a3-ntb% file ~/Plocha/*.avi
/home/martin/Plocha/2007-11-03_E105_2_Milan_Broz--LVM2_-_Logical_Volume_Management_pod_Linuxem.avi: RIFF (little-endian) data, AVI, 744 x 558, 25.00 fps, video: XviD, audio: MPEG-1 Layer 3 (stereo, 44100 Hz)
/home/martin/Plocha/2007-11-03_E105_5_Marek_Cervenka--Asterisk_aneb_jak_nacpat_tucnaka_do_ustredny.avi: RIFF (little-endian) data, AVI, 744 x 558, 25.00 fps, video: XviD, audio: MPEG-1 Layer 3 (stereo, 44100 Hz)
/home/martin/Plocha/2007-11-04_E105_2_Frantisek_Hrbata--RedirFS.avi: RIFF (little-endian) data, AVI, 744 x 558, 25.00 fps, video: XviD, audio: MPEG-1 Layer 3 (stereo, 44100 Hz)
/home/martin/Plocha/2007-11-04_E105_3_Jaroslav_Krejci--Administrace_Linuxu_pomoci_Webminu.avi: RIFF (little-endian) data, AVI, 744 x 558, 25.00 fps, video: XviD, audio: MPEG-1 Layer 3 (stereo, 44100 Hz)
/home/martin/Plocha/2007-11-04_E105_4_Jaroslav_Krejci--Filtrovani_webu_snadno_a_rychle.avi: RIFF (little-endian) data, AVI, 744 x 558, 25.00 fps, video: XviD, audio: MPEG-1 Layer 3 (stereo, 44100 Hz)
/home/martin/Plocha/2007-11-04_E112_3_Ladislav_Hagara--Jak_na_GnuPG_a_OpenPGP_v_roce_2007.avi: RIFF (little-endian) data, AVI, 768 x 576, 25.00 fps, video: XviD, audio: MPEG-1 Layer 3 (stereo, 44100 Hz)
/home/martin/Plocha/2007-11-04_E112_4_Michal_Svamberg--Xen_-_virtualizace_na_Zapadoceske_univerzite.avi: RIFF (little-endian) data, AVI, 768 x 576, 25.00 fps, video: XviD, audio: MPEG-1 Layer 3 (stereo, 44100 Hz)
//edit:
a koukám chcete i délku -
a3-ntb% ffmpeg -i ~/Plocha/2007-11-03_E105_2_Milan_Broz--LVM2_-_Logical_Volume_Management_pod_Linuxem.avi 2>&1 | grep Duration
a kodek
a3-ntb% ffmpeg -i ~/Plocha/2007-11-03_E105_2_Milan_Broz--LVM2_-_Logical_Volume_Management_pod_Linuxem.avi 2>&1 | grep Video
Stream #0.0: Video: mpeg4, yuv420p, 744x558, 25.00 fps(r)
Takže jen to nějak "zhromadnit"
třeba nějak takhle
find ~/Plocha -type f -name \*.avi -exec ffmpeg -i '{}' \; 2>&1 | grep -B2 Video
--
Input #0, avi, from '/home/martin/Plocha/tridit/2007-11-04_E105_2_Frantisek_Hrbata--RedirFS.avi':
Duration: 00:55:43.1, start: 0.000000, bitrate: 690 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 744x558, 25.00 fps(r)
--
Input #0, avi, from '/home/martin/Plocha/tridit/2007-11-04_E112_3_Ladislav_Hagara--Jak_na_GnuPG_a_OpenPGP_v_roce_2007.avi':
Duration: 00:54:56.5, start: 0.000000, bitrate: 882 kb/s
Stream #0.0: Video: mpeg4, yuv420p, 768x576, 25.00 fps(r)
--
...