Super User Stack Exchange
Super User Stack Exchange

Questions tagged [concatenation]

173 questions
73
votes
7 answers

Concatenate multiple WAV files using single command, without extra file

I want to concatenate multiple WAV files into a single WAV file using FFMPEG. I have used the following command and it generates the required file. Command: ffmpeg -f concat -i mylist.txt -c copy output.wav File : #mylist.txt file '1.wav' file…
Manu
  • 953
  • 2
  • 7
  • 9
44
votes
7 answers

Join mp4 files in linux

I want to join two mp4 files to create a single one. The video streams are encoded in h264 and the audio in aac. I can not re-encode the videos to another format due to computational reasons. Also, I cannot use any GUI programs, all processing must…
Jose Armando
  • 441
  • 1
  • 4
  • 3
40
votes
4 answers

Linux command to concatenate a file to itself n times

I've taken a plain text file book from Project Gutenberg (around 0.5MB) which I want to concatenate to itself n times in order to generate a large text file that I can benchmark some algorithms on. Is there a linux command I can use to achieve…
Bryce Thomas
  • 1,171
  • 3
  • 14
  • 21
18
votes
1 answer

FFMpeg concat demuxer unsafe file name

I'm using ffmpeg inside my .net application to merge(concatenate) some short videos with the same encoding and width and height dimensions. I've created a txt file as the documentation says and this is my txt: concatTextDirectory is directory of my…
Eftekhari
  • 381
  • 2
  • 4
  • 11
17
votes
1 answer

How to concatenate a date in MS-excel and receive a date (not a number)

When I try to concatenate two cells in MS-excel in the formula I have the date as a integer number (eg: 04 april 2012 become 41006). How can I display the date also in the formula cells?
Ale
  • 746
  • 4
  • 16
  • 35
17
votes
7 answers

Cat command and echo

I'd like to concatenate the output from echo with content of a file. I've tried the following comand: echo "abc" | cat 1.txt > 2.txt but the 2.txt file only contains the content from 1.txt. Why doesn't it work?
Ringger81
  • 1,097
  • 3
  • 11
  • 22
16
votes
7 answers

How can I join multiple .mpg movie files?

I create a lot of these small clips on my digital camera. These are in .mpg format and before I share them with others, I would love to just join, clip a few seconds here and there. I use Google Picassa to create new start and end points, but I dont…
Kapsh
  • 417
  • 2
  • 6
  • 10
9
votes
2 answers

Cannot concatenate videos ffmpeg

I have a bitmap that I would like to concatenate to the front of many videos as a sort of title screen or disclaimer screen. I try to turn it into a video with the same attributes as the rest of the video. So first I introspect the video: ffmpeg…
Paul
  • 91
  • 2
9
votes
5 answers

Join Audio and Image -> Output as Video using FFmpeg

I have 1 image (jpg) and 1 audio file (MP3) and I would like to output this as a video file (say AVI for example). Does anyone know how to use FFMPEG to join the two? I'd like to show the image for the duration of the audio. Any ideas anyone?
user41559
  • 95
  • 1
  • 1
  • 3
7
votes
5 answers

How to merge/combine files with extensions .001, .002, .003.. etc?

Possible Duplicate: Good free software that will join .001 files? There are files on sites like rapidshare which have extensions like .001, .002, .003? They seem to be split by some tool. How to merge these files?
Tony_Henrich
  • 11,506
  • 28
  • 86
  • 116
7
votes
1 answer

FFmpeg concatenate audio and offset parts between each other

I figured out how I can concatenate multiple audio files with complex filter, but struggling with offsetting audio in result file. Say, I want to add a gap of 1 seconds silence between each concatenate file. Is it possible to do with FFmpeg?
layabout
  • 73
  • 1
  • 3
6
votes
2 answers

Concatenate files over FTP

I have a list of files on an FTP server that I would like to concatenate remotely. They are quite large, so I would prefer not to download them. The reason I'm in this situation is because I originally thought it would be easy to do, so I split a…
moinudin
  • 3,024
  • 2
  • 18
  • 16
6
votes
1 answer

Successfully concatenating multiple videos

My mission is to create videos out of old web slideshows. To start with I have jpegs and audio files that worked as Flash slideshows in an old system, structured such as this: Audio structure my_audio_1.mp3 (this file is a 3 second mp3 of…
user31640
5
votes
1 answer

How do I append dynamic number of spaces at the end of a string in a batch file

I want to output information to a log file as such 01/08/2013 14:30 - Dynamic-Machine-Name - Message starts 02/08/2013 07:12 - DynamicMachineName - Log entry 02/08/2013 07:14 - Dynamic-PC-Name - Information here 02/08/2013 08:01 -…
Ghandi Manning
  • 225
  • 1
  • 3
  • 9
5
votes
1 answer

Crossfade many audio files into one with FFmpeg?

Using FFmpeg, I am trying to combine many audio files into one long one, with a crossfade between each of them. To keep the numbers simple, let's say I have 10 input files, each 5 minutes, and I want a 10 second crossfade between each. (Resulting…
setouk
  • 53
  • 1
  • 3
1
2 3
…
11 12