Ticket #936 (new defect)

Opened 12 months ago

Audio plays heavily distorted on 8bit-mono source

Reported by: Leerlauf Owned by: cinelerra@…
Priority: normal Milestone:
Component: File Loading Version: 2.1
Severity: major Keywords: sound distortion PCM decoder
Cc:

Description

When playing an AVI file with an 8-bit PCM mono track, 11025 Hz, the sound in cinelerra's playback is heavily distorted (signed/unsigned problem?)
Other programs such as VLC play the file normally.
After recoding the file to 44100 Hz, 16 bit/sample Mono (using AviDemux), cinelerra plays the sound as expexted.

Looks like a bug in the Audio-decoder for PCM files, therefore logged in 'File Loading'.

Some small digital cameras generate this format. Such a camera is the source of the file.

Attachments

snippet_8bit_PCM.AVI Download (213.9 KB) - added by Leerlauf 12 months ago.
video snippet showing the distorted audio bug. Plays well with VLC, mediaplayer, AviDemux, etc.

Change History

Changed 12 months ago by Leerlauf

video snippet showing the distorted audio bug. Plays well with VLC, mediaplayer, AviDemux, etc.

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