Enum StreamError 

pub enum StreamError {
    Encode(EncodeError),
    Io(Error),
    InvalidConfig {
        reason: String,
    },
    UnsupportedCodec {
        codec: String,
        reason: String,
    },
    FanoutFailure {
        failed: usize,
        total: usize,
        messages: Vec<String>,
    },
    ProtocolUnavailable {
        reason: String,
    },
    Ffmpeg {
        code: i32,
        message: String,
    },
}

Errors that can occur during streaming output operations.

This enum covers all error conditions that may arise when configuring, building, or writing HLS / DASH output.

Error Categories

• Encoding errors: Encode — wraps errors from ff-encode
• I/O errors: Io — file system errors during segment writing
• Configuration errors: InvalidConfig — missing or invalid builder options, or not-yet-implemented stubs

Variants

Encode(EncodeError)

An encoding operation in the underlying ff-encode crate failed.

This error propagates from ff_encode::EncodeError when the encoder cannot open a codec or write frames.

Io(Error)

An I/O operation failed during segment or playlist writing.

Typical causes include missing output directories, permission errors, or a full disk.

InvalidConfig

A configuration value is missing or invalid, or the feature is not yet implemented.

This variant is also used as a stub return value for write() / hls() / dash() methods that await FFmpeg muxing integration.

Fields

reason: String

Human-readable description of the configuration problem.

UnsupportedCodec

The requested codec is not supported by the output format.

For example, RTMP/FLV requires H.264 video and AAC audio; requesting any other codec returns this error from build().

Fields

codec: String

Name of the codec that was rejected.

reason: String

Human-readable explanation of the constraint.

FanoutFailure

One or more FanoutOutput targets failed to receive a frame or to finish cleanly.

All targets still receive every frame even when some fail; errors are collected and returned together after the full fan-out pass.

Fields

failed: usize

Number of targets that returned an error.

total: usize

Total number of targets in the fanout.

messages: Vec<String>

Per-target error messages in "target[i]: <error>" format.

ProtocolUnavailable

The requested network protocol is not compiled into the linked FFmpeg build.

Returned by build() when a feature-gated output (e.g. SrtOutput) is opened but the underlying FFmpeg library was built without the required protocol support (e.g. libsrt).

Fields

reason: String

Human-readable description of why the protocol is unavailable.

Ffmpeg

An FFmpeg runtime error occurred during muxing or transcoding.

code is the raw FFmpeg negative error value returned by the failing function (e.g. AVERROR(EINVAL)). message is the human-readable string produced by av_strerror. Exposing the numeric code lets engineers cross-reference FFmpeg documentation and source directly.

Fields

code: i32

Raw FFmpeg error code (negative integer).

message: String

Human-readable description of the FFmpeg error.

Trait Implementations

impl Debug for StreamError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for StreamError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for StreamError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<EncodeError> for StreamError

fn from(source: EncodeError) -> Self

Converts to this type from the input type.

impl From<Error> for StreamError

fn from(source: Error) -> Self

Converts to this type from the input type.