[ale] Challenge converting ogv video to flv

[arxaaron]

On 2012/10/04, at 13:10 , Lightner, Jeff wrote:

> That implies Youtube doesn't screw up video/audio synchronization.
> There's many a video I've seen where the poster complained about
> how Youtube had screwed it up even though it was OK before the
> upload.

Note that there is NOTHING in ANY of the proprietary digital video
formats that provides a SYNC reference of any kind for the audio and
video components.  It's insane, and as a pro in the media industry it
is a huge and constant frustration, but its to be expected when profit  
is
the singular motive and pushes quality is a consistent last place
consideration.

Dealing with You Tube, I was having even bigger problems with this
issues than usual and made several attempts at posting videos from
different source formats and such with equally unsatisfactory results.

I finally got reasonable sync in playback when I re-striped my audio
tracks at 44.1khz on the upload video.  Almost all digital video formats
use 16bit / 48khz for audio data, so the fact that You Tube doesn't  
handle
that properly is still heinous incompetence, but I don't know who to
report it to (assuming reporting it would do any good).

in peace
aaron



> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of  
> Jay Lozier
> Sent: Thursday, October 04, 2012 1:02 PM
> To: ale at ale.org
> Subject: Re: [ale] Challenge converting ogv video to flv
>
> On 10/04/2012 12:29 PM, Tom Freeman wrote:
>> I'm having a challenge with converting an ogv format screen capture
>> video to an avi or (preferably) flv format for posting to an online
>> course. I can get conversion to happen with either ffmpeg or mencoder
>> (I think I got that right). Unfortunately, I loose any semblence of
>> synchronization between the video and the audio portions of the clip
>> with every incantation I've located from searching the web for either
>> ffmpeg or mencoder.
>>
>> Capture is with gtk-recordmydesktop (I think that is right) on an  
>> ASUS
>> laptop running LUBUNTU 12.04, but I'm open to another capture  
>> approach.
>>
>> Thank you for your time
>>
>>
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> The lazy way is use YouTube. Upload the original, let YouTube  
> convert it, and then download the conversion or give the YouTube  
> address to the course.
>
> --
> Jay Lozier
> jslozier at gmail.com
>
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