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Old 6th August 2015, 14:37   #1  |  Link
steve_warrior
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Join Date: Aug 2014
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Does ffmeg based x264 support 4k(3840 x 2160) encoding ?

Hi,
I am trying to encode a 4K video from my ffmpeg, but it gives me crash.
I have read the specs of H.264, it says Level-5.2 supports 4K. Even if i give Level-5.2, there is a crash.
Can somebody please tell me, does the ffmpeg support 4K Encoding

-Thanks in advance
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Old 6th August 2015, 14:41   #2  |  Link
sneaker_ger
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Are you running out of memory? Try a 64 bit build of ffmpeg.
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Old 6th August 2015, 14:49   #3  |  Link
steve_warrior
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Thanks for the reply. Yes thats 64 bit build. Is there any way to confirm 64 bit build ?
Can you please let me know weather ffmpeg supports 4k encoding.
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Old 6th August 2015, 16:24   #4  |  Link
vivan
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Of course it does, I see no reason why it shouldn't (it's not "professional" crapware that cost few thousand bucks ). Just checked and it encoded it without any problem.

You can check it in the task manager, if ffmpeg has *32 in the task manager while it's running it isn't x64. There might be a simplier way, but I don't know it.

Yeah, running out of memory is the most likely problem. What amount of ram do you have? Number of cores? x264 preset you are using?
Memory usage scales with number of threads, so usually the simplest way is to lower number of threads. You can also try faster presets if you're fine with lower encoding efficiency.
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