FFmpeg is a free software project that produces libraries and programs for handling multimedia data. The most notable parts of FFmpeg are libavcodec, an audio/video codec library used by several other projects, libavformat, an audio/video container mux and demux library, and the ffmpeg command line ...

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26
votes
1answer
35k views

How can I crop a video with ffmpeg?

I have an MP4 file of a screen recording that I need to crop down. How can I accomplish this without using expensive tools like Adobe Premier or Final Cut? I prefer ffmpeg because I have used it ...
8
votes
4answers
15k views

How to losslessly encode a jpg image sequence to a video in ffmpeg?

I have a large set of jpgs that I want to convert to a video losslessly (or, at the very least, very close to losslessly as long as the encoding time isn't much higher than otherwise). Naively, I ...
8
votes
4answers
5k views

How to get FFMPEG to join non-sequential image files? (skip by 3s)

I have a bunch of images, that follow this pattern. 0001.png 0004.png 0007.png 0010.png 0013.png 0016.png 0019.png ... They're in the correct order, but FFMPEG ignores anything after the first ...
7
votes
1answer
783 views

Batch resize videos with “pan and scan” cropping

I am trying to prepare a collection of ~120 video clips to be played in VLC Player and projected on a low-res (1024x768) projector during a DIY electronic music event. The source clips are all super ...
6
votes
1answer
10k views

How do I change frame size, preserving width (using ffmpeg)?

I'm new to this StackExchange site, and to using the ffmpeg encoder. I have a video that is 720x480 (3:2) that I would like to change to 720x406 (16:9) to match the other videos I have for a site. I ...
6
votes
3answers
14k views

How can I use FFmpeg to lower the quality of H264 video but keep it in H264 format?

I'm a complete noob to video editing, so forgive me if I ask for something ridiculous. I'm getting video clips from a set top recorder box. The clips are AVI files: Resolution: 1920 x 1080 Frames ...
6
votes
1answer
6k views

Repeat/loop Input Video with ffmpeg?

I just want to loop a mp4 video with ffmpeg and keep the current settings and codec. For example if input.mp4 is 0:10 long, and I would want to loop it 4 times so output.mp4 is 0:40 long, how could I ...
6
votes
2answers
2k views

OGV Format plays properly on my computer but transcoding drops (duplicate?) frames

I've made a set of screencasts using recordmydesktop on ubuntu 12.10. The output is an ogv file. When I watch the ogv file using the default movie player (totem) it looks fine - the audio and video ...
5
votes
2answers
4k views

How to concatenate clips from the same video with ffmpeg

I have a long video with different scenes in it. I want to extract and concatenate 2 scenes from the video (that do not start on an I-frame) using ffmpeg 2.1.4. For argument, say I want 5 seconds ...
5
votes
3answers
9k views

How can I convert .MTS file (AVCHD) to .mp4 by ffmpeg without re-encoding H264 video stream?

Note: I posted same question to stackoverflow a short time before, when I have not found this comunity yet. I repost this since the question is more suitable to this community. 1. What I tried I ...
5
votes
1answer
530 views

How do I speedup encoding of a video that has just 1 static frame with ffmpeg and lib264 library?

I'm making mp4 (libx264 + aac) videos that have just one static image throughout the whole video. It's basically a narrated text with a nice background. The question I've is how could I speed up ...
4
votes
2answers
569 views

What is the difference between ffmpeg and ffmbc now?

Two years ago I've used ffmbc to encode videos to prores, but nowadays ffmpeg also supports prores and avchd. What is the difference between ffmpeg and ffmbc now?
4
votes
1answer
835 views

Similar to “levels adjustment” brightness improvement with ffmpeg

I'm composing a video from set of 16bit tiff pictures. The pictures are very dark, and needs to be brightened. Currently I'm applying -vf "mp=eq2=1.0:1.0:0.3:1.0:1.0:1.0:1.0:1.0" filter to make ...
4
votes
3answers
940 views

creating a lossless mp4 screencast

I'm trying to create a screencast for playback on the web. Would like to use h.264, webm, and ogg. The source files are in the Apple Animation codec, and they look perfectly accurate. However when I ...
4
votes
1answer
475 views

How to create a x264 (mp4) video with the smallest size using ffmpeg that has just 1 image through entire video?

I'm creating narrated mp4 (x264+aac) videos for books. Each video has just the book's cover as the background. I wonder what would be the most effective way to create such videos with ffmpeg? I've ...
4
votes
2answers
102 views

Moving Crop in Video

I have an HD video of a speaker giving a lecture. I would like to resize the video by cropping each frame, but the cropping rectangle needs to be centered on the speaker's head as he moves around the ...
4
votes
0answers
260 views

Copying h.264 video from TS into MP4 changes frame rate and time

I have large MPEG-TS file that I am converting to MP4 using the below command. If I seek to the same time in the video in both the MP4 and the TS file, the MP4 will be a few frames behind the TS ...
4
votes
0answers
186 views

Is it possible in FFMPEG to change scale over time?

Ok, so using the overlay filter, one can change the x/y location of a video over time by using the "t" variable. For example, overlay=x='if(gte(t,2), -w+(t-2)*20, NAN)':y=0 can be used to start ...
3
votes
2answers
810 views

How do I remove audio from all files in a directory with ffmpeg?

I have a directory full of short video clips in .AVI format, and I want to remove the audio from all of them. I'm using Ubuntu 12.04. I tried this command: find -name '*.avi' -exec ffmpeg -i {} -an ...
3
votes
2answers
271 views

Add image under the video with ffmepg

I want to extend basic usage of watermark and put it under the video. That means. I have input video 720x480 and image 720x20. On output i want to have video 720x500 where video aspect is preserved ...
3
votes
2answers
1k views

How to encode a video at 30 FPS from images taken at 7 FPS

I have no knowledge whatsoever about video encoding, I have an application written in OpenGL and I am saving the frames it generated into png images. The frames from my app are at 7 FPS and I am ...
3
votes
1answer
5k views

Add an image in front of video using ffmpeg

I have many videos and I need to put an image in front of them for about 5 seconds, but adding it manually and rendering it each time would take really long, so I am asking if it is possible to do so ...
3
votes
1answer
144 views

ffmpeg drawtext filter - create transparent background with text

I am currently working with the drawtext filter. So far I have only been successful with drawtext option configurations to use the right font and place the text horizontally centered. How could i get ...
3
votes
1answer
96 views

Video converted by FFMPEG has a different duration, why?

I convert videos using FFMPEG. My goal is to convert them to the MP4 container format (MPEG-4 Part 14) with AAC-encoded audio stream and MPEG-4 part 10-encoded video stream. I use the following line ...
3
votes
1answer
858 views

How to downsample 4k to 1080p using ffmpeg while maintaining the quality?

I have some 4K 3840x2160 footage in MP4 format that I need to bring down to 1080p. I tried running ffmpeg -i orig.mp4 -vf scale=1920:1080 smaller.mp4 but the result is very poor quality, with ...
3
votes
1answer
138 views

ffmpeg input from images stream out video

I am using ffmpeg to capture a video recording device and would like to add an overlay to it . I have images being rendered on the fly and I would like to use them as the overlay . How can I take a ...
3
votes
2answers
1k views

How to hold the last frame when using ffmpeg

I'm cutting/converting some videos with ffmpeg. What I'd really like is to be able to have the output hold the last frame for a few seconds (with silence for audio). Is such a thing possible? Or ...
3
votes
1answer
1k views

Combine multiple videos as separate streams in one mkv file

So I have multiple videos of the same scenery from different angles. These are stored as separate files. Can I combine these as multiple video streams within one file? For example I know this is ...
3
votes
2answers
162 views

drop similar frames

I'd like to record a very long video from webcam which will be mostly the same. I'd like to drop intermediate frames that are very similar to each other to save on filesize and also make it easier to ...
3
votes
1answer
332 views

Creating stereoscopic video from two video files

I've got two video files, each created with ffmpeg from a series of JPEG images, which I've obtained from rendering with a stereo camera in Maya. I would like to somehow merge together these videos ...
3
votes
1answer
2k views

How to trim a video with frame precision using ffmpeg?

I need to trim videos with a precise end frame, however, ffmpeg seems to cut the video at the nearest first key-frame. So I don't have enough control over the ending frame. I try to insert key-frame ...
3
votes
1answer
6k views

How to force ffmpeg to insert keyframe at first frame when downsampling a framerate of a video with x264 vcodec

I have a mpeg4 video at 25fps. This video contains just one static frame. I'm trying to downsample the frame rate to 1fps and convert the video to x246 (mp4). I ran the following ffmpeg command: ...
3
votes
2answers
117 views

Why is this ffmpeg command outputting such long clips?

I am trying edit out a two minute clip from a long movie. This is the command I'm using: ffmpeg -ss 01:05:16 -t 120 -i input.avi -vcodec copy -an clips/output.avi I thought that 120 would be in ...
2
votes
4answers
615 views

Why isn't ffmpeg used in movie production or broadcasting tool chains?

Is the assumption in the title true? What is preventing the use of ffmpeg when producing a movie or broadcast quality material? Are there any prominent or well known users of ffmpeg? What is used ...
2
votes
3answers
102 views

Can I use h.264 codec inside .mp4 container for my website

I would like to use h.264 as the codec inside .mp4 container for my user uploaded videos for my website. But I saw somewhere that h.264 is non free. I am unsure whether I can use this technology or ...
2
votes
3answers
10k views

How do I specify baseline H264 profile using FFmbc?

I am using FFmbc (a FFmpeg derivative) to transcode some video files to H264 (in a mov wrapper). I want to specify baseline profile (to reduce CPU usage) but can't figure out how. There doesn't seem ...
2
votes
3answers
661 views

FFmpeg MP4 to FLV too slow

I am converting .mp4 files to .flv using ffmpeg in centos. But the conversion time is extremely too slow! It takes about 1.5 hours to convert 500MB .mp4 file into .flv. I am using a linux vps with 2 ...
2
votes
3answers
356 views

h264 settings for large flat areas of slowly changing colour

I'm doing an animation for a projection mapping that simulates the sun casting shadows on a structure as it moves through the sky. Basically it's just big flat areas of colour that change over about ...
2
votes
2answers
33 views

VOB editing with FFMPEG

I read that it is better to extract from vob H264 files within a .ts to have a lossless and more accurate sample, easy to cut, is that correct ? I used these commands : ffmpeg -i VTS_01_1.VOB ...
2
votes
1answer
77 views

ffmpeg - video with timer

I am currently working with the drawtext and drawbox filters to recreate a similar video appearance to what is shown below in the image. I am trying to see of a possible ways to add a count down timer ...
2
votes
2answers
3k views

encoding 4:2:2 in 10-bit with libx264

I believe that libx264 is now capable of doing 10-bit 4:2:2 encodings, but I can't seem to get it to work. I'm using ffmpeg (info below), and I've also tried the x264 encoder directly. I've tried ...
2
votes
3answers
1k views

ffmpeg: Normalize audio in an avi file

Ι have an avi file that has different levels of audio. Is there a way to decrease and increase appropriately where needed the audio of my file using ffmpeg?
2
votes
1answer
2k views

What ffmpeg/avconv format and container will Adobe Premiere Pro accept, out-of-box?

All of these converted, but Premiere Pro only loads the audio. I use Ctrl-I to import the videos, and they come up as waveforms, and can only be placed on audio tracks. These examples use avconv, ...
2
votes
2answers
29 views

How can I set the first frame of a video to an I-frame and the rest to P-frames (preferably with ffmpeg)?

I'd like to try to do some datamoshing like this tutorial. But I'd like to be able to do it programatically, so instead of vdub and avidemux, I'd like to figure out how to do as many parts of this ...
2
votes
1answer
273 views

Non-Monotonous DTS on concat (ffmpeg)

After running this command ffmpeg -f concat -i mylist.txt -c copy output.mp4 - I'm getting corrupted output.mp4 file and this message: ffmpeg -f concat -i mylist.txt -c copy output.mp4 ffmpeg version ...
2
votes
1answer
177 views

How to do mpeg/mpg to mov lossless convertion?

Does anyone know how to do lossless conversion from *.mpeg/mpg to mov? I was asked to extract video from DVDs and do editings in FCPX, however FCPX cannot edit *.mpeg/mpg file natively, therefore I ...
2
votes
1answer
580 views

How to compile FFmpeg with libfdkaac into a single static binary?

My target is to build a single static FFmpeg binary with libfdkaac and x264 support for OSX and Linux. First, I tried to build one on OSX, I follow the instruction on FFmpeg web: ...
2
votes
1answer
61 views

ffmpeg framemd5 format explanation

Does a frame consist of audio and video or just video? I am trying to verify if this can be used for confirming both audio and video data were successfully sent or if I need to handle the audio ...
2
votes
2answers
3k views

How to do a video live stream through a VPS?

I've been looking at a million resources and I can't find a definitive answer to this. I'm looking to do a small scale (max 50 viewers possibly), low quality live video stream, with nothing but my ...
2
votes
1answer
2k views

restart encoding with ffmpeg when bad source

I have an ffmpeg process which saves a stream from wowza server, but when the stream in wowza is interrupted for a second or so sometimes ffmpeg cycles in: [segment @ 0x671a10] st:0 PTS: 9600015 DTS: ...