AWS Elemental MediaLive can loop a file input indefinitely: configure the input’s sourceEndBehavior as LOOP. For a 1080p H.264 YouTube Live output, YouTube’s current bitrate recommendations are 14 Mbps at 30 fps or 17 Mbps at 60 fps, with CBR and a two-second keyframe interval. The important deployment caveat is protocol compatibility: the available AWS input documentation does not establish a direct MediaLive-to-YouTube RTMPS output path.
How do I loop a video in AWS Elemental MediaLive?
Create a MediaLive file input that pulls a supported file from Amazon S3 or an HTTP(S) server, then set the input’s sourceEndBehavior property to LOOP. AWS describes this option as allowing a file input to be streamed indefinitely. See the MediaLive Input API reference.
Supported file sources
| File type | Location | Important qualification |
|---|---|---|
| MP4 | Amazon S3 or HTTP(S) server | Supported as a file input. |
| Static TS or M2TS | Amazon S3 or HTTP(S) server | Growing TS files written while they are in use are not supported. |
These are input choices; they do not by themselves define the output encoder, output group, frame rate, or destination protocol. Refer to AWS’s supported input formats and protocols when selecting a source.
Set the loop behavior
For an input configuration represented in the API, the relevant setting is sourceEndBehavior: LOOP. The value applies to a file input. It is not a general setting for a live camera or other live source. AWS documents HD as 720 through 1080 vertical lines; that classification does not prescribe a complete 1080p source profile. See the MediaLive Input API reference.
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What 1080p settings should I use for YouTube Live?
Choose the bitrate according to the output frame rate. YouTube Help’s H.264 guidance, accessed in 2026, recommends the following for 1080p:
| Output | Recommended video bitrate |
|---|---|
| 1080p at 30 fps | 14 Mbps |
| 1080p at 60 fps | 17 Mbps |
YouTube recommends constant bitrate (CBR), a two-second keyframe interval, and says the interval should not exceed four seconds. Its recommended stereo audio settings are 128 Kbps and 44.1 kHz. These are YouTube recommendations, not a tested MediaLive channel profile. Confirm that your selected MediaLive input, output encoder settings, and channel configuration support the exact frame rate, codecs, and audio format you intend to use. See YouTube’s live encoder settings.
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Specify the parts the title does not determine
“1080p” alone is not enough to produce a complete channel recipe. Before configuring a channel, establish the source frame rate, video and audio codecs, input bitrate, whether audio is present, desired output frame rate, and output group and protocol. Match the 30 fps or 60 fps bitrate recommendation to the actual output rather than assuming the source’s resolution determines the frame rate.
Can MediaLive stream directly to YouTube using RTMPS?
YouTube recommends RTMPS, which is RTMP over TLS/SSL. However, AWS’s supported-input documentation says MediaLive RTMP Pull and RTMP Push inputs do not support RTMPS. That statement concerns MediaLive inputs; it does not establish which output protocols a particular MediaLive channel configuration supports. Therefore, it is not enough to claim a direct MediaLive-to-YouTube RTMPS connection. Check the output options for the channel configuration you plan to deploy and verify that the chosen YouTube ingest endpoint accepts that protocol. See AWS’s input protocol documentation and YouTube’s encoder guidance.
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Could HLS be used instead?
YouTube documents HLS ingest as an alternative, but it has specific requirements: MPEG-TS segments must be 1–4 seconds long, the playlist must be rolling with no more than five outstanding segments, and requests must use HTTPS POST or PUT. The available AWS documentation does not establish that a particular MediaLive output group directly satisfies all of these conditions. Treat HLS as a candidate to validate against the actual output configuration, not as a confirmed drop-in path. See YouTube’s live encoder settings.
Validate the full channel before relying on a continuous stream
- Confirm that the file is an eligible MP4, static TS, or M2TS source and that its S3 or HTTP(S) location is reachable by the configured input.
- Set the file input’s
sourceEndBehaviortoLOOPand check that the chosen input is actually a file input. - Choose 30 or 60 fps deliberately; for H.264 at 1080p, use YouTube’s corresponding 14 Mbps or 17 Mbps recommendation.
- Use CBR and a two-second keyframe interval, keeping the interval at or below four seconds. Configure audio only if it is part of the source and output.
- Confirm end-to-end output protocol compatibility with the intended YouTube ingest endpoint. Do not infer output support from MediaLive’s input protocol list.
- If evaluating HLS, verify segment duration, rolling playlist behavior, and HTTPS POST/PUT requirements against the actual output.
- Test the configured channel and stream before treating it as a production 24/7 workflow; the documented settings do not substitute for validation of a deployed channel.
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