[FFmpeg-trac] #3651(avcodec:new): Lagarith and UT Video Codec has Bad Performance
FFmpeg
trac at avcodec.org
Sun May 18 04:32:11 CEST 2014
#3651: Lagarith and UT Video Codec has Bad Performance
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Reporter: Zerowalker | Type:
Status: new | enhancement
Component: avcodec | Priority: normal
Keywords: | Version:
Blocking: | unspecified
Analyzed by developer: 0 | Blocked By:
| Reproduced by developer: 0
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Summary of the bug:
Not really sure if i am supposed to write these things here, as it's not
really a bug, but here goes.
LAV Filter use ffmpeg for Decoding, and hence i direct this here.
The performance in decoding Lagarith and UT Video Codec are extremely bad,
most of the time it's over 100% slower.
Originally i thought it was faster, either i have been mistaken or
something has happened.
However, worth noting, Lagarith is limited to 2 threads in it's original
decoder, however comparing the performance make this insignificant as
ffmpeg will use more and still not be at the same pace.
How to reproduce:
Pretty sure you can just use:
ffmpeg -i "lagarith.avi" -o "Raw.avi"
so just decode a lagarith file to raw, and you will see the performance,
than compare it to using the original decoder.
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Ticket URL: <https://trac.ffmpeg.org/ticket/3651>
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