编码错误，以下是编码设置：
-f mp4 -c:v av1_amf -rc qvbr -qvbr_quality_level 28 -frame_skipping true -g 1200 -b:a 96k -quality quality -fdkprofile hev2 -ac 2 -profile:v main -level auto "output.mp4"
下面是故障信息：
[info] ShanaEncoder v6.0.1.7
[info] FFmpeg v2023.08.08.190
[info] GameViewer Virtual Display Adapter
[info] OrayIddDriver Device
[info] AMD Radeon(TM) Graphics
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>> 编码开始时间：2024/10/27 2:11:17
[flv @ 000002833b7cc000] Invalid keyframes object, skipping.
[AVFormatContext @ 000002833cc17d40] Unable to choose an output format for 'mp4'; use a standard extension for the filename or specify the format manually.
[out#0 @ 000002833c2bd9c0] Error initializing the muxer for mp4: Invalid argument
Error opening output file mp4.
Error opening output files: Invalid argument
* [1] 编码错误已经发生。
我的硬件信息：radeon 780M，驱动程序版本：24.20.19.01-241011a-408380C-AMD-Software-Adrenalin-Edition