Hi I have problema using concatenate, I concatenate 2 mpg files with diferent resolution and when I put it on DVD It dosent work properly but on the PC all is Ok What Happen?
On 09/10/2015, Paul B Mahol <[email protected]> wrote: > On 10/6/15, Ryan Mirman <[email protected]> wrote: >> When I try to concat these 3 video files, it outputs a video with a too >> short of a duration and way too high of a bitrate. >> >> I am not sure if I am using ffmpeg the wrong way, if the audio is >> corrupted, or if it is a bug with ffmpeg? >> >> >> Here are the files, >> https://mega.nz/#F!xsoGWIBA!1EQskrUQ1_09LenwhPawgw >> >> These webm files have been recorded from webrtc through firefox on >> archlinux. >> The files used in each command are found in the linked mega folder. >> >> >> This command is enough to demonstrate the problem I am having, >> ffmpeg -f concat -i list.txt -c copy output.webm >> this gives an output file that is too short but has a very high bitrate. >> (The log for this is concat_copy.log) >> >> VLC may not play these videos at all, but firefox does for the most part >> and I have been using GNOME mplayer. >> In this, you should see a video that says it is 1 second long but plays >> some audio after that but the video stops. >> >> >> Also note that running >> ffmpeg -f concat -i list.txt output.webm >> outputs a file with the same duration as before, but a much lower bitrate. >> This should be similar to the last output video. >> (The log for this is concat_transcode.log) >> >> >> If you first convert the videos, >> ffmpeg -i 0.webm 0_fixed.webm >> ... >> (the output for these are 0_fixed.log, ...) >> and this above command with the corrected list file, >> ffmpeg -f concat -i list.txt -c copy output.webm >> it outputs a file with the correct duration of 3 seconds and a normal >> bitrate. >> This should play like a normal video. (sorry for the crackly mic) >> (The log for this is concat_fixed_copy.log) >> >> >> It is possible that the audio was corrupted from recording, but even so >> this behavior is not expected. >> This does not happen from chrome on windows. > > The video & audio you concatenate must have same properties: widht,height, > pixel format, etc .. channels bitrate and so on. > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > -- SCC _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
