On 10/16/2020 12:41 PM, Ivan Gorin wrote: > [avi @ 0x558097763700] New audio stream 0:1 at pos:18113032 and DTS:0s > [avi @ 0x558097763700] New audio stream 0:2 at pos:18113032 and DTS:0s Have you tried using -analyzedurarion and -probesize with relative large values to find the streams? See the doc for exact behavior and values. z!