[issue2423] MP4 container with variable frame rate source, very very slow encoding

Deyan added the comment: Hello, Happy New year to all :) I just wanted to let you know that using -vsync 0 on variable frame rate sources might solve the problem with them, but also introduces problems with other input movies. I started getting errors like this one: [mp4 @ 0x7f3ef30] st:0 err

[issue2423] MP4 container with variable frame rate source, very very slow encoding

Deyan added the comment: Hi, I have made some further testing and it looks like that OGG format is also suffering from this issue. Regards, Deyan FFmpeg issue tracker _

[issue2423] MP4 container with variable frame rate source, very very slow encoding

Deyan added the comment: Hello, > I meant you to test without "-vcodec" and I would recommend to use "-t 1 > -qscale > 20" instead of "-b". If I try with the follwing command line, I get an error: [r...@spare Videos]# ffmpeg -y -i VTS_01_4-VFR.mp4 -an -t 1 -qscale 20 /tmp/out.mp4 FFmpeg v

[issue2423] MP4 container with variable frame rate source, very very slow encoding

Deyan added the comment: Hello, > Use -vsync 0 in the mean time. This looks like working, but have one concern. If I use it as hardcoded parameter, is it possible this option to break other movies which were encoded just fine without it? I am asking this, because I was unable to find a way to

[issue2423] MP4 container with variable frame rate source, very very slow encoding

Carl Eugen Hoyos added the comment: I meant you to test without "-vcodec" and I would recommend to use "-t 1 -qscale 20" instead of "-b". FFmpeg issue tracker ___

[issue2423] MP4 container with variable frame rate source, very very slow encoding

Baptiste Coudurier added the comment: On 12/14/2010 08:53 AM, Deyan wrote: > > Deyan added the comment: > > Hello, > > I am not sure what exactly do you mean by ASP, but I tested with libxvid and > the > result is the same, very slow encoding if using MP4 format and everything is > fine with M

[issue2423] MP4 container with variable frame rate source, very very slow encoding

Deyan added the comment: Hello, I am not sure what exactly do you mean by ASP, but I tested with libxvid and the result is the same, very slow encoding if using MP4 format and everything is fine with MKV [r...@spare Videos]# ffmpeg -y -i VTS_01_4-VFR.mp4 -b 512k -an -vcodec libxvid /tmp/out.m

[issue2423] MP4 container with variable frame rate source, very very slow encoding

Carl Eugen Hoyos added the comment: Is libx264 required to reproduce your problem, or are so many frames also duplicated for MPEG 4 ASP? -- status: new -> open substatus: new -> needs_more_info FFmpeg issue tracker

[issue2423] MP4 container with variable frame rate source, very very slow encoding

New submission from Deyan : Hello, ffmpeg is acting very strange when I pass to it video libx264/MP4 with variable frame rate and then try to recode to libx264/MP4. The Video I am testing with, is encoded from TS to libx264/MP4 with encoder "HandBrake svn3703 2010121001", which by default encod