从捕获设备 Osprey 450e 流式传输 Ffmpeg 失败

Question

我想用 ffmpeg 从 Directshow 卡(Osprey Card 450e)捕获的实时流视频编码为 mp4 流多播。目前我有这个错误。

ffmpeg -f dshow -i video="Osprey-450e Video Device 1A":audio="Osprey-450e Audio Device 1A" -f mpegts -b:v 5120k -r 30 -c:v mpeg2video -c:a ac3 -b:a 256k udp://239.192.42.61:1234

[dshow @ 02c7f640] Could not run filter video=Osprey-450e Video Device 1A:Audio?Osprey-450e Audio Device 1A: Input/output error

ffmpeg 可以编码 Directshow 输入吗？

Answer 1

您的设备是交叉开关设备吗？ ffmpeg 当前不支持这些设备。

另见此处 - https://trac.ffmpeg.org/wiki/DirectShow

If you have a video capture card (ex: AverMedia, possibly some BlackMagic, though it may be a separate unrelated problem, and also some BlackMagic cards don't have the right inputs set up ask on the forum), it may not work (yet) out of the box with FFmpeg, as it lacks crossbar support presently. The work around currently is to install the AmerecTV software, which presents the capture card as directshow devices, then input the AmerecTV directshow devices into your FFmpeg.