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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100 views

Lossy output with FFMPEG JPEG 2000

I'm trying to achieve a lossy JPEG 2000 output with FFMPEG, but no success so far. Using this command line: ffmpeg -i input.dpx -pix_fmt yuv420p -vcodec libopenjpeg output.jp2 As a result I get ...
2
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1answer
76 views

Unable to concatenate videos due to identical MOOV atoms

I am cutting out segments from a long mp4 file and then rejoining parts of them. However, since FFMPEG apparently keeps the same MOOV atom for the trimmed files as the original, it looks to FFMPEG ...
4
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0answers
94 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 ...
2
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0answers
79 views

segment does not contain sync frame

Whenever I split a video using Apple's mediafilesegmenter, using the following command: medifilesegmenter video.ts -t 10. I get the following error for each segment except the first: segment does not ...
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0answers
13 views

ffmpeg adds unneeded zero samples at begging of resulting m4a file

Input file original.wav ffmpeg -i original.wav ... Duration: 00:03:36.93, bitrate: 1411 kb/s Convert wav to m4a with fdk-aac encoder: ffmpeg -i original.wav -c:a libfdk_aac -vbr 5 ffmpeg.m4a ...
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0answers
17 views

How to get ffmpeg/x264 to use same parameters as input?

I'm trying to accomplish a smart rendering workflow using ffmpeg/x264. In short, get ffmpeg to segment the input file. Locate the segment(s) with changes to be made. Re-encode altered segments with ...
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0answers
132 views

How to transcode mkv media into different resolutions with ffmpeg

I am trying to setup a server that allows me to broadcast a single media file using ffmpeg to a ffserver so that I can use the RTP protocol to allow clients to view the media at different resolutions ...
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0answers
78 views

ffmpeg-php with fixed width and height and without stretch or squish

Hi there I googled for hours but no success to solve... This code works for me exec("ffmpeg -i $SourcePath -ar 22050 -ab 32 -f wemp -vf scale=500x400,setdar=16:9 $uploadpath1 2>&1"); but ...
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0answers
47 views

Set ipad compatible thumbs for mp4 videos based on a frame of the video with command line

I have a directory of 100 mp4 files. All are working well on my ipad but most of them do not have a working thumb. I want to generate these thumbs with a command line command (on macosx) based on a ...
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0answers
353 views

Lossless Editing by Combining Clips with FFmpeg x264

My new Canon Vixia HF G30 video camera has an option to encode directly to 35 Mbit/sec Mp4 at 1080p60 and it does a nice job. I primarily use it to record my daughter's high school basketball games. ...
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621 views

High bitrate in AVCONV converted MPG file causes DVD reading problem

I convert AVI to MPEG with folowing command: avconv -i file.avi -c:v mpeg2video -b:v 6000k -c:a mp2 -b:a 384k file.mpg When the MPG file has been burned to DVD it is hard to read afterthat. The DVD ...
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337 views

ffmpeg - convert video to iDevice format, replace sound with normalized WAV file, while maintaining the original video quality?

I'm using this command line to extract the audio $ffmpeg -i video.mkv -c:a pcm_s16le audio.wav this is its output ffmpeg version 1.0 Copyright (c) 2000-2012 the FFmpeg developers built on Oct 1 ...
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0answers
12 views

FFMpeg and HLS, videos need to load in their entirety before they start playing

I am using ffmpeg to generate a segmented list of files in order to stream them to an iOS app. The list of files is generated fine but when it comes time to play them, the video needs to be downloaded ...
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0answers
31 views

Switching between H.264 video streams on the fly?

I have several H.264 encoded MP4 files, as well as still images. From these I want to generate a single video stream that I can broadcast. The stream will be composed of alternating still images and ...
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0answers
206 views

Stream a dynamic playlist to a RTMP server

My goal is to stream a dynamic playlist of video to Twitch. The problem is while I stream a file, I don't know which will be the next until the end of the current one. My playlist is a very simple ...
0
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0answers
67 views

HEVC binary to MPEG 2TS

I'm trying to convert a HEVC bit stream to MPEG-2 TS using ffmpeg. However I can't seem to perform the task without a wrapper such as mp4. Here is the command I was trying. ffmpeg -i ...
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49 views

ffmpeg libx264 not working

have Installed ffmpeg and x264 based on this post : http://stackoverflow.com/questions/9764740/unknown-encoder-libx264 no errors receved. but when i want to convert an input stream from mumudvb to a ...
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0answers
39 views

Putting a Lower bitrate of my video stream in my current mp4 container

Sorry if my question is too noobish, this is my first question. What I have is: An mp4 movie with a video stream and an audio stream. What I want in the output: Is an mp4 file containing: the same ...
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0answers
84 views

ffmpeg capture audio in raw format

I would like to capture audio with ffmpeg in .raw format. Here is what I do to capture in .mp3 format : ffmpeg -f dshow -t 10 -i audio="virtual-audio-capturer" -y "sound.mp3" note that I don't want ...
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53 views

Converting container or transcode movies to iPhone from command line (os x)

Over the years I collected many movies in different container formats (avi, mp4, mkv) and encoded with different codecs too. Now want convert containers (or transcode them if absolutely necessary) to ...
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53 views

ffmpeg output does not play

I'm trying to transcode an uncompressed AVI ~27GB in size to an MP4. I'm using the following command: ffmpeg -i input.avi -c:v libx264 -preset slow -crf 20 -c:a copy output.mp4 The resultant MP4 ...
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0answers
116 views

Where to start Transcoding with FFMPEG?

I would like to learn a lot about Transcoding video files with FFMPEG from any format to mp4 (hH264/AAC) format. We have a large repository of video files ranging from 1 MB to 2 GB of various formats ...