[MEncoder-users] encoding 3gp, mp4, wmv

[dtra-fyf]

Michel Bardiaux wrote:
> dtra wrote:
> 
>> Michel Bardiaux wrote:
>>
>>> dtra wrote:
>>>
>>>> Michel Bardiaux wrote:
>>>>
>>>>> dtra wrote:
>>>>>
>>>>>> hi all
>>>>>>
>>>>>> i'm after an rpm that we can use for video encoding 3gp, mp4 (for 
>>>>>> mobile devices), and wmv (for web)
>>>>>> i tried ffmpeg, but couldn't find an rpm that supported the amr_nb 
>>>>>> plugin, which i need to convert from and to 3gp
>>>>>>
>>>>>> i know ffmpeg will work if i can compile from src, cos i did use 
>>>>>> that, 
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> And the wmv's produced work for M$ WMP? What command line do you use?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> it would have been ffmpeg -i file.mp4  -b 80 -ar 8000 -ab 12  
>>>> -vcodec wmv1 -acodec mp3 out.wmv
>>>>
>>> Wont work for me:
>>>
>>> ffmpeg -i utc_1434.mpg -b 80 -ar 8000 -ab 12  -vcodec wmv1 -acodec 
>>> mp3 out.wmv
>>> ffmpeg version CVS, build 3211264, Copyright (c) 2000-2004 Fabrice 
>>> Bellard
>>>   configuration:  --enable-mp3lame --disable-strip --enable-amr_nb 
>>> --enable-a52 --enable-gpl --enable-amr_wb --disable-shared 
>>> --enable-libgsm
>>>   built on Aug  1 2005 10:51:57, gcc: 2.95.4 20011002 (Debian 
>>> prerelease)
>>> Input #0, mpeg, from 'utc_1434.mpg':
>>>   Duration: 00:00:57.0, start: 92564.370489, bitrate: 668 kb/s
>>>   Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 352x288, 25.00 fps, 
>>> 104857 kb/s
>>>   Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, mono, 32 kb/s
>>> Output #0, asf, to 'out.wmv':
>>>   Stream #0.0: Video: wmv1, yuv420p, 352x288, 25.00 fps, q=2-31, 80 kb/s
>>>   Stream #0.1: Audio: mp3, 8000 Hz, mono, 12 kb/s
>>> Stream mapping:
>>>   Stream #0.0 -> #0.0
>>>   Stream #0.1 -> #0.1
>>> [wmv1 @ 0x83c26d0]removing common factors from framerate
>>> Error while opening codec for output stream #0.1 - maybe incorrect 
>>> parameters such as bit_rate, rate, width or height
>>>
>>> Either you actuallu used another command line, or the problem is 
>>> different properties for your source mp4 and my source mpg. Could you 
>>> retry, and post the full output? TIA.
>>>
>> hi
>> unfortunately i can't help you out there
>> i haven't got a test server with ffmpeg installed from src
>> that would definitely be the command line i used
>> my source mp4 would be like the type you get from phones
>> but i was able to do it with any video i had
>>
>> i really am a novice, but it's your output audio stream that is having 
>> the problem right?
>>
>> dave
>>
> 
> I fiddled a bit with the audio output parameters and this works:
> 
> ffmpeg -i utc_1434.mpg -b 80 -vcodec wmv1 -acodec mp3 -y out.wmv
> ffmpeg version CVS, build 3211264, Copyright (c) 2000-2004 Fabrice Bellard
>   configuration:  --enable-mp3lame --disable-strip --enable-amr_nb 
> --enable-a52 --enable-gpl --enable-amr_wb --disable-shared --enable-libgsm
>   built on Aug  1 2005 10:51:57, gcc: 2.95.4 20011002 (Debian prerelease)
> Input #0, mpeg, from 'utc_1434.mpg':
>   Duration: 00:00:57.0, start: 92564.370489, bitrate: 668 kb/s
>   Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 352x288, 25.00 fps, 
> 104857 kb/s
>   Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, mono, 32 kb/s
> Output #0, asf, to 'out.wmv':
>   Stream #0.0: Video: wmv1, yuv420p, 352x288, 25.00 fps, q=2-31, 80 kb/s
>   Stream #0.1: Audio: mp3, 48000 Hz, mono, 64 kb/s
> Stream mapping:
>   Stream #0.0 -> #0.0
>   Stream #0.1 -> #0.1
> [wmv1 @ 0x83c26d0]removing common factors from framerate
> Press [q] to stop encoding
> frame= 1501 q=0.0 Lsize=       1kB time=60.0 bitrate=   0.1kbits/s
> video:1434kB audio:469kB global headers:0kB muxing overhead -99.971732%
> 
> and plays OK in WMP. The difference being suppression of "-ar 8000 -ab 
> 12". With -ar 8000 put back in, OK (I mean both ffmpeg and WMP). With 
> -ab 64, or -ab 32, or -ab 16, or even -ab 8, OK. Its -ab 12 that ffmpeg 
> rejects. Maybe you actually used -ab 16 or -ab 32, or you used a version 
> of mp3lame that supports 12kbits while mine (debian woody, liblame0 
>                   3.96-woody1) does not. In any case, thanks a lot.
> 
no worries, i definitely know that was the command line i used though
cos it was in a script i was working on from a while back which i 
haven't touched for a couple of months
i guess the lamemp3 most likely is the difference, i just downloaded and 
installed of the lame site