Media tool with support for multiple codecs, filters, and containers. Include the full, uncut console output if you have problems with an FFmpeg command.

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8 views

Is there any FFmpeg Build for windows with decklink-output-device support?

I need ffmpeg with decklink-output-device support , But I can't compile it. Is there any FFmpeg build for windows with decklink-output-device support?
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0answers
12 views

avconv / ffmpeg covert images to video skips frames when frame type changes

I have an instance of ffmpeg that captures one fps from our home CCTV cameras. At the end of the day I have an ffmpeg script that takes those images and turns them into a video. This is fine with one ...
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1answer
27 views

Splitting one stream 12 channel audio into separate mono channels?

I have a 12 channel QuickTime single audio stream which I am attempting to split into separate 12 audio streams in one output file. From MediaInfo my source audio configuration looks like the ...
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1answer
29 views

Why will this mp4 file (generated by ffmpeg) play on safari but NOT firefox?

I have an mp4 file (that's blank space, I use it to test subtitles) It's currently sitting at http://projectgrin.org/SubtitlePlayer/video/output.mp4. I generated it with ffmpeg. My notes are ...
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1answer
14 views

overlay with video offset not starting audio with same offset

I have a video with audio (overlayvideo.mov) that I'm overlaying over another video (basefilem.mp4) and I'm starting the overlay at 20 seconds. The output (finalvideo.mp4) looks great, but the audio ...
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0answers
26 views

Can I capture a series of images named according to its timestamp

I am successfully capturing a screen shot every 15 seconds with the below command, but I need to correlate the images to where in the video the screen shot is from. The %d gives me an integer, but ...
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0answers
12 views

Add a scaled watermark to video thumbnails with FFMPEG

I'm trying to capture images from a video every 60 seconds AND add a copyright watermark at the bottom of each image that is captured. The below command captures and overlays, but the watermark ...
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0answers
30 views

using ffmpeg to repair corrupted MP4 video files from Xiaomi Yi

did not know wether to create a new thread or to post in an existing one. Decided for the first option, as my case seems to be a little different as I do not have one video corrupted but plenty of ...
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0answers
14 views

Which audio codec is preferable to use for mp4 video?

I use standart codec for encoding and i don't like the quality of audio even if there is larger audio bitrate. ffmpeg -y -i input.avi -i watermark.png -filter_complex ...
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11 views

ffmpeg concatenate dynamic chunks (on-the fly)

The ffmpeg docs for concat lists the following way ffmpeg -f concat -i mylist.txt -c copy output The mylist.txt file contains file like file '/path/to/file1' file '/path/to/file2' file ...
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0answers
20 views

How do you keep FFMPEG / libx264 from producing a high bitrate at the start of the video?

I have noticed that the Linux version of FFMPEG tends to blow its bit budget like a drunken sailor at the very beginning of a video. Is there a way to prevent this and/or suppress it? I looked thru ...
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6 views

Libvpx install with Yasm in non default directory

i can not install libvpx because it is looking for Yasm in the default directory is there a way to tell it where Yasm is installed?
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0answers
11 views

How do i add a video delay in ffmpeg?

I have the standard notepad script and i have been given the task of adding a video delay to our stream i have never used ffmpeg before and i would like to know how to add this delay or what i have to ...
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0answers
30 views

Using FFmpeg, can I make a batch file do nothing if it's going to upscale my input file?

I'm running an FFmpeg batch file through a digital media repository. My desire is for it to treat files similar to if it was uploaded to YouTube or Vimeo. To do this, I need it to convert the file ...
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1answer
15 views

Retrieving height with FFMPEG

I made the following command I use to get the height of a video: ffprobe -v quiet -print_format compact=print_section=0:nokey=1:escape=csv -show_entries stream=height "source.mp4" Sometimes it ...
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1answer
22 views

ffmpeg overlay last frame remaining in video

Have an issue where an overlay video has it's last frame remaining in the output video until the full video is complete. The full video is 10 seconds and the overlay video is 5 seconds. The overlay ...
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2answers
26 views

Fastest way to cut and remove parts of a video

I have a movie which is encoded using H264 (mp4) and is 800 MB in 720p format. I need to remove some parts of it for example remove 10:25 to 10:30 and so on. I've worked with adobe premiere buy it ...
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0answers
16 views

FFmpeg doesn't see any fonts in the directory set in fontconfig

FFmpeg's ASS filter works properly with the following fonts.conf file: <?xml version="1.0"?> <fontconfig> <dir>/Library/Fonts</dir> </fontconfig> But when I change ...
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1answer
12 views

Install package not in repositories so that dpkg knows about it

I am trying to compile some software for my raspberry. During the configuration process, the following appears: configure: error: Requested 'libavcodec >= 55.0.0' but version of libavcodec is ...
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0answers
12 views

ffmpeg screencast detect screen resolution

I do not want to put the screen resolution my self. I would like to screen capture full size. Currently I do: ffmpeg -f x11grab -r 15 -s 1366x768 -i :0.0 -qscale 8 ~/Desktop/yoyoyo.ogv How can I ...
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0answers
27 views

Encode H265 to hvc1 codec

Here is the info of my source file: I want to keep audio quality and just encode the video track so I use this command: ffmpeg -i INPUT -c:a copy -c:v libx265 video-h265.mp4 This is the result: ...
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29 views

watermark animated video 10 in 10min [closed]

I need a watermark equal to xvideos. some features: Centered on the vertical Font, font size Animation speed Log in txt (I get progress conversion) The most important: The watermark must pass 10 ...
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2answers
65 views

What ffmpeg command would convert a video for iPad/iPhone/iPod?

I'm currently using a batch file which (amongst other things) runs the following handbrakecli command line to convert a video: HandBrakeCLI.exe -v0 --input "D:\input.mkv" --preset="Universal" ...
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1answer
29 views

FFmpeg Sequentially Apply Filters

I'm very new to FFmpeg (just installed it this morning) and need it to do a very specific task. I have a bunch of long recordings that I need to split into non-uniform sections, add some padding ...
0
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1answer
32 views

avconv: Converting from .ts to H264, with high quality screenshots

I am using avconv to convert MPEG Transport Streams to H264. My main goal is to capture high-quality screenshots from the source video files. The TS files are interlaced, so I am first converting to ...
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1answer
11 views

Replacing ALL audio streams of a video in ffmpeg but keep meta

I already found this link but the answer doesn't really say much about replacing more than one audio track. I quite don't understand the -map things he does in there and I would just like to replace 5 ...
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1answer
39 views

Reducing bitrate with ffmpeg using `-b:v 500k` doesn't actually reduce bitrate to 500k

I am trying to create several downgraded versions of a video file with ffmpeg. I am using the following command via the command line (the command is taken from the documentation): ffmpeg -i ...
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2answers
36 views

FFmpeg : mp4 and multiple srt into mkv

I have a couple of srt subtitle tracks for an mp4 video. How do I make them into mkv using ffmpeg/avconv? I would like to use space efficiently. Performing conversion on Darwin v13. I will be ...
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0answers
35 views

ffmpeg gives error DTS out of order and Non-monotonous DTS in output stream

I'm trying to concatenate multiple mp4 videos into one using ffmpeg. The "how to" for this is mostly identical across the web: ffmpeg -f concat -i inputfile.txt -c copy output.mp4 But when I try to ...
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0answers
26 views

How can I send a region of the screen to a TV that is connected to HDMI port ? (by FFmpeg or C# codes or etc)

I need to send a region of the screen to a TV that is connected to HDMI port. How can I do it? Is it possible by FFmpeg or other tools? (Cheap commercial or free tools)
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2answers
45 views

ffmpeg how to convert mkv vp90 to mp4 h.264?

i would like to ask how to convert an .mkv VP90 to an mp4 h.264 ? I downloaded .mkv video from youtube and it's using VP90, VLC is unable to read VP90, so i have to convert it to my usual H.264, in ...
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1answer
21 views

Using ffmpeg to extract segment in the middle of long video

I need to extract a 30 second interval from the middle of a video, while converting it to webm. ffmpeg seemed like the perfect one liner: ffmpeg -i long.mkv -vcodec libvpx -b:v 1M -ss 02:00:00 -t ...
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1answer
27 views

Re-encode AC3 5.1 audio with variable bitrate using FFmpeg

Does the AC3 audio format support variable bitrate encoding? If so, is it possible to use FFmpeg's -vbr option to achieve that? I'd like to avoid converting from 5.1 to a 2-channel stereo because ...
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0answers
9 views

No audio in flash player after MPEG2 to SWF avconv conversion

I converted a mpeg2 video to a swf file using avconv: avconv -i test.mpg -acodec libmp3lame -ar 22050 test.swf There is no issue when playing the resulting file in vlc, but in iceweasel with the ...
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vote
1answer
23 views

How to overlay multiple video files and merge all audio with ffmpeg?

I overlay from 2 to 5 video files in a grid and I want to merge all the audio from each video. Here is my code to combine 3 video files. I think it works, but I get a warning I don't like. ...
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2answers
34 views

unable to find a suitable output format for 'ΓÇô'

I'm trying to encode videos for mpeg dash streaming, I used the following command (I bring it from this article: ...
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1answer
30 views

RTMP , RED5 multicasting

I am trying to implement multicast on a red5 server specific to an application called Bigbluebutton. It uses RTMP for audio, video and texts. problem: I cant use flash media server to implement the ...
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2answers
27 views

Cut an FFmpeg video based on frames not a timecode

I want to cut a video with FFmpeg using something similar to the code below: ffmpeg -i movie.mp4 -ss 00:00:03 -t 00:00:08 -async 1 cut.mp4 However I want to specify -ss and -t in frames instead of ...
1
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1answer
29 views

How can I automatically segment a mp4 video based on a list of frames

I have a 7 hour long h.264 video made up of 1600 shorter videos and I have a csv file with a list of frames at which I need the longer video to be cut at. Is there any way that I can automatically ...
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2answers
552 views

Does simple rescaling from 1080p to frame height of 720 lead to 720p?

I want to convert a 1080p to 720p and also lower resolutions eventually. I have been using ffmpeg for all my video processing activities so far, and would simply approach this task using the ...
0
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1answer
32 views

How to merge two video without audio stream in ffmpeg

I want to merge multiple image to a video in different time, but I failed. At first, I merge the first group of pictures to 'video1.mp4' by following code: $ ffmpeg -loop 1 -r 30 -i img%2d.png -t ...
0
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1answer
54 views

ffmpeg to convert videos into one

ffmpeg has a wiki on Concatenate at https://trac.ffmpeg.org/wiki/Concatenate It does concatenation without any conversion. I'm wondering if it is possible to do the concatenation WHILE doing the ...
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0answers
43 views

Convert videos to MP4 iPad (h264 and aac), but leave video codec alone if h264 already

I want to batch convert video files with different extensions and convert them to MP4. If the video codec is already H.264, I want to copy it and convert the audio only if it is AC3, MP3, or anything ...
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0answers
57 views

Ffmpeg same command, different results local vs server. Video shakes, invalid dropping

I am trying to concat some files without reencode so I use ffmpeg -f concat -i list.txt -c copy out.mp4 On local it works perfect but on a dedicated server video shakes! Is like video is frozen ...
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0answers
30 views

red5 record ffmpeg live stream

I use ffmpeg release live streaming to red5 server and red5 recorded the live stream to flv files. red5 is 1.0.4 Release. the ffmpeg command line: ffmpeg -f gdigrab -offset_x 0 -offset_y 0 ...
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1answer
35 views

how scale and center watermark on video using ffmpeg

I want to scale a large watermark to be 2/3 of video width I already manged to center the watermark ffmpeg -i input_video.mp4 -i watermark_opacity2.png -filter_complex ...
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0answers
41 views

Playing RTMP link using FFplay

I've managed to play several rtmp streams using ffplay but unfortunately not this one, I'm trying to play live stream from http://www1.iransima.ir/ First Try I've tried provided URL from web page ...
0
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1answer
21 views

ffmpeg - multiple watermarks with fade effects

Only the second watermark is present when using this command line: ffmpeg -i in.mp4 -loop 1 -i wm1.png -loop 1 -i wm2.png -c:a copy -filter_complex ...
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vote
1answer
35 views

FFplay - Seek to previous key frame

Is it possible to have FFplay seek from current position to the position of the previous I-Frame? I'm trying to find a way to do this as fast as possible without generating a full FFprobe ...
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1answer
30 views

(FFMPEG) Re-encode audio using qaac.exe

I was using a script to batch re-encode audio to AAC using the libvo-aac encoder. @ECHO OFF FOR %f IN (*.mkv) DO call ffmpeg.exe -i "%f" -c:v copy -c:a libvo_aacenc -b:a 256k "%f" However since I ...