[FFmpeg-user] having trouble encoding mov to mp4 H.264 level 3.0 baseline for HTML5 iOS

[Antony Peiris]

> There's just 'aac' but that is pretty poor in terms of quality.  There
> are also other AAC encoder libraries available.  It doesn't look like
> they were enabled either.  If you're going to compile, have a look at
> ./configure --help to see what is available

libfaac is not installed on my system though. I tried looking it up, but 
can't seem to find any reliable information on this. I am wondering if I 
will run into these issues when trying to create ogg/ogv files later on, 
also for the HTML5 video.

I installed this: |http://downloads.sourceforge.net/faac/faac-1.28.tar.gz|

However, I still get the message that libfaac is not found. Also did 
enable nonfree.

On 19/02/2013 5:51 PM, James Darnley wrote:
> On 2013-02-19 13:08, Antony Peiris wrote:
>>> Did you try the other one (the first one) I posted?
>>>
>>>>>> ffmpeg -y -i in.mov -filter:v scale=640:-1 -c:v libx264 -preset:v
>>>>>> slow -profile:v baseline -x264opts
>>>>>> "level=3.0:vbv-maxrate=750:vbv-bufsize=3750:ref=1" -b:v 500k -r:v
>>>>>> 25/1 -force_fps -movflags faststart -c:a libfaac -b:a 80k -pass X
>>>>>> out.mp4
>> Not at first, but I did try now. Initially I got an error about -pass
>> since it is expecting a number and not X. So I changed the command like so:
>>
>>
>> ffmpeg -y -i in.mov -filter:v scale=640:-1 -c:v libx264 -preset:v
>> slow -profile:v baseline -x264opts
>> "level=3.0:vbv-maxrate=750:vbv-bufsize=3750:ref=1" -b:v 500k -r:v
>> 25/1 -force_fps -movflags faststart -c:a libfaac -b:a 80k*-pass 2*
>> out.mp4
> You need to run with -pass 1 first then -pass 2
>
>> Just to see if it would work. I assume 2 passes? Next, I got the
>> following error: Unknown encoder 'libfaac'
>>
>> Does this mean I have to recompile ffmpeg with libfaac, and if so how? I
>> previously followed these instructions to compile:
>>
>> http://ffmpeg.org/trac/ffmpeg/wiki/CentosCompilationGuide
>>
>> Is there a compatible encoder that I can use other than libfaac,
>> alternatively?
> There's just 'aac' but that is pretty poor in terms of quality.  There
> are also other AAC encoder libraries available.  It doesn't look like
> they were enabled either.  If you're going to compile, have a look at
> ./configure --help to see what is available
>
>
>
>
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