Re: [FFmpeg-user] 4K Compression using x.265 issues
2018-11-15 17:57 GMT+01:00, Kieran O Leary : > On Thu, 15 Nov 2018, 16:53 Kieran O Leary >> On Thu, 15 Nov 2018, 16:36 Ron Barnes >> I was able to compress the file from 80GB to 27GB but I'm still having >>> major buffering issues. Would the commands below be the same for an MP4 >>> output? I have had better luck using MP4 instead of MKV. >>> >> >> You could replace the reserve_index_space 50k command with > Meant to say -movflags +faststart Or use qt-faststart from the tools directory if you have already created the mov/mp4 file without faststart. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Audio Only Fragmented MP4 - SIDX
2018-11-16 0:46 GMT+01:00, Ronak : > I'm taking a look at moving.c and the mov_write_sidx_tags calls; I'm > assuming this is the area of the code that is responsible for this. > > However, I'd have to have a way to detect the input streams are audio only; > no video tracks. What would be the best way to do that? I suspect the number of input streams is irrelevant, you are probably interested in the output streams within the mov file, you can look at mov->nb_streams or possibly mov->tracks (there may be easier ways though). Please avoid top-posting here, Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 4K Compression using x.265 issues
Thank you! -Original Message- From: ffmpeg-user On Behalf Of Paul B Mahol Sent: Friday, November 16, 2018 12:05 PM To: FFmpeg user questions Subject: Re: [FFmpeg-user] 4K Compression using x.265 issues On 11/16/18, Ron Barnes wrote: > Hi, > > When I remove the -c copy - get an error.. subtitle encoding currently > only possible from text to text or bitmap to bitmap.. then it just ends. > > Any way to preserve the subtitles? > Yes, use -c:s copy ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 4K Compression using x.265 issues
On 11/16/18, Ron Barnes wrote: > Hi, > > When I remove the -c copy - get an error.. subtitle encoding currently only > possible from text to text or bitmap to bitmap.. then it just ends. > > Any way to preserve the subtitles? > Yes, use -c:s copy ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 4K Compression using x.265 issues
Hi, When I remove the -c copy - get an error.. subtitle encoding currently only possible from text to text or bitmap to bitmap.. then it just ends. Any way to preserve the subtitles? -Ron -Original Message- From: ffmpeg-user On Behalf Of Paul B Mahol Sent: Friday, November 16, 2018 9:02 AM To: FFmpeg user questions Subject: Re: [FFmpeg-user] 4K Compression using x.265 issues On 11/16/18, Ron Barnes wrote: > All, > > For some reason the below command is not working right. I am unable > to compress my movie by an significant amount. > The input movie (MYMOVIE.Mkv) is just over 55GB and the resulting > output is just over 53GB. > > I thought (and I am probably wrong) that by raising or lowering the > -crf value would increase or decrease the size of my output file. No > matter what value I use, be it 18 or 28, the output file size is always the > same. > > Can anyone determine where I'm going south in order to decrease the > files's footprint (size) yet still preserve the movie quality? > > I want to take all the audio streams (only audio) and I am converting > them to mp3 because I do not have a very good sound system and the > actual 7.1 audio stream sounds awful. > > ffmpeg -i "MYMOVIE.Mkv" -c:v libx265 -preset medium -map 0 -c:a:0 > libmp3lame > -b:a:0 128k -c copy -reserve_index_space 1000k -crf 28 -s 3840x2160 > -b:v 10M -ac 2 -c:a aac -b:a 128k -metadata title="MYMOVIE" > COMPRESSED_MYMOVIE.mkv Remove: -c copy. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 4K Compression using x.265 issues
On 11/16/18, Ron Barnes wrote: > All, > > For some reason the below command is not working right. I am unable to > compress my movie by an significant amount. > The input movie (MYMOVIE.Mkv) is just over 55GB and the resulting output is > just over 53GB. > > I thought (and I am probably wrong) that by raising or lowering the -crf > value would increase or decrease the size of my output file. No matter what > value I use, be it 18 or 28, the output file size is always the same. > > Can anyone determine where I'm going south in order to decrease the files's > footprint (size) yet still preserve the movie quality? > > I want to take all the audio streams (only audio) and I am converting them > to mp3 because I do not have a very good sound system and the actual 7.1 > audio stream sounds awful. > > ffmpeg -i "MYMOVIE.Mkv" -c:v libx265 -preset medium -map 0 -c:a:0 libmp3lame > -b:a:0 128k -c copy -reserve_index_space 1000k -crf 28 -s 3840x2160 -b:v 10M > -ac 2 -c:a aac -b:a 128k -metadata title="MYMOVIE" COMPRESSED_MYMOVIE.mkv Remove: -c copy. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 4K Compression using x.265 issues
On Fri, 16 Nov 2018, 12:00 Ron Barnes All, > > For some reason the below command is not working right. I am unable to > compress my movie by an significant amount. > The input movie (MYMOVIE.Mkv) is just over 55GB and the resulting output > is just over 53GB. > > I thought (and I am probably wrong) that by raising or lowering the -crf > value would increase or decrease the size of my output file. No matter > what value I use, be it 18 or 28, the output file size is always the same. > > Can anyone determine where I'm going south in order to decrease the > files's footprint (size) yet still preserve the movie quality Yes,you are manually setting the bitrate with your -b:v 10M command. Remove that and try again. Best, Kieran ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] 4K Compression using x.265 issues
All, For some reason the below command is not working right. I am unable to compress my movie by an significant amount. The input movie (MYMOVIE.Mkv) is just over 55GB and the resulting output is just over 53GB. I thought (and I am probably wrong) that by raising or lowering the -crf value would increase or decrease the size of my output file. No matter what value I use, be it 18 or 28, the output file size is always the same. Can anyone determine where I'm going south in order to decrease the files's footprint (size) yet still preserve the movie quality? I want to take all the audio streams (only audio) and I am converting them to mp3 because I do not have a very good sound system and the actual 7.1 audio stream sounds awful. ffmpeg -i "MYMOVIE.Mkv" -c:v libx265 -preset medium -map 0 -c:a:0 libmp3lame -b:a:0 128k -c copy -reserve_index_space 1000k -crf 28 -s 3840x2160 -b:v 10M -ac 2 -c:a aac -b:a 128k -metadata title="MYMOVIE" COMPRESSED_MYMOVIE.mkv Thank you, -Ron ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
