为什么Express Encoder会丢帧? [英] Why frame loss by Express Encoder?
问题描述
我有快速编码器捕获视频时丢帧的问题
I have a problem that frame loss when I capture videos by Express Encoder
3 DeckLink Studio,我们希望捕获视频,其速率为20Mbps ,
3 with DeckLink Studio,and we hope capture videos ,whose rate 20Mbps,
尺寸1920 * 1080和输出格式VC_1。
size 1920 * 1080 and output format VC_1.
 我没有找到原因,请给我一些建议。谢谢。
I do not find the reasons,Please give me some advice.Thank you .
详细信息:
信号源是1080i
高清输出
采集卡:黑魔法DeckLink工作室
Capture Card: black magic DeckLink studio
系统XP + SP3
System XP + SP3
硬件配置:
cpu:intel E5520 X2
cpu: intel E5520 X2
内存:4G
硬盘:1.5T RAID5
HDD: 1.5T RAID5
图形:NVIDIA FX580
Graphics: NVIDIA FX580
谢谢。
推荐答案
下午好
我首先要看的是捕获会话期间的CPU利用率。 我怀疑,根据您分享的PC规格以及尝试以20Mbps捕获1080,您的PC可以达到极限。您的编码配置文件听起来有点
为硬件征税。
The first thing I'd look at is CPU utilization during the capture session. I suspect, with the PC specifications you've shared and an attempt to capture 1080 at 20Mbps, you're at the limits of what your PC can do. Your encoding profile sounds a bit taxing for the hardware.
您可以考虑,将比特率降低25%然后监控帧丢失以尝试对您的功能进行基准测试机器。
You may consider, decreasing the bitrate by 25% then monitor the frame loss in an attempt to benchmark the capabilities of your machine.
1920x1080 @ 15Mbps甚至1920x1080 @ 10Mbps
1920x1080 @ 15Mbps or even 1920x1080 @ 10Mbps
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