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Old 03-31-2015, 08:00 PM   #16
seasons
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I'll say it again: try vp8
https://en.wikipedia.org/wiki/WebM
 
Old 03-31-2015, 10:06 PM   #17
wh33t
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Quote:
Originally Posted by seasons View Post
I'll say it again: try vp8
https://en.wikipedia.org/wiki/WebM
Code:
avconv -i input.mp4 -s hd720 -acodec libvorbis -q:a 3 -vcodec -q:v 10 libtheora -f ogv output.ogv
That sounds great. How I would modify this command to use vp8, should I also be using that OPUS audio codec? I just want decent looking video that streams well and is widely supported and minimal storage requirements.
 
Old 04-01-2015, 06:50 AM   #18
maples
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If you're aiming for a certian file size, I've heard of the "-fs" option which sets the target output size.

http://www.linuxquestions.org/questi...1/#post5338529

As for encoding using VP8/Webm, try
Code:
avconv -i input.mp4 -s hd720  output.webm
 
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Old 04-01-2015, 09:12 PM   #19
wh33t
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Quote:
Originally Posted by maples View Post
If you're aiming for a certian file size, I've heard of the "-fs" option which sets the target output size.

http://www.linuxquestions.org/questi...1/#post5338529

As for encoding using VP8/Webm, try
Code:
avconv -i input.mp4 -s hd720  output.webm
I did that, it made a 4mb file for 17 seconds of video which looked terrible. I'll try again with q:v - 10 to see if that ups the quality. In the mean time I have another issue.

While transcoding one specific video I get this:

Code:
missing picture in access unit=       3kB time=0.62 bitrate=  44.2kbits/s
[h264 @ 0x23dba00] missing picture in access unit
    Last message repeated 2 times
I'm assuming it means that the computer producing the video had some cpu lag or something. At any rate, is there a way to suppress this error message as it breaks a PHP script I wrote to run the command.
 
  


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