[MEncoder-users] "requested bitrate is too low." in 2-pass x264 encoding

[Jarred Nicholls]

Sent from my iPhone

On Apr 10, 2010, at 11:15 AM, Stroller  
<stroller at stellar.eclipse.co.uk> wrote:

>
> On 9 Apr 2010, at 14:48, Grozdan wrote:
>> On Fri, Apr 9, 2010 at 3:38 PM, Stroller <stroller at stellar.eclipse.co.uk 
>> > wrote:
>>> On 8 Apr 2010, at 17:34, Grozdan wrote:
>>>>
>>>> ... beware that mencoder is broken
>>>> outputting to anything but AVI, MPEG PS and RAW. I guess with  
>>>> lavf and
>>>> mp4 encoding WITHOUT b-frames, it'll do just fine but the moment  
>>>> you
>>>> add b-frames to your encode (and you're adding them since by  
>>>> default
>>>> they are enabled) it'll create a broken mp4
>>>
>>> Hi and sorry to bother you, but what's the supported method to  
>>> convert (say
>>> a DVD) to x264 .mp4 then, please?
>>>
>>> This should be done entirely in ffmpeg?
>>
>> If you want to use mencoder, then you only have 2 options
>>
>> 1) output to an AVI and then use something like MP4Box from gpac to
>> demux the AVI and mux it into an MP4, which is done like this
>>
>> ...
>>
>> If you want to make it easy on you and don't really care if you first
>> output to an AVI or to a RAW, then you can try my script (called
>> h264enc, google it) which automates this process (it outputs to AVI
>> first, though, later on you can choose mp4/mvk/ogm/ts...)
>
> Many thanks for your reply.
>
> I believe I've tried h264enc, but I didn't get along with the  
> options. I prefer undvd which uses the same method. This is not a  
> criticism of your program - just what suits me.
>
> The reason I asked was that I believe MP4Box is depreciated by my  
> distro. I was therefore thinking of writing my own script. I will  
> have to investigate why MP4Box has been depreciated, and see if  
> there are any alternatives.
>
> Thanks for your help.

Download the source from GPAC and compile it.  It's only one C file I  
believe within the GPAC suite, with it's own makefile :-)

Jarred

>
> Stroller.
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