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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →To shrink a prerecorded Hindi bhajan MP4, re-encode a copy with H.264 and FFmpeg’s quality-based CRF setting, then check the video and audio before replacing the original. There is no single best setting or predictable size reduction without knowing the source file and how much quality loss you will accept. If you mean a live encoder rather than a prerecorded file, use YouTube’s live bitrate and keyframe recommendations—not its upload bitrate table.
First decide whether you are compressing a file or setting up a live stream
These are different tasks. Compressing an existing MP4 means creating a smaller encoded file, usually by re-encoding it. Configuring a live YouTube stream means choosing the outgoing resolution, frame rate, codec, and bitrate in an encoder. A smaller upload file does not automatically make a live feed better, and upload bitrate recommendations should not be substituted for live-stream settings.
- For a prerecorded bhajan: follow the MP4 workflow below and compare the new file with the original.
- For a live encoder: follow YouTube’s live guidance for the exact resolution, frame rate, and codec you intend to send.
Reduce the size of a prerecorded bhajan MP4
1. Keep the original and inspect the source
Make a copy before encoding. Note the source resolution, frame rate, audio format, and duration; these affect the output and help you judge whether a result is an improvement. YouTube says, “Content should be encoded and uploaded in the same frame rate it was recorded.” Keep the source frame rate rather than changing it just to reduce file size. See YouTube’s recommended upload encoding settings.
2. Choose a quality target, not a magic number
With FFmpeg and libx264, CRF is a quality-based control: the encoder trades file size against visual quality. The suitable value depends on the source and your tolerance for loss; no Hindi-bhajan-specific winning CRF or guaranteed output size is established. A slower preset can take more time to encode and may improve compression efficiency. Adjust one setting at a time so you can tell what changed.
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For an initial example, this command creates an H.264 MP4 with AAC audio and places MP4 playback metadata at the front:
ffmpeg -i input.mp4 -c:v libx264 -preset slow -crf 23 -c:a aac -b:a 192k -movflags +faststart output.mp4
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Here, CRF 23 and audio at 192 kb/s are illustrative values, not a tested or guaranteed recommendation for a Hindi bhajan. If the original audio is already suitable, avoid needless audio re-encoding where your workflow permits it; re-encoding can affect vocals and instruments. FFmpeg documents libx264 CRF, presets, and -movflags +faststart in its documentation.
3. Test a representative section and inspect the result
- Encode a short section that represents the recording, including vocals and instruments where possible.
- Watch it at the size people are likely to view it, and listen carefully for changes to vocals, percussion, or other instruments.
- Compare the output file size with the original. If the result is too large or quality has fallen too far, adjust one setting and encode the sample again.
- When the sample is acceptable, encode the full file and retain the original as a fallback.
This sample-and-adjust workflow is practical guidance, not a test result for any particular bhajan file. The best trade-off cannot be known without the source and a quality target.
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4. Keep MP4 fast start in perspective
The +faststart option moves the MP4’s moov metadata to the beginning of the file, which can help playback begin sooner. It does not improve the compression ratio or, by itself, shrink the encoded video. YouTube also recommends placing the moov atom at the front for upload files; consult its upload encoding guidance.
Use upload recommendations only for an uploaded video
YouTube’s undated help guidance, accessed 2026-10-03, lists these SDR video bitrate references at standard frame rates. They are upload recommendations, not measured optima for Hindi bhajan recordings.
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| Upload resolution | YouTube SDR video bitrate reference |
|---|---|
| 1080p | 8 Mbps |
| 720p | 5 Mbps |
| 480p | 2.5 Mbps |
YouTube’s upload guidance recommends MP4 and H.264 video, with audio options including AAC-LC. These values help frame an upload encode, but do not promise a particular final size or quality. The result also depends on the source, duration, frame rate, and encoding choices.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Configure a live YouTube encoder separately
If by “stream” you mean sending a live feed from an encoder, do not compress the MP4 and assume that sets the live feed. Choose the row in YouTube’s live encoder settings that matches your intended resolution, frame rate, and codec, then use its bitrate recommendation. The live values differ by codec and frame rate, so the upload table above is not a substitute.
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- Use the live-table bitrate for the actual resolution, frame rate, and codec combination.
- YouTube’s RTMP/RTMPS encoder recommendations specify CBR and a two-second keyframe interval.
- Check that your available upload connection can sustain the selected outgoing feed.
Or let it run in the cloud
If your goal is to keep a prerecorded bhajan live on YouTube without leaving a computer running, StreamNeo plays uploaded videos from the cloud. Upload your recording or build a playlist, add your YouTube stream key once, and go live. Your computer and home connection do not have to stay on. StreamNeo is for YouTube and plays uploaded videos; it does not stream from a camera.
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