On Sun, Apr 19, 2009 at 09:40:38AM -0400, DISAFAN wrote: > I'm experiencing a problem that I experienced when i tried to hack the > FFMPEG file myself to produce results. > > Setting the bitrate to 2000, and the resolution to 960x540...the > settings I use for HD recordings, the files produced seem to have > playback problems in the internal MythTV playback. > > Running ffmpeg -i just to see the specs of the file produces: > > Duration: 00:00:00.00, start: 0.000000, bitrate: -2147483 kb/s > Stream #0.0: Video: mpeg4, yuv420p, 960x544 [PAR 136:135 DAR 16:9], > 29.97 tbr, 29.97 tbn, 29.97 tbc > Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s
Note that -2147483648 in 32 bit integer arithemtics is 0x80000000h, e.g. the lowest negative number that can be represented. I think this is the equivalent to "N/A". Can you try ffmpeg -analyzeduration 25M -i Also which ffmpeg is this? I thought newer ffmpeg versions use "N/A" instead of -2147483 kb/s. > Now, this can be fixed by a command such as... > > mencoder file.avi -forceidx -oac copy -ovc copy -o fixedfile.avi > > Producing a result of... > > Duration: 00:19:49.68, start: 0.000000, bitrate: 2141 kb/s > Stream #0.0: Video: mpeg4, yuv420p, 960x544 [PAR 136:135 DAR 16:9], > 29.97 tbr, 29.97 tbn, 29.97 tbc > Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s > > But I thought someone might have figured out what has changed that > causes the file to come out this way in the first place. Any ideas > before I submit this to Trac? What created the first file? Can you try nuvexport --debug to see the commands that were used? -- Axel.Thimm at ATrpms.net
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