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| PoBear |
| Posted: May 3 2014, 01:49 PM |
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Advanced Member
Group: Members
Posts: 51
Member No.: 23022
Joined: 10-February 08
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Hi
I've been playing around with FFMPEG recently and had some surprising results, they are so out there that I am doubting that they are correct, but every time I run the test on different files I get similar results
I've done a test using VDub 1.10.4 and FFMPEG N-62525-g71f8cdc converting a 1.6GB mpeg-2 video in a .ts contained to DIVX using quality based conversion set to 2.
VDub takes 20-30 minutes, FFMPEG is taking less than 10.
I am really surprised by these results as I would have expected FFMPEG to be, at best, as fast as VDUB not 2-3 times faster.
Any thoughts |
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| dloneranger |
| Posted: May 3 2014, 03:55 PM |
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Moderator
Group: Moderators
Posts: 2366
Member No.: 22158
Joined: 26-September 07
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Well, you're not actually comparing the same things :-)
FFMpeg doesn't do divx compression, it does it's own compression to a thing that produces output that's compatible with divx, but it's completely different code
Same for decompression, it's not using the same codec code but it's own
That's not a 'bad thing' but they are not the same, so it's starting with an incorrect assumption
I have no idea if they are directly comparable at all tbh, how does file size and quality compare?
Also, as ffmpeg's all one program, it doesn't have to go through extra layers of codecs for decompression/compression so it can be optimised for speed to a greater extent
(virtualdub has to do much more 'throwing memory around' to get the same job done)
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MultiAdjust JoinWav WavNormalize FFMPeg Input Plugin v1827 UnSharpMask
Windows7/8 Codec Chooser
All FccHandlers Stuff inc. Installers for acm codecs AAC, AC3, LameMp3 |
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| evropej |
| Posted: May 7 2014, 05:54 PM |
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Advanced Member
Group: Members
Posts: 514
Member No.: 26523
Joined: 28-November 09
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I use freemake for compression.
I have tried others and they never compare to this ( vdub, handbrake, mediacoder, etc).
Although, they are moving from freeware to bloat, crapware route with nagging to donate or feature which require a key.
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| -vdub- |
| Posted: May 8 2014, 02:58 AM |
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Advanced Member
Group: Members
Posts: 613
Member No.: 27087
Joined: 24-February 10
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| QUOTE (evropej @ May 7 2014, 05:54 PM) | | Although, they are moving from freeware to bloat, crapware route with nagging to donate or feature which require a key. |
Shout it, Write it, Lose it
Avanti FFMpeg based no idea of the encoding speed, use mainly only for muxing, fixing bad files to play. Simple or complex as needed. Support for AviSynth scripts
Or maybe this just a test to see how long it takes to kill this one. Use for future reference  |
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