[CinCV TNG] Fwd: to create time scaled media

Frederic Roenitz ml1 at aimvis.de
Mon Sep 11 16:38:42 CEST 2017


ppps: direct compareison:

cinelerra-gg_mainWindow-screenshot03_directComparison.png


pppps: This should be the last 'ps', sorry.


Kind greetings

Frederic


Frederic Roenitz wrote on 11.09.2017 16:27:
> ps: I attached cinelerra-gg_mainWindow-screenshot02.png
>
> it visualises the audio dropouts.
>
>
> pps: the speed handles shown in
> cinelerra-gg_mainWindow-screenshot.png from my previous mail
> are either speed 1 or speed 60.
>
>
> Kind greetings
>
> Frederic
>
>
> Frederic Roenitz wrote on 11.09.2017 16:19:
>> Thank you GG,
>>
>> I had a close look at the files you uploaded.
>>
>> And sorry, I wasn't clear enough.
>>
>> I saw two problems and described the important problem second ...
>>
>>
>> So please let me start again, but this time in more detail:
>>
>>
>> The important problem (no sound when back at speed 1):
>>
>>
>> 0 1 2 3
>> |__|__|__|__
>>
>> speed 60 x--x
>> \
>> \
>> speed 1 x-----
>>
>> selection |-----|
>>
>>
>> rendered 'selection' has no sound
>>
>>
>>
>> The secondary problem (audio dropouts):
>>
>> (In my first report, I hoped the audio dropouts were easier to
>> describe and would solve the main problem.)
>>
>> While at speed 60 there are audio dropouts as my example below 'How to
>> reproduce' shows, too.
>>
>>
>>
>> How to reproduce
>> ================
>>
>> I used audacity to generate a one hour sine tone at 110Hz and saved it
>> as 110Hz.ogg.
>>
>> (110Hz because the officially audible range for humans is about 16 Hz
>> to 20 kHz and we usually can hear 110Hz, 100*110Hz and everything in
>> between. 110Hz: speed 1; 100*110Hz: speed 100.)
>>
>> With cinelerra-gg, 110Hz.ogg and the titler plugin I generated a one
>> hour video at 160x120pixels and rendered it to 110Hz.mp4.
>>
>> I opened 110Hz with cinelerra-gg (o, replace current project).
>>
>> Then I have put some speed handles into the timeline: Please have a
>> look at the attached screenshot (it's similar to the above pictogram)
>>
>> Everything is as expected up to here.
>>
>> render selection
>>
>> the rendered result is the attached file: 110Hz_speeded_renderResult.mp4
>>
>>
>> For 110Hz_speeded_renderResult.mp4 I would expect to always hear a
>> sine sound with no interruptions.
>>
>> But the audio is full of "silent holes".
>>
>>
>> Please have a look (and listen) at 110Hz_speeded_renderResult.mp4.
>>
>>
>>
>>
>> related but not as important as the main problem:
>> =================================================
>>
>> Could you make the Titler with 'Stamp timecode' be affected by speed
>> autos?
>>
>> How can I easily see which value a speed handle has? Currently I can
>> drag it a bit and look at the status bar and guess how far I dragged
>> it. Or I can right click -> speed -> click the fader nob. Both ways
>> are quite complicated.
>>
>>
>>
>> Kind greetings
>>
>> Frederic
>>
>>
>>
>> _______________________________________________
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>> Cinelerra at lists.cinelerra-cv.org
>> http://lists.cinelerra-cv.org/cgi-bin/mailman/listinfo/cinelerra
>
>
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