
vote
1answer
209 views

error linking ffmpeg library

While linking libavcodec.a , I see these errors: /usr/bin/ld: /usr/local/lib/libavcodec.a(fft_mmx.o): relocation R_X86_64_PC32 against symbol `ff_cos_32' can not be used when making a shared object; ...
1
vote
1answer
790 views

Aspect ratio of video sliced with FFmpeg unintentionally changes

I am trying to extract a small part from a larger video without changing the codecs, resolution or something else. Therefore, I use FFmpeg with the following settings. ffmpeg -vcodec copy -acodec ...
0
votes
1answer
85 views

Undefined reference to _aacplusEncOpen

Following is the copy of my config.log file-> http://pastebin.com/embed_js.php?i=UyTBTTZv Following is copy of configure file-> http://pastebin.com/embed_js.php?i=2c15zppN Additionally: As of now ...
1
vote
1answer
1k views

ffmpeg not using full CPU power

I have a Dell Precision 490 workstation, running Ubuntu 11.10, with two dual core Xeon 5160 CPUs (so 2 physical CPUs, with 2 cores each), which I am using to encode TV recordings (MPEG2) to H264 using ...
2
votes
2answers
555 views

“theora_encode_init failed” when converting FLV to OGG Theora video using FFmpeg

How can I use FFmpeg to convert a flash video (.flv) to an OGG Theora video to display in HTML 5? When I tried using ffmpeg -i dayinthelife.wmv -vcodec libtheora -acodec libvorbis -b 750k ...
0
votes
1answer
160 views

`Ffmpeg` aptitude install seems to break packages.

I tried to install ffmpeg because I thought/think it is needed for compiling OpenCV. However, when trying to do that I think I screwed up. How can I undo what I did? $ sudo aptitude install ffmpeg ...
1
vote
0answers
289 views

How to display and capture webcam stream at the same time?

This command works perfectly for saving a webcam stream to a file: ffmpeg -f alsa -i default -itsoffset 00:00:00 -f video4linux2 -s 1280x720 -r 25 -i /dev/video0 out.avi How would I simultaneously ...
4
votes
1answer
16k views

Using ffmpeg to encode a raw video to H.264 format

On a Ubuntu 10.04, I am trying to encode a raw video (YUV format) to a H.264 encoded video using below ffmpeg commands: ffmpeg -i input.mp4 output.h264 but I get an error saying Unsupported ...
0
votes
1answer
762 views

FFMPEG: how to add watermark to video?

My Platform: Ubuntu 10.10 + FFMPEG 0.5.3(I installed ffmpeg from source) I try to add Watermark to a .MOV video with FFMPEG 0.5.3 imlib2.so (Please note FFMPEG 0.6+ dont support imlib2.so, so I use ...
1
vote
2answers
258 views

ffmpeg command not working

I am running this command in Ubuntu and windows but I get the full length instead of 10 mins. I want to split it in 10 minutes. ffmpeg -i 2000.flv -ss "00:00:00" -t "00:10:00" -vcodec copy -acodec ...
0
votes
2answers
411 views

Why does installing LAME fail?

I want to install ffmpeg with mp3lame enabled following this tutorial. In step 2, I get the error libfaac is not found and in step 5, installing lame is giving the error in the log below. Why ...
1
vote
1answer
4k views

FFMPEG: AC3 to AAC conversion issues

Ok, this one has me scratching my head - and being a n00b isn't helping. In short, I had a script which I had perfected to covert MKV video to MP4. However, my Ubuntu 10.10 box bit the dust and ...
1
vote
0answers
476 views

Limit MJPEG stream bandwidth

I have a very simple webcam, but it supports MJPEG streaming. Webcam is in remote location, and that location internet connection has a very low upload speed. I can capture that MJPEG stream with ...
0
votes
3answers
4k views

Unknown encoder 'libmp3lame'

I'm using ffmpeg to convert my files but when I tried to convert WAV -> MP3 I got this error. It's surprising for me cause I installed this one yesterday. What could happen?
0
votes
1answer
1k views

ffmpeg fast motion webcam recording

I am trying to record every 12th frame from a webcam to a video file using ffmpeg to do fast motion (time delay) recording: ffmpeg -f oss -i /dev/dsp -r 2 -f video4linux2 -s 640x480 -i /dev/video0 -r ...
3
votes
1answer
1k views

How can I animate a series of png files in ubuntu 10.04?

I have a folder frames of alphabetically ordered .png files. I'm trying to animate them somehow from the command line. Is there a quick command to make a movie from these files? I'd appreciate any ...
4
votes
3answers
10k views

Rotate a video file 90 degrees using Ubuntu

I want to use Ubuntu and preferably standard packages such as ffmpeg to rotate a .3gp video file by 90 degrees in any direction. Preferably a command line or Python script. How can I do that?
0
votes
1answer
467 views

how to show lof info of ffmpeg with nautilus scripts?

Anybody knows how to take output log of ffmpeg, which may be like this this command working well no log out put ffmpeg -sameq -ss [start_seconds] -t [duration_seconds] -i [input_file] ...
3
votes
3answers
1k views

Watermarking videos on Linux

I want to add watermarking on to my FLV videos. Previously I used to do that using FFmpeg's vhook option but due to some problems I had to upgrade it to the latest SVN revision. This version of FFmpeg ...
1
vote
1answer
2k views

FFMPEG Segfault Solutions

I'm trying to convert a bunch of movies into h.264 mp4's using FFMPEG. These movies are sourced from various portable camcorders such as the Flip Mino HD and the Kodak ZI8. One issue I'm having with ...
3
votes
3answers
3k views

How can I encode a VRO file to an AVI file

I have a Canon hand held camera that writes video to a mini-dvd disc. The disc contains a file with a VRO extension which ffmpeg was quite happy to process into an AVI that I could then load into ...