[MEncoder-users] how to test encoded file ?

[Grozdan]

On Tue, Jul 6, 2010 at 8:54 PM, Bernd Butscheidt <bbutscheidt at yahoo.de> wrote:
> ----- Ursprüngliche Mail ----
>
> Grozdan <neutrino8 at gmail.com> wrote:
> Re: [MEncoder-users] how to test encoded file ?
>
>> > So mencoder/mplayer is unmaintained?
>>>
>>> No, mencoder is, not mplayer
>>
>> can someone to explain why we have so sad situation with mencoder ?
>
> No one really cares about it. Most devs focus on ffmpeg nowadays,
> though I find ffmpeg worse than mencoder
>
>
> ========================
>
> I wasn't aware of this.
>
> Up to now, I use broken
>
> -of lavf -lavfopts format=matroska
>
> for x264 encoding. The first test I do with smplayer: it doesn't play at proper frame rate (I encode to 24fps, smplayer shows 23.976 fps) but you get a good idea about the quality of the result. Remuxing the result of mencoder with mkvmerge makes up to now everybody happy: my stand alone Blue Ray Player or vlc, xine etc. ...

You sure it was exactly 24fps? Because such files (real film) are very
rare. Most of the time, when people talk about 24p, they mean content
with 23.976fps which is called "NTSC Film"

>
> With enocding to the default avi format using x264 and ac3-sound I had no luck. Even remuxing with mkvmerge gave me broken files (no sound and/or distorted picture). When the result is bigger than 4 GB than even smplayer needs to index the file to start playing at all. So good and sad news in one sentence: the broken lavf muxer gives the most reliable results to me.

lavf is only "working" with no b-frames. The moment you need b-frames
and starting using them, your file will be messed up if you use lavf
as muxer in mencoder. And since no one really cares for mencoder, I
suspect they will remain so for a very long time, if not ever.

my h264enc script (which you can download) uses avi as output and then
the various container muxers (mkvmerge, mp4box, ogmmerge, tsmuxer) for
remuxing. I have yet to see it producing "broken" files that won't
play or have distorted pictures, nor do I have received such reports
from my small group of users. Maybe there's something wrong with your
options, or you have a miscompiled build, or there's something else
going on?

>
> How will the future look like? Decoding with mplayer (to still have advantage of the filters offered and the possibility to rip subtitles) and piping the output to ffmpeg or other encoder?
>
> Kind regards
> Bernd
>
>
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