[MEncoder-users] Encoded file doesn't sync with iPhone [SOLVED]

[Grozdan]

On Wed, Mar 17, 2010 at 1:22 AM, Laine Lee <llee040 at sbcglobal.net> wrote:
>
>
>
> On 3/16/10 12:02 PM, "Grozdan" <neutrino8 at gmail.com> wrote:
>
>> On Tue, Mar 16, 2010 at 5:57 PM, Kasper Bonne <kbonne at gmail.com> wrote:
>>> 2010/3/16 Jörgen Isaksson <jogga at me.com>:
>>>> I'm not sure of anything regarding this. I'm just saying that it's finally
>>>> syncing with the iPhone. I will have to dig deeper into all those options
>>>> now that I have something to work with. It seems like the last two
>>>> parameters did the trick?
>>>>
>>>> But thx for all the help and friendly replies from all list members.
>>>
>>> Thanks for sharing this information. I have been wanting to encode for
>>> the iPhone myself.
>>>
>>> If you fine tune the options, e.g., to yield a better quality, please
>>> don't hesitate to post it. I for one would find it very useful.
>>
>> You want better quality? How about this? :)
>>
>> frameref=1:nomixed_refs:bframes=0:b_adapt=0:b_pyramid=none:noweight_b:weightp=
>> 0:direct_pred=none:aq_mode=1:me=umh:subq=8:mbtree:psy_rd=0.8,0.0:chroma_me:tre
>> llis=0:nocabac:deblock:no8x8dct:partitions=p8x8,i4x4:nofast_pskip:dct_decimate
>> :level_idc=30:threads=auto::vbv_maxrate=1500:vbv_bufsize=1000
>>
>
> There's a pair of adjacent colons in that option string (after
> "threads=auto"), is there a chance something was omitted?

No....

> Anyway, I removed
> one of them and encoded with those options. I have yesterday's build of x264
> and a new build of MEncoder (SVN-r30912-4.2.1), and although mplayer played
> the output, QuickTime playback stayed black for the entire duration, and
> iTunes wouldn't transfer the output to my iPod Touch, which has the same
> video specs as the recent iPhone, I think.
>
> I added "global_header" to the above, and then the output played correctly
> in QuickTime and was successfully transferred to the iPod Touch using
> iTunes.

How did you remux? The settings above come from my script and I know
people use them to encode for the ipod/iphone without problems. I
always use the -ipod option of mp4box when remuxing for these devices

>
> I think using the largest video dimensions and the highest bit rate that are
> compatible with your iPhone will probably be the simplest changes you can
> make that will have the greatest impact. But a lot depends on your source,
> and you aren't likely to be able to make fine adjustments unless you
> playback on a screen larger than that of the iPhone.
>
> I can encode iPod/iPhone compatible versions of most common movie files with
> great success using the filter and option combinations that have already
> been offered in this thread. One interesting exception is the source
> recordings I get from my Hauppauge HD-PVR. They're always interlaced 60 fps
> h.264. But they are also apparently telecined. Whatever method I use to
> transcode them, the output never looks quite right unless I perform some
> sort of pullup operation.
>
> So to make a long story short, I found that I could take the command line
> provided by Jorgen and add -fps 60000/1001, -ofps 24000/1001, and -noskip to
> the options, then add
> tfields=0,tinterlace=2,filmdint=io=30:24/fast=0,softskip to the front of the
> filter chain, then apply that conversion to the native format h.264 video
> that I'm able to export from my HD-PVR recording tool (EyeTV) to get the
> results I want, of which a top priority is not to encounter the
> disappointing stutters that occur 6 times a second whenever one converts 24
> fps to 30.
>
> Laine Lee
>
>
>
>
>
> _______________________________________________
> MEncoder-users mailing list
> MEncoder-users at mplayerhq.hu
> https://lists.mplayerhq.hu/mailman/listinfo/mencoder-users
>