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

[Jörgen Isaksson]

On 15 mar 2010, at 16.43, Grozdan wrote:

> 2010/3/15 Jörgen Isaksson <jogga at me.com>
>> 
>> On 15 mar 2010, at 15.34, Christian Ebert wrote:
>> 
>>> * Jörgen Isaksson on Monday, March 15, 2010 at 15:16:33 +0100
>>>> On 15 mar 2010, at 12.46, Grozdan wrote:
>>>>> Encode as usual to an AVI with mencoder (make sure you add -vf harddup to
>>>                         ^^^
>>>>> your video filters chain)
>>>>> 
>>>>> After done, use MP4Box to dump the video and audio, then mux it together
>>>>> 
>>>>> MP4Box -aviraw video file.avi
>>>>> MP4Box -aviraw audio file.avi
>>>>> 
>>>>> if your audio is AAC, you have to rename the dumped MP4Box audio file to
>>>>> have the .aac extension or else, MP4Box won't accept files with the .raw
>>>>> extension. Then, mux it together like this
>>>>> 
>>>>> MP4Box -fps <fps-of-video> -add video.h264 -add audio.aac -ipod -mpeg4 -new
>>>>> output.mp4
>>>> 
>>>> I'm sorry, but I still can't get it to work???
>>> 
>>> You're still using the lavf muxer (-of lavf) which is broken. As
>>> Grozdan stated, you have to go the avi route.
>>> 
>>>> It just doesn't sync with the iPhone.
>>>> 
>>>> This is what I tried. First I encode the video to mp4 like this. The avi suggestion didn't work.
>>>> 
>>>> mencoder movie.mov -o output.mp4 -vf scale=480:-10,harddup -lavfopts format=mp4 -faacopts mpeg=4:object=2:raw:br=128 -oac faac -ovc x264 -sws 9 -x264encopts nocabac:level_idc=30:bframes=0:global_header:threads=auto:subq=5:frameref=6:partitions=all:trellis=1:chroma_me:me=umh:bitrate=500 -of lavf
>>> 
>>> mencoder -of avi -o output.avi ...
>>> 
>>> And then the MP4Box commands Grozdan gave you.
>> 
>> I'm really sorry... but using the Grozdan method still doesn't work for me. I'm not using -of lavf anymore. Encoding to an avi container like this.
>> 
>> mencoder input.mov -of avi -o output.avi -vf scale=480:-10,harddup -faacopts mpeg=4:object=2:raw:br=128 -oac faac -ovc x264 -sws 9 -x264encopts nocabac:level_idc=30:bframes=0:global_header:threads=auto:subq=5:frameref=6:partitions=all:trellis=1:chroma_me:me=umh:bitrate=500
>> 
>> MP4Box -aviraw video output.avi
>> MP4Box -aviraw audio output.avi
>> 
>> renaming output_audio.raw to output_audio.aac as Grozdan mentioned and muxing.
>> 
>> MP4Box -fps 25 -add output_video.h264 -add output_audio.aac -ipod -mpeg4 -new output.mp4
>> 
>> AVC-H264 import - frame size 480 x 272 at 25.000 FPSImport results: 272 samples - Slices: 10 I 262 P 0 B - 0 SEI - 6 IDR
>> AAC import - sample rate 44100 - MPEG-4 audio - 2 channels
>> Setting up iTunes/iPod file...
>> Forcing AVC/H264 SAR to 1:1...
>> Saving output.mp4: 0.500 secs Interleaving
>> 
>> I end up with a file with an empty video and audio track???
>> 
>> Do you have a workflow for this that actually works? It feels like I'm so close...
> 
> try h264enc, it has presets for iphone/ipod and muxes to mp4 as well.
> I don't buy shit from Apple, but I know people have successfully used
> to encode for their devices
> 
> http://h264enc.sourceforge.net/
> 
> Make sure your gpac/mp4box is up to date

It seems like the x264 encoding settings I was using didn't produce a baseline h264 track as I expected. I used trial and error and found a solution that actually syncs with my iPhone without the need to use mp4box for muxing. Nice!

This is what I'm using at the moment if someone is interested.

mencoder input.mov -o output.m4v \
-vf scale=480:-10,harddup \
-of lavf -lavfopts format=ipod \
-alang en \
-oac faac -faacopts br=128:mpeg=4:object=2:raw \
-ovc x264 -x264encopts bitrate=800:nocabac:level_idc=30:bframes=0:global_header:threads=auto:subq=5:frameref=6:partitions=all:trellis=1:chroma_me:me=umh:weightp=0:8x8dct=0

Best regards / Jorgen