[FFmpeg-user] Playback issues with HLS on Android
Henk D. Schoneveld
belcampo at zonnet.nl
Wed May 15 09:48:47 CEST 2013
On May 14, 2013, at 11:38 PM, Walter Ebert <mail at walterebert.com> wrote:
> Hi Henk,
>> Suggestions to improve encoding speed and lowering bitrate by use of
>> the crf function and anamorphic instead of a PAR of 1:1
>> By dividing build.sh in 5 pieces, 1 for each resolution, for example
>> 1.sh - 5.sh.
>> Remove the 2 pass solution to 1 pass
>> In stead of -s 960x540 use 604x540 and for -s 1280x720 use 896x720
>> Run in parallel with
>> time ./5.sh 2>/dev/null & time ./4.sh 2>/dev/null & time ./3.sh
>> 2>/dev/null & time ./2.sh 2>/dev/null & time ./1.sh 2>/dev/null &
>> On my 4-core machine encoding drops from
>> user 8m49.890s
>> user 1m19.143s
>> Total size of all encoded files drops from
>> 30M tsorig ; original build.sh
>> 19M ts ; crf 22 instead of bitrate and anamorphic vs PAR 1:1
>> I don't know of anamorphic works on Android on Apple iPod Touch TV
>> iPad all works perfect
> I will take a closer look into your suggestions. But my script was written to get a working solution with good visual quality on Android.
Which you succeeded at and I'm very grateful for that as it helped me a lot.
> Encoding speed was not a consideration.
> At this point I am still learning by doing ;-)
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