Use HandBrake to re-encode each HEVC video as H.264 in an MP4 container, check the results, and then add the converted files to your OBS playlist or upload them to YouTube and organize them into a YouTube playlist. Renaming a file or remuxing it changes neither its video codec nor its compatibility: HEVC must be decoded and encoded again to become H.264.
Why convert HEVC to H.264?
HEVC (also called H.265) and H.264 are different video codecs. YouTube’s standard upload recommendations call for an MP4 container with H.264 video, so converting a HEVC recording can improve compatibility with a conventional upload workflow. YouTube also advises encoding and uploading at the frame rate at which the video was recorded. YouTube recommended upload encoding settings
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Changing a filename extension from .mkv or .mp4 to another extension does not convert the video. Nor does remuxing: that changes the container while copying the encoded video stream. OBS notes that MKV can be remuxed into a more compatible container, but a remuxed HEVC stream is still HEVC. OBS Audio/Video Formats Guide
Convert a video with HandBrake
1. Protect the originals and prepare the batch
- Keep an untouched copy of each HEVC source. Create a separate output folder so converted files cannot overwrite recordings.
- Use filenames that preserve episode order or playlist position, such as 001-intro, 002-lesson, and 003-outro. Make every output filename unique.
- For a batch, gather the intended recordings and check that they have the expected audio tracks, languages, subtitles, dimensions, and frame rates. Do a representative file first before processing the whole playlist.
2. Open a source and choose a Creator preset
- Install HandBrake from the official HandBrake project site, then open a source video. Folder selection and batch behavior can differ by platform and app version; if selecting a folder does not present the files as expected, add the videos as separate sources.
- Choose a Creator preset at the matching resolution and frame-rate class. HandBrake’s current official preset documentation lists Creator 720p60, 1080p60, 1440p60, and 2160p60. Creator presets target video-hosting uploads and use MP4, H.264, and AAC stereo. HandBrake official presets
- If your source is not 60 fps, do not choose a 60 fps preset simply because it is available. Match the source’s resolution and frame-rate class as closely as the available presets permit, then verify the settings yourself.
3. Verify video, audio, and subtitle settings
- Video: Confirm the encoder is H.264. Retain the source frame rate and dimensions where possible. Check that cropping, scaling, and filters have not changed the picture unintentionally. YouTube’s upload guidance recommends the recorded frame rate rather than an unnecessary conversion.
- Quality: A Creator preset is a practical starting point, not a guarantee that every source or destination needs identical settings. Inspect a test encode at full-screen size and make sure detail and motion remain acceptable.
- Audio: Confirm the intended language and track are selected and that the output has sound. HandBrake can encode audio or pass through supported source formats; for broad MP4 compatibility, AAC is a straightforward choice. YouTube lists AAC-LC, Opus, or Eclipsa Audio among supported upload audio options. HandBrake audio codecs
- Subtitles: Check whether the source contains subtitles and whether the intended tracks should be included. Do not assume every subtitle track will be retained automatically.
4. Name the output and queue the job
- Set the destination folder and a unique output name for the source.
- Add the job to HandBrake’s queue. For a playlist batch, add each source with its own destination name, review the queue to catch accidental duplicates or overwrites, and start the queue when it is ready. HandBrake documents the queue workflow for multiple jobs. Using the HandBrake queue
- After one representative file finishes, play it and verify duration, picture, aspect ratio, resolution, frame rate, audio, and subtitles. If the result is right, use the same settings consistently for the remaining files.
Batch conversion from the command line
HandBrakeCLI can suit repeatable batch work, and HandBrake documents an x264 encoder and command-line output options. There is no single safe command for every recording: the right arguments depend on the installed HandBrakeCLI version, source tracks, color properties, and output paths. Consult the CLI reference for your installed version, test one file, and inspect both the log and output before automating the batch. HandBrake documentation
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Do not use video stream copy when the goal is H.264. Copying the video stream avoids encoding and therefore leaves the video in HEVC. For a batch script, generate a distinct output path for every input and stop if a destination already exists; otherwise a naming mistake can overwrite a previous conversion.
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Expect a new encode, not a lossless label change
Re-encoding takes time and can reduce image quality. HEVC is more bitrate- and file-size-efficient than H.264 according to OBS’s format guidance, so an H.264 version may be larger at comparable visual quality. Software x264 encoding may take longer; a hardware H.264 encoder can shift work away from the CPU, but availability and output characteristics vary by hardware and driver. OBS hardware encoding
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Handle HDR and 10-bit sources deliberately
Do not blindly run HDR or 10-bit footage through settings intended for ordinary SDR material. Color handling can affect whether the result looks washed out, clipped, or otherwise different from the source. YouTube’s live-stream guidance discusses H.265 for HDR streaming, but live ingest is a different workflow from converting prerecorded uploads; it is not a universal HDR-to-H.264 recipe. YouTube live encoder settings, bitrates, and resolutions
If a source is HDR or 10-bit, test a short section and verify the result on a display that can reveal the relevant color or brightness changes before converting the full set. The documentation cited here does not establish one conversion recipe that is suitable for every HDR source.
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Put the converted files in the right playlist
There are two different playlist workflows. For an OBS playlist, point OBS at the converted local files and preserve the desired playback order in their names or playlist configuration. For a YouTube playlist, upload the converted files, wait for YouTube to process them, and then create or populate the playlist in YouTube Studio. Converting a file does not itself upload it or create a playlist.
If the recordings include copyrighted music, performances, or other material you do not own or have permission to use, changing the codec does not change the rights situation. Check permissions and YouTube’s applicable copyright policies before streaming or publishing. A conversion also does not make reused content original for purposes of YouTube monetization review.
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Troubleshooting conversion problems
- The converted file is still identified as HEVC: Check the Video encoder setting and ensure you encoded rather than remuxed or copied the stream.
- The image is cropped, resized, or has the wrong frame rate: Reopen the job settings and inspect dimensions, crop, filters, and frame rate. Restore the source values unless you intentionally need a change.
- The output has no sound or the wrong language: Inspect the audio track selection and confirm that the chosen codec or passthrough mode is supported for that source and output.
- Subtitles are missing: Revisit the subtitle selection and determine whether the track should be included in the output or handled separately.
- One batch item overwrote another: Stop the queue, restore from the untouched originals if needed, and assign unique output names before resuming.
- The output looks wrong despite correct codec settings: Compare it with the source and check for unintended filters, scaling, frame-rate conversion, or HDR-to-SDR handling. Do not process the remaining HDR/10-bit batch until a test file looks right.
- The H.264 file is larger or takes longer to make: That can be expected when converting from the more efficient HEVC codec. Retain the originals and use a quality setting that meets your viewing needs rather than assuming a smaller file is guaranteed.
Or let it run in the cloud
If the goal is keeping uploaded recordings live on YouTube around the clock after preparing them, StreamNeo is an alternative to leaving OBS running on a computer. Upload your recording or build a playlist, add your YouTube stream key once, and go live; StreamNeo loops the uploaded video from the cloud. It does not go live from a camera, and it streams to YouTube only. See StreamNeo.
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