[FFmpeg-trac] #4012(undetermined:new): Transcoding Slo-Mo MOVs from iPhone results in awful MP4
FFmpeg
trac at avcodec.org
Wed Oct 8 02:56:17 CEST 2014
#4012: Transcoding Slo-Mo MOVs from iPhone results in awful MP4
--------------------------------------+----------------------------------
Reporter: hendry | Type: defect
Status: new | Priority: normal
Component: undetermined | Version: 2.4.2
Keywords: ios | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
--------------------------------------+----------------------------------
Summary of the bug: I simply want to share on the Web, videos from my
iPhone taken with the Slo-Mo feature
How to reproduce:
Transcode my MOVs to MP4s like a usually do with
https://github.com/kaihendry/recordmydesktop2.0/ and the resulting MP4's
audio is mal-aligned and the video playback is unwatchable (full of
pauses). I've tested playback on Chrome 39.0.2171.7, Firefox 32 and IOS
safari. All basically unusable result from ffmpeg.
{{{
% ffmpeg -y -i "$input" -movflags +faststart -pix_fmt yuv420p -c:v libx264
-vprofile baseline -acodec aac -strict experimental "$out"
version 2.4.2
built on Archlinux
}}}
Warning about high frame rate:
http://s.natalian.org/2014-10-07/1412660525_1364x742.png
Original "Slo-Mo": http://s.natalian.org/2014-10-07/IMG_4596.MOV
Transcoded result: http://s.natalian.org/2014-10-05/IMG_4596.mp4
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4012>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list