Update hardware demands in README.

[nageru] / README

diff --git a/README b/README
index b4a6291983c247637963079a14e1f3416c74035a..fc9e6acae6b3b78b481f5a4c475476f1ceef45b1 100644 (file)
--- a/README
+++ b/README
@@ -36,17 +36,10 @@ to 800 MHz after 30 seconds due to thermal constraints), Intel HD Graphics
 
 Nageru currently needs:
 
- - An Intel processor with Intel Quick Sync, or otherwise some hardware
-   H.264 encoder exposed through VA-API. Note that you can use VA-API over
-   DRM instead of X11, to use a non-Intel GPU for rendering but still use
-   Quick Sync (Nageru does this automatically for you if needed).
-
- - Two or more Blackmagic USB3 or PCI cards, either HDMI or SDI.
+ - Some sort of video capture cards; typically two or more Blackmagic USB3
+   or PCI cards, either HDMI or SDI (V4L2 is not generally supported).
    The PCI cards need Blackmagic's own drivers installed. The USB3 cards
-   are driven through the “bmusb” driver, using libusb-1.0. If you want
-   zerocopy USB, you need libusb 1.0.21 or newer, as well as a recent
-   kernel (4.6.0 or newer). Zerocopy USB helps not only for performance,
-   but also for stability. You need at least version 0.7.4.
+   are driven through the “bmusb” driver, using libusb-1.0.
 
  - Movit, my GPU-based video filter library (https://movit.sesse.net).
    You will need at least version 1.5.2.
@@ -58,7 +51,7 @@ Nageru currently needs:
  - x264 for encoding high-quality video suitable for streaming to end users.
 
  - FFmpeg for muxing, and for encoding audio. You will need at least
-   version 4.0.
+   version 5.0.
 
  - Working OpenGL; Movit works with almost any modern OpenGL implementation.
    Nageru has been tested with Intel on Mesa (you want 11.2 or newer, due
@@ -73,8 +66,6 @@ Nageru currently needs:
  - libjpeg, for encoding MJPEG streams when VA-API JPEG support is not
    available.
 
- - Zita-resampler, for adjusting audio to be in sync with video.
-
  - Protocol Buffers (protobuf), for storing various forms of settings and
    state.
 
@@ -93,12 +84,13 @@ Nageru currently needs:
  - Optional: libsrt, for SRT inputs (by default, Nageru will listen on
    port 9710, although you can change this port on the command line,
    turn it off with --srt-port -1, or turn it off live in the UI).
-   If you build with libsrt, make sure it is not linked to OpenSSL,
-   for license reasons.
+   SRT can also be used for output in addition to listening for HTTP
+   (see --srt-destination). If you build with libsrt, make sure it is not
+   linked to OpenSSL, for license reasons.
 
  - Optional: SVT-AV1, for encoding high-quality video suitable for streaming to
    end users (higher quality than using x264, but not nearly as mature).
-   You will need at least version 1.0.0.
+   You will need at least version 1.5.0.
 
 
 Futatabi also needs:
@@ -109,7 +101,7 @@ Futatabi also needs:
  - SQLite, for storing state.
 
 
-If on Debian bullsey or something similar, you can install everything you need
+If on Debian bullseye or something similar, you can install everything you need
 with:
 
   apt install qtbase5-dev libqt5opengl5-dev qt5-default \