[SOLVED] Video Capture over 2GB \ VOGONS

[SOLVED] Video Capture over 2GB

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First post, by Xtense

Posted on 2014-06-16, 13:15

Xtense Offline

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THIS ISSUE HAS BEEN SOLVED - If you are having trouble of this nature, please use SVN builds of DOSBox. The Wiki lists several locations where you can download them.

______

Hello,

I tried searching the forums and the Internet, but unfortunately I seem to be the only user with this problem 😉 .

It seems recording over 2GB of video capture in DOSBox 0.74 (official site release) causes the resulting AVIs to break (at least in Windows 7 (SP1, x64), I'm unable to check Linux) and, in addition, a massive slowdown of the emulator itself once the capture rolls over 2GB and the file starts overwriting itself. This makes recording long sessions impossible (like, for instance, a run through Ultima Underworld or something). The log hasn't been helpful in this regard, only marking the start and end of recording.

Is this a bug with DOSBox itself, or maybe a system issue? Has it perhaps been fixed in SVN builds already?

Best Regards,
Xtense

[EDIT]

Double-checked with DOSBox 0.74 (W7 SP1 x64). The file maxes out exactly at 2,157,132,898 bytes, after that, no new bytes are appended and the file corrupts itself apparently by writing new frames from the beginning of the file. Check with the most recent SVN build (EmuCR-Dosbox-r3860.7z) is running right now. Will update once I pass 2GB.

Last edited by Xtense on 2014-06-16, 16:15. Edited 1 time in total.

Reply 1 of 3, by Jorpho

Posted on 2014-06-16, 15:14

Jorpho Offline

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Xtense wrote:
or maybe a system issue?

If you are attempting to write to a FAT32-formatted hard drive, then yes, it is definitely a system issue, as files larger than 2GB require an NTFS-formatted partition.

Reply 2 of 3, by Xtense

Posted on 2014-06-16, 16:13

Xtense Offline

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Jorpho wrote:
If you are attempting to write to a FAT32-formatted hard drive, then yes, it is definitely a system issue, as files larger than 2GB require an NTFS-formatted partition.

The partition was NTFS-formatted, but it was indeed an issue with the release version of 0.74 - recording with the latest SVN build has been successful, the file passed 2GB with no problem and I ended recording at 4GB - the file was fully readable and parsable by editors.

Ah well, yet another issue that could have been fixed by more thorough experiments 😉 . It might be a good idea to add this information somewhere relevant where search engines will be able to index it, I have seen a lot of people having trouble of this nature, especially lets-players and the like.

Best regards,
Xtense