[FFmpeg-user] h264 pic_init_qp_minus26 out of range

Phillipe Laterrade laterradep at vectracom.fr
Thu May 24 14:52:15 EEST 2018

Setting the qpmin parameter to 12 changes (and reduce) the pic_init_qp_minus26...
Is it the right way to fix this issue?


-----Message d'origine-----
De : ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] De la part de Mark Thompson
Envoyé : jeudi 24 mai 2018 12:22
À : ffmpeg-user at ffmpeg.org
Objet : Re: [FFmpeg-user] h264 pic_init_qp_minus26 out of range

On 24/05/18 10:46, Phillipe Laterrade wrote:
> Hello,
> I'm experiencing a problem when transcoding to h264 :
> The pic_init_qp_minus26 parameter is out of range (-28,-30,-31..) on 
> some files but not on the whole transcoded files.

The range of pic_init_qp_minus26 is [-26 - 6 * bit_depth_luma_minus8, +25].  Does your file have a bit depth greater than 8?

- Mark
ffmpeg-user mailing list
ffmpeg-user at ffmpeg.org

To unsubscribe, visit link above, or email ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".

More information about the ffmpeg-user mailing list