Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

On 3/9/16, Andy Furniss wrote: > Sreenath BH wrote: >> On 3/8/16, Moritz Barsnick wrote: > >>> If you want the same profiles and levels, you will need to request them >>> explicitly. >>> >>> The same thing goes for the quality: libx264 defaults to crf=23, I

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

Sreenath BH wrote: On 3/8/16, Moritz Barsnick wrote: If you want the same profiles and levels, you will need to request them explicitly. The same thing goes for the quality: libx264 defaults to crf=23, I don't know about nvenc. Furthermore, encoders can trade off quality

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

On Tue, Mar 08, 2016 at 22:24:16 +0530, Sreenath BH wrote: > I wanted to know if there was a way to achieve the results I wanted > with the codec we prefer to use (nvidia) because it have significant > speed increase. You didn't say what you wanted to achieve (not directly), you reported

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

On 08 Mar 2016, at 17:54, Sreenath BH wrote: > On 3/8/16, Moritz Barsnick wrote: >> Hi Sreenath, >> >> On Mon, Mar 07, 2016 at 22:28:32 +0530, Sreenath BH wrote: >>> As can be seen the two outputs differ in the H264 profile(High vs >>> Main), bitrate,

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

On 3/8/16, Moritz Barsnick wrote: > Hi Sreenath, > > On Mon, Mar 07, 2016 at 22:28:32 +0530, Sreenath BH wrote: >> As can be seen the two outputs differ in the H264 profile(High vs >> Main), bitrate, the pixel format and of course the file sizes. > > Different encoders can have

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

Hi Sreenath, On Mon, Mar 07, 2016 at 22:28:32 +0530, Sreenath BH wrote: > As can be seen the two outputs differ in the H264 profile(High vs > Main), bitrate, the pixel format and of course the file sizes. Different encoders can have different defaults. It appears that nvenc defaults to "Main",

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

On 3/7/16, Carl Eugen Hoyos wrote: > Sreenath BH gmail.com> writes: > >> Should I rerun the ffmprg command without the "loglevel quiet" >> and report the output? > > Yes, please. > >> Please suggest. The input file is rather large, and ffmpeg > < console output is likely to be

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

Sreenath BH gmail.com> writes: > Should I rerun the ffmprg command without the "loglevel quiet" > and report the output? Yes, please. > Please suggest. The input file is rather large, and ffmpeg < console output is likely to be very long. Then cut the repeating lines in the middle of the

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

Hi Carl, Should I rerun the ffmprg command without the "loglevel quiet" and report the output? Please suggest. The input file is rather large, and ffmpeg console output is likely to be very long. thanks, Sreenath On 3/7/16, Carl Eugen Hoyos wrote: > Carl Eugen Hoyos

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

Carl Eugen Hoyos ag.or.at> writes: > Sreenath BH gmail.com> writes: > > > ffmpeg -i large.mp4 -loglevel quiet -c:a aac -c:v nvenc > > -pix_fmt yuv420p -movflags +faststart out.mp4 > > Always provide the complete, uncut console output when > asking for support here. Sorry, I forgot: Never

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

Sorry. Here is the unedited output from ffprobe. -- Original file (source file) root@ip-172-21-13-223:/tmp# ffprobe large.mp4 ffprobe version 3.0.git Copyright (c) 2007-2016 the FFmpeg developers built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4) configuration:

Re: [FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

Sreenath BH gmail.com> writes: > ffmpeg -i large.mp4 -loglevel quiet -c:a aac -c:v nvenc > -pix_fmt yuv420p -movflags +faststart out.mp4 Always provide the complete, uncut console output when asking for support here. Carl Eugen ___ ffmpeg-user

[FFmpeg-user] size and bitrate issues with nvidia accelerated transcoding

Hi all, I am trying to use nvidia's nvenc codec to transcode video files. ffmpeg has been built with both libx264 and nvenc codecs enabled. ffmpeg when run using nvenc codec creates a file that is almost double the size of input mp4 file and bitrate almost double the size of input file. This is