Questions tagged [ffmpeg]

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 program for transcoding multimedia files.

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3answers
47k 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 ...
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3answers
2k 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 ...
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2answers
5k views

How to re-encode a video file's audio, but leave the video stream with ffmpeg?

Does anyone know how to take a video and re-encode the audio, but just copy the video data using FFMPEG?
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1answer
1k views

Using a parameter file for filter option of libav (or ffmpeg)

Good time of the day, I have heard that such a feature exists, but i've lost the reference and have been unable to find it now. I am looking for a way to use the file as the input for all the fileter ...
2
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1answer
680 views

Adding image to a video file using ffmpeg

I have created a OGG file from a stream of jpegs using fmpeg within a c# application. I would like to know if it is possible to add an image (of same size and resolution) at a later date to this ogg ...
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1answer
212 views

How to convert video for viewing on Sony Ericsson C702?

I'd like to convert some of my videos for viewing them on Sony Ericsson C702 cell phone. But I couldn't find the right set of parameters (a/v codecs, container, etc.). I'd prefer a solution using ...
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2answers
5k views

Error FFMPEG when convert video to MP4 with baseline presset

I have this command in ffmpeg: ffmpeg -i '/var/www/sites/default/files/private/videos/original/reel para web en loop_2_2.mp4' -vf 'scale=640:480' -strict experimental -vco dec 'h264' -vpre 'libx264-...
4
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1answer
9k views

FFMPEG output is blocky

I'm attempting to extract the individual frames from a raw AVC video stream. I'm doing this via the following ffmpeg command: ffmpeg -q 1 -i video_test.avc -f image2 frames/frames_%04d.jpg The ...
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0answers
938 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 ...
0
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0answers
272 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 ...
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0answers
202 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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1answer
1k 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 ...
1
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1answer
3k views

Convert Uncompressed AVI to JPEG2000 in MXF

I'm looking to convert raw, uncompressed video (currently in avi container) into lossless motion jpeg2000 encoded video in an mxf container. I've tried FFMPEG, but don't think it can do this. What's ...
6
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1answer
2k 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
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2answers
5k 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
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2answers
142 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 ...
1
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0answers
650 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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1answer
4k views

Encoding DNxHD using ffmbc

I have decided to re-encode my footage as DNxHD for editing. I am using ffmbc (downloaded here) to do the encoding. My source footage is HDV 1080i50. Therefore I think the best format to trancode ...
3
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1answer
138 views

How do I prevent Quality loss in the beginning of a video?

My company transcodes videos sent in by users (recorder by our own screenrecording software) I use FFMpeg to do the work using this command: /ffmpeg/ffmpeg -i in.mov -vcodec libx264 -fpre /ffmpeg/...
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3answers
860 views

Pixelate effect when converting MOV to FLV via FFMPEG

I have a .MOV video -created with Final Cut Pro 7 - which I'm converting to .flv using FFMPEG. I'm very happy about the quality and the size of the output file, but whenever I have fade in/out ...
3
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2answers
9k views

How do I recover truncated AVI/DV video?

Short version: I believe I have truncated but otherwise valid AVI/DV files that won't play in any player I've tried (Adobe Premiere, MPC HC, VLC). I assume the stream data is intact but truncated, and ...
0
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1answer
928 views

Corrupt video when playing through JW Player

I have some files that when played in jwplayer the playback is corrupt. The files are encoded to h.264 using FFMpeg and there is other files encoded in the same way that works. At the moment we only ...

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