[FFmpeg-devel] [PATCH] lavfi/fade: Add ability to do video fade based on time

[Andy n Deanna]

On 4/18/2013 7:59 PM, Clément Bœsch wrote:
> On Tue, Apr 16, 2013 at 10:20:13PM -0400, Andy n Deanna wrote:
> +    { "start_time",  "Number of seconds of the beginning of the effect.",
> +                                                    OFFSET(start_time),   AV_OPT_TYPE_DOUBLE, {.dbl = 0.   }, 0, 7*24*60*60,FLAGS },
> Here and in the following, you can use AV_OPT_TYPE_DURATION.
AV_OPT_TYPE_DURATION appears to be a UINT64. Is that correct? I need a 
float/double.

>> +    { "st",          "Number of seconds of the beginning of the effect.",
>> +                                                    OFFSET(start_time),   AV_OPT_TYPE_DOUBLE, {.dbl = 0.   }, 0, 7*24*60*60,FLAGS },
>> +    { "duration",    "Duration of the effect in seconds.",
>> +                                                    OFFSET(duration),     AV_OPT_TYPE_DOUBLE, {.dbl = 0.   }, 0, 24*60*60,  FLAGS },
>> +    { "d",            "Duration of the effect in seconds.",
Just realized that I inserted new options in the middle of existing 
options. Does that break the shortcut?

>> +                                                    OFFSET(duration),     AV_OPT_TYPE_DOUBLE, {.dbl = 0.   }, 0, 24*60*60,  FLAGS },
>>       { "alpha",       "fade alpha if it is available on the input", OFFSET(alpha),       AV_OPT_TYPE_INT, {.i64 = 0    }, 0,       1, FLAGS },
>>       { NULL },
... and working on the other issues you mentioned...

Thanks,
Andy