ZigzUtils/StreamSink
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  • v0.7.8 42cf8e2390

    v0.7.8 Stable

    builduser released this 2026-09-07 06:33:22 +02:00 | 5 commits to main since this release

    Fixes a source publishing a wrongly sized picture in coloured bands.

    The stream was being discarded while it was identified

    The cause was -fflags nobuffer, which both the camera output and the program
    view passed to ffmpeg.

    It sounds like the right thing for a live feed and is widely recommended. What
    it actually does is discard the packets consumed while identifying the streams
    rather than passing them on, and those include the codec configuration. The
    decoder is then working from a stream it cannot properly interpret, which is a
    picture of coloured bands when it is not simply nothing at all.

    Measured on ffmpeg n9.0.1 with a four second sample:

    frames decoded
    without the flag 60 of 60
    with -fflags nobuffer 30 of 60
    from a file rather than a pipe 0

    How much is lost depends on how the stream arrives, which is why the fault
    came and went and looked like a problem with one particular machine. The same
    flag also contributed to the "stream map matches no streams" failure fixed in
    0.7.7.

    -flags low_delay stays: it tells the decoder not to hold frames back and
    discards nothing.

    Seeing and avoiding format mismatches

    Devices are now asked what geometry they are set to, shown in the device list
    and by streamsink -devices. A loopback keeps the format it was given for as
    long as anything holds it open, so a source of a different size cannot change
    it while OBS is attached. When a camera starts against a device something else
    already holds, that is now said plainly rather than left to be inferred from a
    strange looking picture.

    A size can also be pinned per source, so the format never has to change at
    all. Useful when one device carries sources of differing sizes over time.
    Leave it on Match source otherwise.

    Downloads

    File For
    streamsink-0.7.8-linux-amd64.tar.gz Linux server, client and agent
    streamsink-0.7.8-windows-agent-amd64.zip Windows agent, headless
    streamsink-0.7.8-windows-server-amd64.zip Windows server and client, with the GTK4 runtime
    streamsink-0.7.8-windows-decoder-amd64.zip Windows decoder, for the program view
    SHA256SUMS checksums, used by the updater
    Downloads