NVDecoder一次解码多个帧
我们正在使用以下GSTREAMER管道来解析RTSP流：
gst-launch-1.0 rtspsrc port-range = 5000-5100 location =“ rtsp：// ..” rtsp：// ..“ latency = 300 is-live = true！队列 ！ rtph264depay名称= depayer！视频/x-h264，stream-format =字节流，对齐= au！ H264Parse！视频/x-h264，stream-format =字节流，对齐= au！ AppSink Name = MySink Sync = true
然后，我们使用NVIDIA视频编解码器SDK解码器来解码所收到的帧。我们尝试使用4种不同的摄像机，其中两个相机能够获得一个流畅的视频。但是，在其余两个中，我们观察到，每25-30帧一次，解码器一次冲洗4帧，从而导致框架下降。
- 为什么解码器会一次冲洗4帧？
- 我们可以做些什么来防止这种情况？
- 我们可以通过修改管道以某种方式维护恒定的FPS吗？
如有必要，我也可以共享解码器代码。提前致谢！
We are using the following gstreamer pipeline to parse rtsp stream:
gst-launch-1.0 rtspsrc port-range=5000-5100 location="rtsp://.." latency=300 is-live=true ! queue ! rtph264depay name=depayer! video/x-h264 , stream-format=byte-stream, alignment=au ! h264parse ! video/x-h264 , stream-format=byte-stream, alignment=au ! appsink name=mysink sync=true
Then we are decoding the recieved frames using Nvidia Video Codec SDK decoder. We tried using 4 different cameras, in two of them we were able to obtain a smooth video. However, in the remaining two we observed that once in every 25-30 frames, decoder flushes 4 frames at once, causing frame drops.
- Why would the decoder flushes 4 frames at once?
- Is there anything we can do to prevent that?
- Can we somehow maintain a constant fps by modifying the pipeline?
I can also share the decoder code if necessary. Thanks in advance!
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框架应带有时间戳。您需要将播放与这些同步。解码器可能会立即具有多个图片，具体取决于它们的编码方式。在这方面阅读有关B框架的信息。解码器不负责流畅的播放，这是该应用程序。
Frames should come with timestamps. You need to sync playback to these. A decoder may have multiple pictures at once depending on how they have been coded. Read about b-frames in this regard. A decoder is not responsible for smooth playback, thats up to the application.