Nicolas Maufrais wrote: > Hello, > > Could you put somewhere on the internet the mpeg file brent.mpg, or > brent.flv? That way we could have a look at it. > > Nicolas. > >
Thx for your quick response; for starters, I have found my "mistake": the flv video contains mp3 audio (single track 22050 Hz). When encoding to brent.mpg, audio was encoded as "mp2 mono" and mis-recognized in cinelerra as having two tracks. When I gave the additional option -acodec mp3 to ffmpeg, I have created a brent2.mpg file which is now correctly recognized by cinelerra as having a single audio track; playback now seems to work as normal. When I go back to work in January, I might upload the files (asymmetric broadband at home....), but the only difference in ffmpeg encoding I used is the -acodec mp3 switch. Interestingly though, ffmpeg -i on both files still reads Input #0, mpeg, from 'brent.mpg': ------------------> without -acodec mp3 switch Duration: 00:03:53.6, start: 0.500000, bitrate: 570 kb/s Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 320x240, 104857 kb/s, 25.00 fps(r) Stream #0.1[0x1c0]: Audio: mp2, 22050 Hz, mono, 56 kb/s Input #0, mpeg, from 'brent2.mpg' ------------------> with -acodec mp3 switch: Duration: 00:03:53.7, start: 0.500000, bitrate: 570 kb/s Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 320x240, 104857 kb/s, 25.00 fps(r) Stream #0.1[0x1c0]: Audio: mp2, 22050 Hz, mono, 56 kb/s Which looks the same to me, although the file sizes are different (by a little) and only the latter file works ok in cinelerra. Pieter > On Fri, Dec 29, 2006 at 06:23:28PM +0100, Pieter Thysebaert wrote: > >> Hello, >> >> I'm currently running Debian Etch and have installed cinelerra today from >> deb http://www.kiberpipa.org/~minmax/cinelerra/builds/sid/ ./ >> >> I also have deb http://www.debian-multimedia.org sid main in my >> sources.list (next to the etch entry for the same repository) >> >> The package cinelerra installs fine, but it chokes on MPEG video created >> with ffmpeg from youtube FLV files. >> >> Symptoms: pressing "play" in the viewer just skips the timeline to the >> end of the video, while just making a popping sound (using the ALSA >> sound driver) >> >> ffmpeg -i says about the file >> Input #0, mpeg, from 'brent.mpg': >> Duration: 00:03:53.6, start: 0.500000, bitrate: 570 kb/s >> Stream #0.0[0x1e0]: Video: mpeg1video, yuv420p, 320x240, 104857 kb/s, >> 25.00 fps(r) >> Stream #0.1[0x1c0]: Audio: mp2, 22050 Hz, mono, 56 kb/s >> >> Cinelerra media info lists 2 audio channels 22050 Hz (bits: unknown), >> 320x240 video 25fps >> >> This mpg file was created from a flv file using ffmpeg by issuing the >> command >> >> ffmpeg -i brent.flv -ab 56 -ar 22050 -b 500 -s 320x240 brent.mpg >> >> >> I have similar problems with other mpg files created from flv files; i'm >> using an ffmpeg version on my Debian sarge box: >> FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard >> configuration: --prefix=/usr --libdir=${prefix}/lib >> --incdir=${prefix}/include/ffmpeg --enable-shared --enable-mp3lame >> --enable-gpl --enable-faad --mandir=${prefix}/share/man --enable-vorbis >> --enable-pthreads --enable-faac --enable-xvid --enable-dts >> --enable-amr_nb --enable-amr_wb --enable-pp --enable-libogg --enable-a52 >> --enable-theora --enable-libgsm --enable-x264 --enable-a52bin >> libavutil version: 49.0.0 >> libavcodec version: 51.7.0 >> libavformat version: 50.3.0 >> built on Mar 18 2006 07:27:38, gcc: 3.3.5 (Debian 1:3.3.5-13) >> >> >> The same clips can be played in MainActor demo version 5.5.37 (without >> sound though). >> >> >> So I suppose my questions come down to: >> >> 1. Is a normal working cinelerra from kiberpipa supposed to support the >> mpg files I'm trying to feed it? >> 2. Has anyone tried to run cinelerra on debian etch with minimal "sid" >> packages? >> 3. Maybe some more packages from Debian multimedia on my system need to >> be upgraded from etch to sid? >> >> >> Thanx, >> >> Pieter >> >> _______________________________________________ >> Cinelerra mailing list >> [email protected] >> https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra >> >> > > _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
