We use f4vpp to process MP4 files after they are recorded by FMS. A couple of times now we have noticed that the output of f4vpp stops at exactly 2GB.
Have others here seem this same problem? Is this a limitation of f4vpp? Is it a bug or dependent on our system perhaps?
In case it matters: we use f4vpp on linux.
I hope someone can shed some light on this soon as this is really inconvenient. Thanks in advance for any help.
Hi GRO_NIC - sorry for delay in reverting - i was off - just give me couple of days and i'll revert to for sure. Dont worry its on my radar and not slipped - its just that there were few other things my way.
Allright, good to know that it is still on your radar .
Some additional info: I have just tested postprocessing a 2.7 GB file on a Windows 7 machine and that does work. Apparently the problem lies in the Linux executable. For a moment I though that it might be the filesystem but then off course that file system also contains the original file so it can handle 2GB+ files.
Yes i had been in discussion with Developers but i fell sick and could not get back to you. As per them there should not be any differnece between Windows and Linux executables. I would have liked to try it myself - does it happen with nay file greater than 2GB on linux or only this specific file - is it possible for you to host it somewhere from where i can download it.
Sorry to hear that, hope you are feeling better now.
It is consistent for all files above 2GB on that sytem.
Some info: It is a 64-bit Debian Squeeze system. To support the 32-bit executable f4vpp we have had to install ia32-libs. We have however run the tool on a 32-bit Debian Lenny previously where we had the same problem.
If you wish I could supply you with a 2GB+ file that has actually been a problem for us. As said though, it is consistent for any file above 2GB (in our situation at least).
use ffmpeg, it is a lossless conversion to .mp4 or .f4v.. Alternatively you can set diskmanagement and segmentduration to null in Application.xml to create 1 .mp4 or .f4f file eliminating the need to package all of segments into 1 file. You can t hen also use ffmpeg on the 1 segment file to convert to .mp4 or .f4v losslessly as well to remove keyframe interval metadata.