Convert MP4 to SPX

Turn MP4 videos into Speex. Encoded as Speex speech coding in an Ogg file at 8, 16 or 32 kHz in mono or stereo, unless audio.sample_rate or audio.channels say otherwise, and lossy sound loses a little more than it already had.

Converted in an isolated sandbox on our serversDeleted after 24 hours

Drop MP4 files on the dialor turn it to pick what to do

MP4 and SPX

From

MP4 Video

The most compatible video container, usually H.264 video with AAC audio.

Extensions: .mp4, .m4v
MIME type: video/mp4
Kind: Video

To

Speex

Speex speech audio in an Ogg container, the predecessor of Opus.

Extensions: .spx
MIME type: audio/x-speex
Kind: Audio

Options for MP4 to SPX

audio.channels: Number of audio channels. 1 is mono, 2 is stereo.
audio.denoise: Reduce steady background noise.
audio.normalize: Normalize loudness to -16 LUFS as streaming services do.
audio.sample_rate: Audio sample rate in Hz.
speed: Playback speed multiplier. 2 plays twice as fast.
trim_end: Second at which the audio or video stops.
trim_start: Seconds to cut from the start of audio or video.