[FFmpeg-user] libx264 options through FFmpeg

[Thomas Worth]

On Tue, Jun 28, 2011 at 8:31 AM, Tim Nicholson <tim.nicholson at bbc.co.uk> wrote:
> On 22/06/11 06:43, Thomas Worth wrote:
>>
>> While I've historically used a standalone x264 binary to do encoding
>> by piping yuv420p from FFmpeg, I thought I'd try libx264 through
>> FFmpeg since it's certainly more convenient.
>>
>> [....]
>>
>> If I can safely pass all my options via -x264opts then I'll just use
>> that from now on and disregard FFmpeg's x264 interface.
>
> But what about options that require colon delimited parameters themselves
> such as "--sar 1:1"?

If I use a forward slash (sar=16/9), libx264 doesn't complain but it
also doesn't use the supplied ratio. It seems to default to "1/1"
every time.