[FFmpeg-user] Out of virtual memory (swap, I assume) = telecine+setpts combination

[Mark Filipak (ffmpeg)]

On 02/04/2021 04:50 PM, Paul B Mahol wrote:
> Well, perhaps your command queues too much frame and that is bad.

Perhaps?

ffmpeg -i source.mkv -map 0 -filter_complex "telecine, setpts=N*1001/30000/TB" -codec:v libx265 
-x265-params crf=20:qcomp=0.60 -codec:a copy -codec:s copy "with both telecine and setpts.mkv"

What does "...perhaps your command queues too much frame" mean?


> On Thu, Feb 4, 2021 at 10:34 PM Mark Filipak (ffmpeg) <markfilipak at bog.us>
> wrote:
> 
>> On 02/03/2021 12:23 AM, Carl Zwanzig wrote:
>>> On 2/2/2021 2:52 PM, Mark Filipak (ffmpeg) wrote:
>>>> If that's true, what's eating the swap? Transcoding parts 1, 2, 3, & 4
>> all succeeded when running
>>>> concurrently. Transcoding part 5 fails, even when ffmpeg is the only
>> app running.
>>>
>>> Out of curiosity, have you tried looking at the file with an mkv
>> analyzer like MediaInfo, Elecard's
>>> analyzer* or maybe another one? (Is there metadata towards the end of
>> the file containing junk info?)
>>>
>>> How does it behave if you drop the minterpolate or one of the other
>> filters, output to a null file,
>>> or use a different output codec? (Anything to try isolating the problem.)
>>
>> If rising memory allocation and rising swap commit indicates a memory
>> leak, then the telecine filter
>> has a memory leak.
>>
>> **WRONG**
>>
>> OHMYGOD! The problem isn't telecine. The problem isn't setpts. The problem
>> is telecine + setpts in
>> combination!
>>
>> **CORRECTION**
>> If rising memory allocation and rising swap commit indicates a memory
>> leak, then the combination of
>> telecine and setpts filters provokes a memory leak.
>>
>> My trouble packet is 'telecine+setpts memory leak.zip'. I can't put it in
>> dropbox because dropbox
>> has now added a 100 MB limit in an attempt to force me to pay.
>>
>> 'telecine+setpts memory leak.zip' is 328 MiB.
>>
>> With no way to get 'telecine+setpts memory leak.zip' into the developers'
>> hands, I guess all my
>> efforts will go to naught.
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