[FFmpeg-user] Video Conversion Issues

[Henk D. Schoneveld]

On 15 Nov 2013, at 14:15, Govind Raj <govind.durai at gmail.com> wrote:

> After trying to execute the syntax u said above i got the following
> output(error). May i know what version u r using, i highlighted my version
> here.
> 
> C:\Users\Administrator\Desktop\Kodak\FFmpeg-N-49957-g8c95d17\FFmpeg-N-49957-g8c9
> 5d17>ffmpeg -i sampleWMV.wmv -codec:v libx264 -crf 18 -preset veryslow
> -tune fli
> m -codec:a libfaac -ab 128k out.flv
> *ffmpeg version N-58015-g8cdf4e0 Copyright (c) 2000-2013 the FFmpeg
> developers*
> *  built on Nov 10 2013 18:07:36 with gcc 4.8.2 (GCC)*
>  configuration: --enable-gpl --enable-version3 --disable-w32threads
> --enable-av
> isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
> --enab
> le-iconv --enable-libass --enable-libbluray --enable-libcaca
> --enable-libfreetyp
> e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
> --ena
> ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
> --enable-l
> ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
> --enable-libsp
> eex --enable-libtheora --enable-libtwolame --enable-libvidstab
> --enable-libvo-aa
> cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
> --enable-libwavp
> ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
>  libavutil      52. 52.100 / 52. 52.100
>  libavcodec     55. 41.100 / 55. 41.100
>  libavformat    55. 21.100 / 55. 21.100
>  libavdevice    55.  5.100 / 55.  5.100
>  libavfilter     3. 90.102 /  3. 90.102
>  libswscale      2.  5.101 /  2.  5.101
>  libswresample   0. 17.104 /  0. 17.104
>  libpostproc    52.  3.100 / 52.  3.100
> [h264 @ 0000000003f27720] missing picture in access unit with size 9
>    Last message repeated 39 times
> Input #0, asf, from 'sampleWMV.wmv':
>  Metadata:
>    major_brand     : isom
>    minor_version   : 1
>    compatible_brands: isomavc1
>    encoder         : Lavf55.21.100
>  Duration: 01:38:36.99, start: 0.000000, bitrate: 1091 kb/s
>    Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv,
> bt709), 128
> 0x544 [SAR 1:1 DAR 40:17], 24.42 fps, 23.98 tbr, 1k tbn, 47.95 tbc
>    Stream #0:1: Audio: aac ([255][0][0][0] / 0x00FF), 48000 Hz, stereo,
> fltp, 9
> 3 kb/s
> Unknown encoder ‘libfaac’
You need to change libfaac with libvo_aacenc
You’re version has libvo-aacenc instead of libfaac compiled in.
> 
> 
> On Thu, Nov 14, 2013 at 10:32 PM, Tom Evans <tevans.uk at googlemail.com>wrote:
> 
>> On Thu, Nov 14, 2013 at 4:43 PM, Govind Raj <govind.durai at gmail.com>
>> wrote:
>>> May i know the syntax to convert WMV to FLV and MPG to FLV
>>> 
>> 
>> You need to choose those options for yourself. The FLV format supports
>> multiple video and audio codecs, you will need to choose codecs for
>> both audio and video and tune the options so that the right size and
>> quality of transcode is produced.
>> 
>> Purely as an example, FLV supports H264 and AAC audio, so this might
>> work, depending upon the source file:
>> 
>> ffmpeg -i source.wmv \
>>  -codec:v libx264 -crf 18 -preset veryslow -tune film \
>>  -codec:a libfaac -ab 128k out.flv
>> 
>> For more details on what options you can use, you can refer to the
>> documention:
>> 
>> http://ffmpeg.org/ffmpeg.html
>> 
>> Cheers
>> 
>> Tom
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>> ffmpeg-user mailing list
>> ffmpeg-user at ffmpeg.org
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>> 
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