ho fatto una copia delle info sul file che mi ha caricato formact ,
prima di convertirlo

General
Complete name : C:\Users\Daniela\Desktop\video gemelli\scarto video\01.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 2.10 MiB
Duration : 35s 370ms
Overall bit rate : 499 Kbps
Writing application : Lavf55.19.104


Video
ID : 0
Format : xvid
Codec ID : xvid
Duration : 35s 360ms
Bit rate : 356 Kbps
Width : 352 pixels
Height : 288 pixels
Display aspect ratio : 1.222
Frame rate : 25.000 fps
Standard : PAL
Bits/(Pixel*Frame) : 0.141
Stream size : 1.50 MiB (71%)


Audio
ID : 1
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Mode : Joint stereo
Mode extension : MS Stereo
Codec ID : 55
Codec ID/Hint : MP3
Duration : 35s 370ms
Bit rate mode : Constant
Bit rate : 128 Kbps
Channel(s) : 2 channels
Sampling rate : 44.1 KHz
Compression mode : Lossy
Stream size : 553 KiB (26%)
Alignment : Aligned on interleaves
Interleave, duration : 26 ms (0.65 video frame)
Interleave, preload duration : 26 ms
Writing library : LAME3.98.4