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28th November 2016, 00:46 | #1 | Link |
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videorecording xavc s and then reencode?
Hi. I don't know if i'm in the right section, but i've a question.
I've buyed a sony handycam hdr cx 405. This camera has the followings best record settings: -AVCHD 1080p 60fps 28Mbps -XAVC S 1080p 60fps 50Mbps So i'd like keep the best capture quality and then reencode to save space keeping very good quality. So, i thoght to record in XAVC S and than reencode using handbrake with 18 crf and high profile. Or is better capture videos directly with lower bitrate(using AVCHD) and don't reencode? What do you suggest? Thanks |
28th November 2016, 20:52 | #3 | Link |
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I'd record XAVC S and later re-encode on the PC (of course archiving highest quality without re-encoding would be preferable). Encoding on the PC using HandBrake/x264 will likely be better than the real-time AVC encoder embed into the camera.
But: why don't you just test it? |
28th November 2016, 22:15 | #7 | Link |
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Probably neglible for your use case.
In detail: https://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Levels More bitrate and bigger DPB. |
29th November 2016, 13:37 | #9 | Link |
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speaking from experience having sony gear with AVCHD, their encoder isn't the best at distribution of the bits, and I find myself sometimes wishing it had more bitrate at 1080p25 @ 24mbps, even more so with the 1080p50 @ 27 / 28 mbps I have on my camera.
So for sure record in the highest possible, the onboard encoder isn't at good ( at all ) as x264. If you re-encode for archival with crf 18 you'll be safe. If you want to edit the stuff, better to edit it in XAVC-S and encode/archive the final result. You may never know what information is lost (that you don't really see) when re-encoding. That being said, for home-movie stuff I can't imagine it being a problem. |
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