05723: Aviwrite uses a wrong resolution for Genesis games

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
05723	Misc.	Minor	Always	Oct 12, 2014, 18:51	Oct 12, 2014, 23:20

Tester	xinyingho	View Status	Public	Platform	MESS (Official Binary)
Assigned To		Resolution	Duplicate	OS	Windows Vista/7/8 (64-bit)
Status [?]	Closed			Driver	sega/mdconsole.cpp
Version	0.154	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	05723: Aviwrite uses a wrong resolution for Genesis games
Description	I've tried to do some Mega Drive game video captures using the aviwrite option and it turns out that the resolution displayed before launching a game and the resolution used by aviwrite are both the same one: 256224. This resolution is only one of those that Mega Drive games can use and actually they can change the current resolution dynamically as long as the machine supports it. Most games use 320224 as their native resolution, so it should be the one used by aviwrite. PAL games were displayed using 320240, but no games actually used the additional vertical estate. And then there are some games that use temporarily other resolutions, for instance: - Sonic 3D Blast opening video sequence is set to 256224, but all the remaining is displayed with the regular 320224. - Sonic 2 is set to 320448 in versus mode, else to 320224. So there are quite a few exceptions, but as 320224 accommodates to most games, it should be the resolution used by aviwrite.
Steps To Reproduce	1- launch this command line: mess64.exe megadrij -cart sonic -aviwrite sonic.avi 2- play with Sonic for a short while 3- try to run the resulting avi file: because of the wrong resolution, the game sequence frames are partially cut off on the right side.
Additional Information	By the way, to properly capture every sequence, I compiled 3 versions of MESS, one for each of the 3 resolutions mentioned above by simply editing 2 lines in mame/megadriv.c.
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No.11052 Tafoid Administrator Oct 12, 2014, 18:53 edited on: Oct 12, 2014, 23:19	Similar/same to this report: http://mametesters.org/view.php?id=5648 Acknowledged, but nothing has been done yet to correct this Using -snapsize command to pre-select reneder resolution might be your only workaround.