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Add more codec options to local video publisher example #1002

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Add more codec options to local video publisher example #1002

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4363c8b
change -h265 to --codec flag on example
chenosaurus Apr 10, 2026
cd2b3ae
add vp8/9
chenosaurus Apr 10, 2026
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31 changes: 23 additions & 8 deletions examples/local_video/src/publisher.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use anyhow::Result;
use clap::Parser;
use clap::{Parser, ValueEnum};
use livekit::options::{TrackPublishOptions, VideoCodec, VideoEncoding};
use livekit::prelude::*;
use livekit::webrtc::video_frame::{I420Buffer, VideoFrame, VideoRotation};
Expand Down Expand Up @@ -72,9 +72,18 @@ struct Args {
#[arg(long)]
api_secret: Option<String>,

/// Use H.265/HEVC encoding if supported (falls back to H.264 on failure)
#[arg(long, default_value_t = false)]
h265: bool,
/// Video codec to use (falls back to h264 on failure)
#[arg(long, value_enum, default_value_t = CodecChoice::H264)]
codec: CodecChoice,
}

#[derive(Clone, Debug, ValueEnum)]
enum CodecChoice {
H264,
H265,
Vp8,
Vp9,
Av1,
}

fn list_cameras() -> Result<()> {
Expand Down Expand Up @@ -189,8 +198,14 @@ async fn run(args: Args, ctrl_c_received: Arc<AtomicBool>) -> Result<()> {
let track =
LocalVideoTrack::create_video_track("camera", RtcVideoSource::Native(rtc_source.clone()));

// Choose requested codec and attempt to publish; if H.265 fails, retry with H.264
let requested_codec = if args.h265 { VideoCodec::H265 } else { VideoCodec::H264 };
// Choose requested codec and attempt to publish; fall back to H.264 on failure
let requested_codec = match args.codec {
CodecChoice::H264 => VideoCodec::H264,
CodecChoice::H265 => VideoCodec::H265,
CodecChoice::Vp8 => VideoCodec::VP8,
CodecChoice::Vp9 => VideoCodec::VP9,
CodecChoice::Av1 => VideoCodec::AV1,
};
info!("Attempting publish with codec: {}", requested_codec.as_str());

let publish_opts = |codec: VideoCodec| {
Expand All @@ -213,8 +228,8 @@ async fn run(args: Args, ctrl_c_received: Arc<AtomicBool>) -> Result<()> {
.await;

if let Err(e) = publish_result {
if matches!(requested_codec, VideoCodec::H265) {
log::warn!("H.265 publish failed ({}). Falling back to H.264...", e);
if !matches!(requested_codec, VideoCodec::H264) {
log::warn!("{} publish failed ({}). Falling back to H.264...", requested_codec.as_str(), e);
room.local_participant()
.publish_track(LocalTrack::Video(track.clone()), publish_opts(VideoCodec::H264))
.await?;
Expand Down
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