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--- doc:appunti:hardware:raspberrypi_nas [2021/03/31 15:13] – [Home Mediacenter and NAS with the Raspberry Pi] niccolo
+++ doc:appunti:hardware:raspberrypi_nas [2021/04/02 13:47] (current) – [Home Mediacenter and NAS with the Raspberry Pi] niccolo
@@ Line 3: / Line 3: @@
 This is my recipe to build a **[[wp>Home_theater_PC|mediacenter]]** and **[[wp>Network-attached_storage|NAS]]** box using the **[[wp>Raspberry_Pi|Raspberry Pi]]**. This is the list of hardware components:
-  * **Raspberry Pi** 4 Model B with 4 Gb RAM.
+  * **Raspberry Pi 4** Model B with 4 Gb RAM.
   * 4 Tb **hard disk** Seagate IronWolf 3.5 inches.
   * **Suptronics.com X835** USB to SATA adapter, to connect the hard disk.
@@ Line 15: / Line 15: @@
 {{.:raspberrypi:forbidden-mpg4.png?90 |MPEG4 Warning}}
-**WARNING** :!: There is another potential problem with the **Raspberry Pi 4**: due the increased CPU power, the designers decided to drop the **H263** and **MPG4** codecs from the hardware. That codecs were enabled in-hardware into the older Raspberry Pi models and the license price were included into the hardware price. In older models you could also purchase additional licenses, e.g. for **MPEG2** and **VC-1**; this is no longer an option on the Raspberry Pi 4. My experience is not satisfying with sofware decoding of MPEG4 streams (e.g. some produced by the XviD library): whereas the LibreELEC distribution is smooth enough, the RaspiOS one produces **unacceptable jerky video playback**.
+**WARNING** :!: There is another potential problem with the **Raspberry Pi 4**: due the increased CPU power, the designers decided to drop the **H263** and **MPG4** codecs from the hardware. That codecs were enabled in-hardware into the older Raspberry Pi models and the license price was included into the hardware price. In older models you could also purchase additional licenses, e.g. for **MPEG2** and **VC-1**; this is no longer an option on the Raspberry Pi 4. I experience a **[[https://github.com/raspberrypi/linux/issues/4257|bug]]** with **Kodi** and **kernel 5.10**: software decoding of MPEG4 streams (e.g. the ones produced by the XviD library) were terribly jerky. I had to downgrade to **kernel 4.19** to solve the problem. Notice that the **LibreELEC 9.2** and **10.0 Beta** distributions play the same file smoothly.
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