Many ways to go after this. Just to get you started:
ffmpeg -i $INPUT -c:v libx264 -an -s 720x940 -crf 16 -maxrate 450k
-bufsize 380k -pix_fmt yuv420p $OUTPUT
the -an loses the audio, which I assume you don't need.
On Sat, May 13, 2017 at 11:41 PM, negin tebyani
Some more investigation:
In the config.log I see:
gas-preprocessor.pl -arch arm -as-type -- as -v
unknown as type: '--'
(...)
as: unrecognized option '-_ISOC99_SOURCE'
The first error seems to be caused by $as_type being empty string in
the ffmpeg configure script. Why this is I do not know.
On Mon, May 15, 2017 at 5:44 PM, tarun singhal wrote:
> Hi All,
>
> I need help in understanding what does mkvtimestamp_v2 filter do.
> I tried to search documentation around it but couldnt find. All I could
> find was this command
> *ffmpeg -i usopen.mp4 -f
Hi All,
I need help in understanding what does mkvtimestamp_v2 filter do.
I tried to search documentation around it but couldnt find. All I could
find was this command
*ffmpeg -i usopen.mp4 -f mkvtimestamp_v2 -qscale:v 0 a.txt*
which apparently seems to give out timestamp of each frame in the
On 5/15/17, Chris wrote:
> Hi,
>
> I'm batch transcoding h264 ts streams to h265. Lately, I replaced ffmpeg
> 3.2.4 with 3.3, and noticed that the average frame rate for transcoding
> dropped from about 2.4 to 1.0. For testing purposes, I have switched
> back to 3.2.4 for the
Hi,
I'm batch transcoding h264 ts streams to h265. Lately, I replaced ffmpeg
3.2.4 with 3.3, and noticed that the average frame rate for transcoding
dropped from about 2.4 to 1.0. For testing purposes, I have switched
back to 3.2.4 for the next file, and the frame rate went up to 3.2.4 again.