H264 codec configuration in MediaTX can lead to silent failures

When configuring the MediaTX server for RTSP streaming, specifying the H264 codec without accompanying audio parameters (sampleRate and channelCount) can cause the server to fail silently, resulting in no video output. This is particularly relevant when combined with audio codecs like MPEG4Audio, G711, or LPCM, which require additional settings for successful operation.

To reproduce the issue, follow these steps: 1. Modify the `webcam-rtsp-test/mediamtx/mediamtx.yml` file to set the codec to H264. ```yaml codec: H264 ``` 2. Omit the audio parameters (sampleRate, channelCount) or incorrectly use them with compatible audio codecs. 3. Start the MediaTX server and attempt to stream. 4. Observe that while no explicit error is raised, the streamed output will be empty or non-functional.

To avoid this issue, ensure that when specifying H264 as your video codec, you also include the correct audio parameters: ```yaml sampleRate: 48000 channelCount: 2 ``` By refining your audio codec settings based on the codec chosen, you can achieve a functional streaming setup without the confusion of silent errors.