[FFmpeg-devel] [PATCH 1/1] avcodec/dolby_e: Add error recovery when parse_mantissas run out of bits

[Nicolas Gaullier]

>De : Nicolas Gaullier <nicolas.gaullier at cji.paris> 
>Envoyé : lundi 11 mars 2024 15:01
>
>Mantissas are the last data in the channel subsegment and it appears it is sometimes missing a very few bits for the parsing to complete.
>This must not be confused with data corruption.
>In standard conditions with certified products, it has been observed that the occurence of this issue is pretty steady and about once every 2 hours. The truncation is at about 950 out of the 1024 values (923 is the minimum I have seen so far).
>The current code raises a severe 'Read past end' error and all data is lost resulting in 20ms(@25fps) of silence for the affected channel.
>This patch introduces a tolerance: if 800 out of the 1024 mantissas have been parsed, a simple warning is raised and the data is preserved.

Ping ?
still applies
last posted here: https://patchwork.ffmpeg.org/project/ffmpeg/list/?series=11090
Samples (source/before patch/after patch) here: https://0x0.st/oOvv.zip

Nicolas