[PD] pix_record continues to record, even with rendering turned off

[Antonio Roberts]

> of course.
> you need to bang [pix_record] in the desired framerate.
> with "auto 1", it will always record in your current gem framerate, which is
> 20fps.
Thanks!

And with that I think I've identified the actual bug here. I still
can't override that framerate by changing the option in the codec
setting

On 30 December 2012 01:11, Marian Weger <mail at marianweger.com> wrote:
>
>> No matter what framerate I set I still get a framerate of 20 (or whatever
>> the
>> original video was (I think)).
>
>
> of course.
> you need to bang [pix_record] in the desired framerate.
> with "auto 1", it will always record in your current gem framerate, which is
> 20fps.
>
> cheers,
> marian
>
>
>
>> Before finally diagnosing this as a
>> bug, is there a specific order to how the messages should be sent?
>> This is my order, using the pix_record help file:
>>
>> 1 - create the gem window
>> 2 - open the video file
>> 3 - Choose the codec
>> 4 - change the options of the codec (via set)
>> 5 - open a location to save the file
>> 6 - record
>> 7 - set auto record [auto 1(
>>
>> Is this right?
>>
>> Thanks
>>
>> Antonio
>>
>>
>> On 29 December 2012 19:41, IOhannes m zmölnig <zmoelnig at iem.at> wrote:
>>>
>>> On 12/29/2012 16:20, Antonio Roberts wrote:
>>>>>
>>>>> switching off the [gemhead] will not push new frames into your
>>>>> [pix_record],
>>>>> but it will not halt a "local time" (this is never what [gemhead]
>>>>> does).
>>>>
>>>>
>>>> Ah, I see now! Although this is expected behaviour, I still think it'd
>>>> be useful to be able to pause recording (at least in this scenario)
>>>
>>>
>>>
>>> bien sur.
>>>
>>>
>>>>> - either manually force the framerate to a constant value when writing
>>>>> the
>>>>> file (it might well be (haven't checked yet) that you actually cannot
>>>>> force
>>>>> the framerate to a given value, which indeed could be considered a bug)
>>>>
>>>>
>>>> I've checked the help file and options and of pix_record and there
>>>> doesn't appear to be any options to set the frame rate. Please correct
>>>> me if I'm wrong!
>>>
>>>
>>> aye, it's a bit undocumented :-( [*]
>>>
>>> like with [pix_video], you can set a number of properties specific to the
>>> used backend/codec.
>>> when selecting a specific codec, you should get a list of supported
>>> properties for the selected setting on the info-outlet of [pix_record]
>>> (that's the 3rd outlet).
>>>
>>> e.g. slecting [codec mjpa( gives me available properties "framerate",
>>> "jpeg_quality" and "jpeg_usefloat".
>>> you can then set these properties using a "set" message:
>>> [set framerate 20(
>>> should give create a film with a fixed framerate of 20fps, whereas
>>> [set jpeg_quality 15(
>>> will give you low quality jpeg compression.
>>>
>>>
>>>
>>>> I did a bit of further investigating and it appears that the framerate
>>>> for the videos created by my patch/pix_record are craziliy high!
>>>> Here's the sample video that I used
>>>> http://dl.dropbox.com/u/350846/test.mov I ran the following command to
>>>> get some information from the file mplayer -vo null -ao null -frames 0
>>>> -identify test.mov
>>>>
>>>> The important part of that information is that the fps is 1000000.000.
>>>> Something isn't right there...
>>>
>>>
>>> hmm, i get:
>>> $ qtinfo test.mov | grep rate
>>>      rate 0.608175 [1000000:1644263] not constant
>>>
>>> which sounds plausible to me.
>>> might be, that mplayer doesn't report the correct framerate (only the
>>> numerator, not the denominator)
>>>
>>> mfgasdr
>>> IOhannes
>>>
>>> [*] patches contributing to the docs are welcome.
>>>
>>>
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>>
>>
>>
>
>
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