[FFmpeg-user] DPX to jp2 encoding
rajendran_t_k at yahoo.co.in
Wed May 28 07:14:19 CEST 2014
I have used to create jp2 (JPEG2000) with this command "ffmpeg.exe -f image2 -threads 2 -i
C:\Users\unameit\Desktop\dpx\DPX_%4d.dpx -c:v libopenjpeg -pix_fmt gbrp -strict
-2 C:\Users\unameit\Desktop\dpx\cnv\jp_cmd_%4d.jp2" I wanted to know the output of this files are losses or lossey? if it is lossey output I wanted to have command line for lossless output.
I have not tired the ffv1, can I have download ling for this?
On Wednesday, 28 May 2014 3:08 AM, Peter B. <pb at das-werkstatt.com> wrote:
On 05/27/2014 06:18 PM, Dave Rice wrote:
> Also note that libopenjpeg is slow compared to other lossless codecs in ffmpeg. I tested dpx->libopenjpeg and dpx->ffv1 and ffv1 was about 10 times faster at getting a lossless result.
I can confirm that.
I've posted some test-results, comparing different lossless codecs
available in FFmpeg (including libopenjpeg):
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