Experimental Branch Update: SD Card Recovery System

[Jstudner]

This update introduces a new SD card failure recovery system and stream resilience features for both Movies and Shows pages.

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What's New

• SD Card Read Error Recovery

  The system now detects and handles common SD card read errors such as:

E (430180) sdmmc_cmd: sdmmc_read_sectors_dma: sdmmc_send_cmd returned 0x107
E (430180) diskio_sdmmc: sdmmc_read_blocks failed (0x107)

When these errors occur, the server attempts to recover the SD card interface automatically instead of crashing. Recovery usually completes in under a second.

• Video Stream Auto-Restart

If a video stalls due to a slow or interrupted read from the SD card, the frontend now automatically reloads the video from the current timestamp. If the browser's buffer runs out, a new HTTP Range request is triggered, and the stream is resumed without user input.

This system supports both Movies and Shows pages and is designed to be invisible to the user during normal playback.

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Why This Matters

In earlier versions, these SD errors could cause the system to enter a fault state and trigger a watchdog reset, resulting in a full reboot. This new version catches those errors early, attempts recovery, and keeps the device stable.

SD Card Compatibility

This feature is particularly useful for older or low-quality SD cards, including no-brand or generic cards. (Like the ones I use)

For best results, it is recommended to use Class 10 or UHS-1 rated SD cards, which offer significantly faster and more reliable read speeds.

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Summary

• Recovery from SD read failures without crashing
• Streams resume automatically if a read stalls
• Reduces full system crashes caused by SD issues
• Improves overall playback stability

This is a major reliability improvement, especially for systems running on marginal or aging hardware.