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2490

answers:

2

anyone using ffmpeg

I have a fairly simple wmv exported by a user from movie maker with standard output and want to convert to .flv using

C:>ffmpeg -i "E:\Jab Core 4 Recounters.wmv" -vcodec flv "C:\Net Projects\SVN\IntegratedAlgorithmics\src\MediaAdmin\MediaAdmin\bin\Debug\Movies\Jab Core 4 Recounters.flv" -ar 44100

the output / error i receive is

FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --enable-gpl --enable-postproc --enable-swscale --enable-avfilt
er --enable-avfilter-lavf --enable-pthreads --enable-avisynth --enable-libfaac -
-enable-libfaad --enable-libmp3lame --enable-libspeex --enable-libtheora --enabl
e-libvorbis --enable-libxvid --enable-libx264 --enable-memalign-hack
  libavutil     49.15. 0 / 49.15. 0
  libavcodec    52.20. 0 / 52.20. 0
  libavformat   52.31. 0 / 52.31. 0
  libavdevice   52. 1. 0 / 52. 1. 0
  libavfilter    0. 4. 0 /  0. 4. 0
  libswscale     0. 7. 1 /  0. 7. 1
  libpostproc   51. 2. 0 / 51. 2. 0
  built on Mar 16 2009 16:09:18, gcc: 4.2.4 [Sherpya]
[wmv3 @ 0x1c0d490]Extra data: 8 bits left, value: 0

Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000
/1) -> 30.00 (30/1)
Input #0, asf, from 'E:\Jab Core 4 Recounters.wmv':
  Duration: 00:01:55.99, start: 5.000000, bitrate: 813 kb/s
    Stream #0.0: Audio: wmav2, 48000 Hz, stereo, s16, 192 kb/s
    Stream #0.1: Video: wmv3, yuv420p, 640x480, 586 kb/s, 30 tbr, 1k tbn, 1k tbc

Output #0, flv, to 'C:\Net Projects\SVN\IntegratedAlgorithmics\src\MediaAdmin\Me
diaAdmin\bin\Debug\Movies\Jab Core 4 Recounters.flv':
    Stream #0.0: Video: flv, yuv420p, 640x480, q=2-31, 200 kb/s, 90k tbn, 30 tbc

    Stream #0.1: Audio: libmp3lame, 48000 Hz, stereo, s16, 64 kb/s
Stream mapping:
  Stream #0.1 -> #0.0
  Stream #0.0 -> #0.1
[wmv3 @ 0x1c0d490]Extra data: 8 bits left, value: 0
[libmp3lame @ 0x1c0d8d0]flv does not support that sample rate, choose from (4410
0, 22050, 11025).
Could not write header for output file #0 (incorrect codec parameters ?)

i added th -ar switch when i got the error the first time

the codec info i have on the file is as follows

General
Complete name                    : E:\Jab Core 4 Recounters.wmv
Format                           : Windows Media
File size                        : 11.3 MiB
Duration                         : 2mn 0s
Overall bit rate mode            : Variable
Overall bit rate                 : 780 Kbps
Maximum Overall bit rate         : 949 Kbps
Encoded date                     : UTC 2009-03-07 07:02:41.121
Writing application              :  6.0.6000.16386 / Windows Movie Maker
Application                      : Windows Movie Maker 6.0.6000.16386

Video
ID                               : 2
Format                           : VC-1
Format profile                   : MP@ML
Codec ID                         : WMV3
Codec ID/Info                    : Windows Media Video 9
Codec ID/Hint                    : WMV3
Duration                         : 2mn 0s
Bit rate mode                    : Variable
Bit rate                         : 587 Kbps
Width                            : 640 pixels
Height                           : 480 pixels
Display aspect ratio             : 4/3
Frame rate                       : 30.000 fps
Resolution                       : 24 bits
Scan type                        : Progressive
Bits/(Pixel*Frame)               : 0.064
Stream size                      : 8.46 MiB (75%)
Language                         : en-us

Audio
ID                               : 1
Format                           : WMA2
Format profile                   : L3
Codec ID                         : 161
Codec ID/Info                    : Windows Media Audio 2
Description of the codec         : Windows Media Audio 9.2 - VBR Quality 90, 48 kHz, stereo 1-pass VBR
Duration                         : 2mn 0s
Bit rate mode                    : Variable
Bit rate                         : 186 Kbps
Channel(s)                       : 2 channels
Sampling rate                    : 48.0 KHz
Resolution                       : 16 bits
Stream size                      : 2.68 MiB (24%)
Language                         : en-us

i see alot of people with this issue with so solution or cause

any ideas would be helpful thanks in advance

A: 

For what little help it may be, you can see that the source audio is at 48khz, and flv is refusing it. ffmpeg is apparently ignoring your -ar flag. Your first step needs to be to resample the audio... you could try transcoding to some intermediary format to get the sample rate converted, and then transcode from there to flv.

Dave Gamble
any ideas what i could convert to get it it to flv eventually all within ffmpeg
Brandon Grossutti
Conceivably you could have two ffmpeg calls, input->temp, temp->flv.I imagine it's going to be a process of experimentation to find a good intermediary.My personal preference would be to strip the video out to one temp file (MOV/AVI?), and strip the audio to another (WAV?). Then manually resample the audio, and merge the two into your output FLV.
Dave Gamble
+2  A: 

In ffmpeg, options must prefix the input file they relate to. Move -ar 44100 to the front and it will work.

phihag
Hi - I am having similar issues with wmv files - have you tried this? Does it work?
undefined
@undefined yes, I stumbled over the same problem with a wmv file, found this stackoverflow question, solved it, and wrote it here a couple of days later
phihag