Comments on: Convert .flv (Google Videos) to .mpg using ffmpeg

By: Linh Pham

Linh Pham — Wed, 03 Aug 2011 03:09:57 +0000

Hi All,
How to get error number if ffmpeg return when it runs?

By: abhilash

abhilash — Sat, 16 Jul 2011 06:14:17 +0000

FFMPEG is the right tool for multimedia junkies who like converting videos into popular cideo formats. It is a free video converter found in the default Ubuntu and other distro's. It's an open source project that contains an infinite number of libraries, mostly libavcodec and libavformat. which are well-known. Convert videos Ubuntu :

By: D M

D M — Thu, 30 Dec 2010 23:30:01 +0000

This is good. I was able to convert .flv files to .avi can it convert mkv files to avi as well?

By: mike

mike — Sun, 19 Sep 2010 22:54:09 +0000

If the bitrate on my file for audio and video is N/A then can I assume that its the default as stated on this page?

By: Jewel Zahra

Jewel Zahra — Tue, 01 Jun 2010 12:20:39 +0000

Fantastic!

By: johnalphen

johnalphen — Sat, 06 Mar 2010 11:11:10 +0000

Hello..

ffmpeg -i video.flv -ab 56 -ar 22050 -b 500 -s 320×240 video.mpg

is this the correct code for running video using pendrive?

By: phil

phil — Tue, 24 Nov 2009 22:29:36 +0000

hmm something seems to have broken in my system after i upgraded to ubuntu 9.10 from 9.04. all my videos are now playing bluish when played from the harddrive.

By: phil

phil — Tue, 24 Nov 2009 21:56:33 +0000

when i run the command, it converts it, but it removes colors from the video, for example everything has a blue hue to it. plus the audio gets out of sync, and skips at times. the flv itself runs perfectly fine.

command run:

(yes while i have the name booble in the filename, there is no adult in the video, it’s an SNL skit)

ffmpeg -i SNL_boobleit_full.flv -ab 48k -ar 22050 -b 500k -s 512×288 boobleit.mpg

any ideas?

By: edit for new version ffmpeg

edit for new version ffmpeg — Fri, 13 Nov 2009 01:02:04 +0000

for new versions of ffmpeg dont forget `k` in values
ffmpeg -i jokes.flv -ab 56k -ar 22050 -b 500k -s 320×240 jokes.mpg

By: martin fairall

martin fairall — Thu, 23 Apr 2009 14:01:56 +0000

hi - i use ffmpeg on my site for converting users cv videos into .flv files. Its hostsed on rackspace and they did a lot of the setting up for me but…. if you would like any help just email me and i’d be glad to help if i can?

By: 2sw2r

2sw2r — Mon, 23 Mar 2009 09:41:43 +0000

thanck you

very cool

By: Khalid rauf

Khalid rauf — Tue, 24 Feb 2009 09:22:17 +0000

i was amazed , i have used most simple command but didn’t worked properly

/usr/bin/ffmpeg -i sorce.avi -f flv target.flv

By: Nishad Aliyar

Nishad Aliyar — Tue, 10 Feb 2009 07:48:06 +0000

I need to get the video in the same quality of input file after video conversion and the size of the converted file near or same to the input file.
Can anyone help me please?, I lost more time in this.

This is the code I used for conversion
exec(“../ffmpeg -i 1.mov -sameq -f flv -vcodec flv -b 400kb -s 614×400 -qmin 1 -qmax 31 -acodec libmp3lame -ar 22050 -ac 1 1.flv”);

After conversion quality of the video is ok, but the size of the flv file (1.flv) converted is large in size.
If I remove the -sameq from the above syntax , problem of huge size of converted flv file
(1.flv) will solve , then the quality of the video is poor.

By: Jessica :)

Jessica :) — Sat, 07 Feb 2009 11:31:16 +0000

Hi!

Just an FYI, -b and -ab set the bitrate by bytes per second, not kb. Therefore multiply the supplied values by 1024.

I noticed somebody above got the same error. The easiest fix is the delete the settings supplied above and use the defaults.

By: VulcanNonibird

VulcanNonibird — Fri, 06 Feb 2009 07:14:11 +0000

I somehow can’t convert those damn new 16:9 FLVs youtube uses now….damn them….(-;

By: heru h day

heru h day — Thu, 08 Jan 2009 17:58:04 +0000

i have a error message after convert my flv video to mpg ..
anybody can help me??

root@heru-laptop:/media/data_/baru_/Downloads/Video# ffmpeg -i 40745412.flv -b 39 -ab 22050 -b 500 -s 160×120 jokes.mpg
FFmpeg version r11872+debian_3:0.svn20080206-12ubuntu3, Copyright (c) 2000-2008 Fabrice Bellard, et al.
configuration: --enable-gpl --enable-pp --enable-swscaler --enable-x11grab --prefix=/usr --enable-libgsm --enable-libtheora --enable-libvorbis --enable-pthreads --disable-strip --enable-libfaad --enable-libfaadbin --enable-liba52 --enable-liba52bin --enable-libdc1394 --disable-armv5te --disable-armv6 --disable-altivec --disable-vis --enable-shared --disable-static
libavutil version: 49.6.0
libavcodec version: 51.50.0
libavformat version: 52.7.0
libavdevice version: 52.0.0
built on Oct 3 2008 22:40:31, gcc: 4.3.2

Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 15.00 (15/1)
Input #0, flv, from ’40745412.flv’:
Duration: 10:04:46.5, start: 1320.000000, bitrate: 39 kb/s
Stream #0.0: Video: flv, yuv420p, 160×120 [PAR 0:1 DAR 0:1], 15.00 tb(r)
Stream #0.1: Audio: mp3, 22050 Hz, stereo, 40 kb/s
WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s
WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s
File ‘jokes.mpg’ already exists. Overwrite ? [y/N] y
Output #0, mpeg, to ‘jokes.mpg’:
Stream #0.0: Video: mpeg1video, yuv420p, 160×120 [PAR 0:1 DAR 0:1], q=2-31, 0 kb/s, 15.00 tb(c)
Stream #0.1: Audio: mp2, 22050 Hz, stereo, 22 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
[mpeg1video @ 0xb7d5a2f0]MPEG1/2 does not support 15/1 fps
Error while opening codec for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height

By: Sebastian

Sebastian — Wed, 07 Jan 2009 05:17:15 +0000

For reference:
With a 13 meg flv input file.
ffmpeg -i jokes.flv -ab 56 -ar 22050 -b 500 -s 320×240 jokes.mpg results in a 13 meg file that losses a LOT of quality. (BTW, my version of ffmpeg complains on the b parameter. “WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s” it should probably be 16)

/usr/bin/ffmpeg -i “/home/me/film.flv” -target ntsc-dvd -r 29.97 -s 720×480 -aspect 4:3 -b 8000k -mbd rd -flags +trell -mv0 -cmp -subcmp 2 “/home/me/film.mpg” results in a 184M file. (although the quality was almost BETTER than the flv which is kinda unexplainable) (note, I had to remove -flags +trell on windows because the windows binary of ffmpeg didn’t support the -flags parameter)

Using vlc media player’s stream output option was quicker and resulted in a 45M file that was pretty much an exact copy of the original.

Might be useful to someone else to know before hand. Thanks to all for there multiple methods skinning said cat.

By: guest

guest — Sun, 07 Dec 2008 14:26:48 +0000

Why not use vlc player to convert: open file->advanced alternatives: ettings->chose file and /home/you/vlcoutput.mpeg-->mark videocodec and soundcodec (leave default settings i you want) and then just hit OK twice.
sit back and whait for a wild and the convertion is finished
Kind Regards \\m

By: GagetPig

GagetPig — Wed, 01 Oct 2008 23:26:16 +0000

There is a front end to ffmpeg that makes this easier.

http://code.google.com/p/winff/

By: ??????

?????? — Thu, 11 Sep 2008 11:16:21 +0000

Thank you very much ,,