0
votes
1answer
55 views

Downmix drops low frequency channel

Using this file, I have noticed a problem with FFmpeg downmixing. If I run a command such as ffmpeg -i 51.flac -ac 2 outfile.flac It will have identical result as ffmpeg -i 51.flac \ ...
0
votes
1answer
586 views

Use ffmpeg copy codec to combine *.ts files into a single mp4

I've got a bunch of ts segments described by a single index.m3u8 file: index.m3u8 segment1_0_av.ts segment2_0_av.ts segment3_0_av.ts segment4_0_av.ts segment5_0_av.ts I know they ...
3
votes
1answer
197 views

ffmpeg - different input and output duration

I have strange duration issue when converting videos from mp4 to flv. Also there is a different "start_time", what is that? What does start_time means? input duration - 0:00:29.577000 input ...
1
vote
1answer
153 views

Getting batch file to auto rename input file

I'm trying to create a batch file to process videos and rename the output file automatically. I've got this so far: @ECHO OFF d:\audio\ffmpeg.exe -i "%~1" -vcodec copy -acodec libvo_aacenc -af ...
2
votes
1answer
1k views

FFMPEG converting media type aswell as relocating MOOV atom

I have found this line online ffmpeg -i input.mp4 -c:a copy -c:v copy -movflags faststart output.mp4 Which takes an input, and copies the audio, video and sets the MOOV atom to the beginning in an ...
0
votes
2answers
207 views

How to batch insert same clip scene at the beginning of multiple videos?

Well, it has been a few days researching on a suitable auto or semi-automatic way of mass merging files this way. Basically, what I want to achieve is inserting the same clip, before a bunch of other ...
4
votes
1answer
309 views

How to properly concaternate two audio files together?

I ripped two Blu-rays and I'm trying to combine the audio from both into one file. I've decoded it from DTS-HD MA to Wave64, and I used avisynth to remove the black screen audio (4 seconds) from the ...
0
votes
1answer
291 views

How can I upgrade ffmpeg in CentOS 6.x

At first, I've downloaded ffmpeg 0.6.5. and it works. But when I'm trying to use '-vf' option, Terminal said there's no such command. So I asked this on Super User and someone said that the cause is ...
1
vote
1answer
72 views

Can't type in CLI after running ffmpeg

I get a strange behaviour after running ffmpeg in console and piping its output to mplayer. After I close mplayer's window or I close ffmpeg with Ctrl+C sometimes I can't type anything in that console ...
1
vote
0answers
28 views

How do i convert a transparent .mov-file to an mp4 file overlayed on a background-image using FFMPEG [duplicate]

I'm trying to convert a mov file with the following specs: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mov': Metadata: major_brand : qt minor_version : 537199360 ...
0
votes
1answer
312 views

Extracting images from video in 1 minute intervals

I would like to extract images from a video Exp01.avi, the video is 24fps and 25 minutes long. I want the images to be extracted from the video after every 1 minute interval. Please someone tell me ...
3
votes
1answer
745 views

Using ffmpeg with decimal wildcard

I have a folder with PNG images of the following naming scheme: IMG_0423.png IMG_0424.png ... IMG_0509.png I would like to make an MP4 movie from these images, but I get an error message that ...
1
vote
4answers
853 views

Batch process ffmpeg?

Given an AVI encapsulated video with WMA2 audio and MP4 video how do I pass-through the video, convert the audio to MP3; then re-encapsulate the entire file into an AVI? ffmpeg -i "foo bar.avi" ...
0
votes
0answers
129 views

Superimpose videos with FFmpeg

We’re trying to edit a video with FFmpeg. One of our videos has an alpha channel and we want to superimpose this above another video. example: Video 01: Start frame 1 end frame 200 Video 02: ...
1
vote
1answer
437 views

VP8 and WebM, not working in ffmpeg-php

I need a help with ffmpeg-php and Ffmpeg. Ffmpeg: ffmpeg version 1.0.git built on Oct 6 2012 01:54:50 with gcc 4.4.6 (GCC) 20120305 (Red Hat 4.4.6-4) configuration: --enable-gpl --enable-libmp3lame ...
3
votes
1answer
7k views

How to cut at exact frames using ffmpeg?

I'm trying to use ffmpeg to cut video files at precise times. The ffmpeg help shows an option -timecode_frame_start to specify the starting frame but I am unable to get this command to work. The ...
0
votes
0answers
1k 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 ...
1
vote
1answer
3k views

ffmpeg: extract frames and get their exact timestamps

I'm trying to extract frames from a variable framerate video every 5 seconds and get the exact timestamps of each frame extracted. This is what I have so so far: -i inputfile -vstats_file vstats.log ...
2
votes
2answers
1k views

ffmpeg works on terminal not with PHP exec

If I execute a ffmpeg command from terminal, I get the desired result: ffmpeg -i src.mp4 -ar 22050 -ab 32 -f flv -s 320x240 video.flv Terminal's output ... video:3404kB audio:1038kB global ...
3
votes
2answers
2k views

ffmpeg to join videos

I previously learned that FFMpeg can join videos: However, I am attempting to join recorded over-the-air broadcasts (.ts files), and I believe that minor hiccups in signal quality are causing FFMpeg ...
0
votes
1answer
291 views

Is it possible in ffmpeg to seek to position of the file that is received through stdin

Is it possible to -ss in ffmpeg to the file, that is being received via pipe? So that I start reading it from a given timecode? I am not encoding the file. Thanks
4
votes
2answers
6k views

Converting images to video using FFMPEG on Windows

I'm trying to convert a series of JPEG images into a time lapse video. They're in the format IMGP0001.JPG, IMGP0002.JPG, etc. From the looks of things, this should match the pattern IMGP%04.JPG. I've ...
5
votes
1answer
1k views

Two FFMPEG commands simultaneoulsy

I want to multicast two videos to two different ports of a multicast address. I am able to send one video to one port at a time. But I want a command where both the videos are sent to the ports at the ...
0
votes
1answer
163 views

Youtube “failed to convert” using ffmpeg CLI

I'm using ffmpeg to split videos to comply with their length but whenever I upload them it says "failed to convert". I'm using this settings ffmpeg -i "${file}" -ar 22050 -vcodec libx264 -acodec ...
1
vote
0answers
639 views

How to provide multiple input to ffmpeg?

I'm using ffmpeg to create time-lapses and it's working great. As input I have images named 001.jpg, 002.jpg, etc. and then with the command ffmpeg -i %3d.jpg -sameq -s 1440x1080 video.mp4 I create ...
1
vote
1answer
566 views

Reference on ffmpeg -i output

is there some site explaining in details what are the informations output by FFMPEG ? As an example, when displaying the result Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'chti_jug_maven_studio.mp4': ...
0
votes
3answers
538 views

join videos split screen

I am looking for a command line tool to join 2 video files, however I want the videos joined split screen frame by frame instead of one after another. Any ideas? Seems this is not possible with ...
32
votes
3answers
42k views

Using ffmpeg to cut up video

I am using ffmpeg to cut out a section of a large file like this: ffmpeg -i input.wmv -ss 60 -t 60 -acodec copy -vcodec copy output.wmv The -ss part works fine but the -t is ignored. It correctly ...
3
votes
1answer
8k views

Video Thumbnails using ffmpeg

I'm looking for a nice short easy way to create a series of thumbnails for any given video file. I'm almost there using ffmpeg, here's what I have: ffmpeg -i /tmp/video.avi -r 1 -ss 60 -r 1 ...
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?