1
vote
1answer
13 views

FFmpeg pass through

I've a number of downloaded FLV files which I would like to convert to MP4. They are already in the correct format so I am told all I need to do is to remux the video and audio streams into an MP4 ...
2
votes
1answer
428 views

MP4 takes too long to start

I'm converting my video to H.264 / MP4 with ffmpeg. I then move the moov atom to the start of the file with qt-faststart, so I can stream the video. Everything works fine with small videos of 5–10 ...
0
votes
1answer
785 views

ffmpeg stops streaming after 900 seconds from Axis Camera to FLV RTMP

Audio and video works for 900 seconds and then, ffmpeg stops with: video:1889kB audio:1825kB global headers:0kB muxing overhead 2.162866% I stream from an AXIS IP camera through ffmpeg over nginx. ...
1
vote
1answer
517 views

Copied FLV file with FFMPEG won't open in any program except VLC

I am trying to add an overlay to a FLV file fetched from YouTube. The input file is 4.4MB and playable by QuickTime so it doesn't appear to have any issues. ffmpeg -i input.flv -vf ...
0
votes
2answers
2k views

FFMPEG add keyframes without reencoding

How can I add keyframes for FLV files without reencoding? I try to use this command, but do nothing: ffmpeg -i file.flv -vcodec copy -acodec copy -g 0 -y tmp.flv && yamdi -i tmp.flv -o ...
0
votes
1answer
451 views

FFmpeg can't convert MOV to FLV

When i try to convert a .mov file to .flv i get this type of output. I get error Invalid sample format '(null)' Error opening filters!. When I convert .avi or .mp4 I get no errors. I'm on ...
22
votes
4answers
9k views

How do I convert a video to GIF using ffmpeg, with reasonable quality?

I'm converting .flv movie to .gif file with ffmpeg. ffmpeg -i input.flv -ss 00:00:00.000 -pix_fmt rgb24 -r 10 -s 320x240 -t 00:00:10.000 output.gif It works great, but output gif file has a very ...
3
votes
1answer
871 views

FFmpeg command converting M4V to FLV; video streaming is very slow

I am using this command to convert videos from M4V and AVI to FLV: ffmpeg -i 'video_1355440448.m4v' -s '640x360' -ab '64k' -ar '44100' -q:v '1' -f 'flv' -y video_1355440448.flv I have two servers: ...
2
votes
1answer
544 views

How to merge video flv and audio wav file in ffmpeg

I want to merge an audio .wav with a video .flv using ffmpeg Please suggest me how to achieve this. i am using this command on ubuntu 12 : ffmpeg -i recod_audio.wav -i recod_ideo.flv -acodec ...
1
vote
1answer
2k views

How to create thumbnail image from .flv video by using ffmpeg ?

I am using following command to create thumbnail image from flv video , image is created but with error (image doesn't open) ffmpeg -ss 00:00:10 -i output.mp4 -f image2 -s 150x150 -vframes 1 -c:v ...
0
votes
1answer
2k views

Why can't I convert FLV to MP4 format using FFmpeg when MP3 works?

In fact I have succeeded to convert FLV to MP3: D:\tmp\ffmpeg-20121005-git-d9dfe9a-win64-static\ffmpeg-20121005-git-d9dfe9a-win 4-static\bin>ffmpeg.exe -i a.flv -acodec mp3 a.mp3 ffmpeg version ...
11
votes
3answers
6k views

How to concatenate two flv files?

I want to concatenate two flv files(downloaded from Youtube.com) by linux command line tools. The ffmpeg tutorial is too complicated, so I tried the mencode tutorial. But I get a empty output. I don't ...
1
vote
2answers
1k views

ffmpeg: Pipe input error

I'm facing an issue while working with ffmpeg when input and output are pipes. Though Output pipe is working fine, piping the input is causing some error. I tried to convert mp4 video to flv using ...
0
votes
1answer
2k views

.avi to .flv through ffmpeg

When I try to convert avi to flv, I always get gritty and pixelated output flv videos of size that are 1/4 of the the input avi videos were. The current set of parameters I use is ffmpeg -i input.avi ...
0
votes
1answer
855 views

ffmpeg multi convert videos and put them in the same path

I am using FFMPEG for converting from MOV to FLV on Ubuntu. My problem is I have 10 folders and sub folders that contains those videos, I want a command line or a way in WinFF GUI to convert them all ...
1
vote
2answers
883 views

Avoid ffmpeg to lose the flv files keyframes

I use ffmpeg to convert my files, but when I do so, I lose the keyframes metadata from my flv files. The command I use right now is: $/usr/local/bin/ffmpeg -i %s -ab 96k -ar 44100 -b 500k -r 25 ...
0
votes
1answer
1k views

FFMPEG video to FLV conversion optimization

I have a video site where users can upload videos which will be converted to FLV format and displayed. Those videos are shown at a size of 420x350. I'm using FFmpeg to convert then to FLV format ...
17
votes
1answer
29k views

Converting FLV to MP4 Using FFMPEG and Preserving the Quality

Im trying to use ffmpeg to convert my flv files to mp4 to play them on iOS devices but the converted video has a much worse quality than the original one. Here is the command i use: ffmpeg -i ...
0
votes
2answers
2k views

Converting a .mp4 file throws “Resampling with input channels greater than 2 unsupported.” error

I am trying to convert a mp4 file into flv with 2 audio channels & sample rate of 44.1 Khz (because .flv does not allow higher than that). Here is the pastebin for the error. As seen from the ...
0
votes
1answer
431 views

Which command should I use to make .jpeg from .flv using ffmpeg?

The below command creates jpeg out of .mpg, but fails to create jpeg out of .flv. How can I do that? $ffmpegpath = FFMPEG_PATH; $input = "video_file/orig/fdgdf.mpg";//Lady.flv"; $output = ...
0
votes
2answers
426 views

ffmpeg command line help

Does anyone know how to use ffmpeg? i got a list of files (video1.jpg, video2.jpg ... video10.jpg) that i want to convert to a .flv file so it displays like a slideshow. Does anyone know the command ...
3
votes
3answers
1k views

Watermarking videos on Linux

I want to add watermarking on to my FLV videos. Previously I used to do that using FFmpeg's vhook option but due to some problems I had to upgrade it to the latest SVN revision. This version of FFmpeg ...
3
votes
4answers
3k views

FFmpeg tweaks for converting from WMV to FLV?

When using ffmpeg to convert from .wmv files to .flv files, I find that either the quality is too low or the bps is too high. I am working on a Ubuntu Linux installation. Any suggestions? The bps ...