5D2破解固件 可手動調整碼率？
不知道是不是真的?http://magiclantern.wikia.com/wiki/Bit_rate
h.264 qscale Edit
The Canon function mvrSetDefQScale(int16_t *) (2.0.8 0xff990188) sets the quality parameter to the camera's h.264 encoder. If the CF card is not able to keep up, the camera will display a buffer-level bar on the right side of the LCD and stop recording when it hits full. The parameter does not have any effect unless fixed bit rate encoding is selected via mvrFixQScale(int16_t *) (2.0.8 0xff9905d4).
The default q-scale is -8 in VBR mode and has a nominal 42 Mbps with the 2.0.8 firmware. The 24p tests were done with the camera on a tripod writing to a Lexar 400x UDMA 16 GB card with all Magic Lantern tasks disabled (no zebras, cropmarks, etc). qscales less than -12 occasionally stopped recording.
Q-scale FPS Mbps Notes
+8 30p 7 Mbps Very low quality
-9 24p 32 Mbps
-10 24p 41 Mbps
-11 24p 51 Mbps
-12 24p 59 Mbps
-13 24p 62 Mbps
-14 24p 66 Mbps Best, sustainable in 24p mode?
-15 24p 68 Mbps 2 buffer bars
-16 24p 76 Mbps Only a few seconds
Observations Edit
■24p seems to have less issues than 30p
■Locked-off shots seem less likely to trigger buffer overflows; amount of motion?
■Auto-exposure changes seems to lead to immediate overflows: shoot manual exposure mode
■-14 seems to be the best that can be sustained with the card with all other ML tasks running.
Test firmware Edit
■Download it from this ml-devel post 這樣錄影時間就要再變短了 看來很正呀, 有沒有詳細的教學? 使用方法是 下载 解壓 拷貝到CF卡根目錄 開機 選擇菜单的固件版本 選升级 OK。 不用担心，其實只是運行而已，不想用，關機就沒了。
我自己有試過升級後一片黑重開機恢復之前的不知道是不是要升級2.08版的韌體
我目前是2.07板沒成功之後我就沒試了
http://www.filmaker.cn/bbs/viewthread.php?tid=4375&extra=page%3D1&page=2
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