Re: [FFmpeg-user] Reducing image2pipe png decoder latency

2019-12-17 Thread Ted Park
At this point, everything has been rendered onto the black background anyway. I don’t know how the png gets decoded slower, how are these pipes being created? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] maximum of cpus or threads supported in on decoding

2019-12-17 Thread Carl Eugen Hoyos
Am Di., 17. Dez. 2019 um 21:23 Uhr schrieb heyufei2...@outlook.com : > Does ffmpeg's h264 decoder supports decoing with more than 64 cpus, say 72 > cpus ? > In windows, there are 2 processor groups, each with 36 cpus when there are 72 > cpus. > > The code in ffmpeg > MAX_THREADS is defined as

[FFmpeg-user] maximum of cpus or threads supported in on decoding

2019-12-17 Thread heyufei2...@outlook.com
Hi Does ffmpeg's h264 decoder supports decoing with more than 64 cpus, say 72 cpus ? In windows, there are 2 processor groups, each with 36 cpus when there are 72 cpus. The code in ffmpeg MAX_THREADS is defined as 64 in frame_thread_encoder.c #define MAX_THREADS 64 Thanks. John

Re: [FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Alberto Mattea
In data martedì 17 dicembre 2019 15:29:16 CET, Carl Eugen Hoyos ha scritto: > Am Di., 17. Dez. 2019 um 14:48 Uhr schrieb Alberto Mattea > : > > > > In data martedì 17 dicembre 2019 14:33:47 CET, Carl Eugen Hoyos ha scritto: > > > Am Di., 17. Dez. 2019 um 14:26 Uhr schrieb Carl Eugen Hoyos > > > :

Re: [FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Alberto Mattea
In data martedì 17 dicembre 2019 14:53:46 CET, Paul B Mahol ha scritto: > On 12/17/19, Alberto Mattea wrote: > > In data martedì 17 dicembre 2019 14:33:47 CET, Carl Eugen Hoyos ha scritto: > >> Am Di., 17. Dez. 2019 um 14:26 Uhr schrieb Carl Eugen Hoyos > >> : > >> > > >> > Am Di., 17. Dez. 2019

Re: [FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Carl Eugen Hoyos
Am Di., 17. Dez. 2019 um 14:48 Uhr schrieb Alberto Mattea : > > In data martedì 17 dicembre 2019 14:33:47 CET, Carl Eugen Hoyos ha scritto: > > Am Di., 17. Dez. 2019 um 14:26 Uhr schrieb Carl Eugen Hoyos > > : > > > > > > Am Di., 17. Dez. 2019 um 14:18 Uhr schrieb Alberto Mattea > > > : > > > > >

Re: [FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Paul B Mahol
On 12/17/19, Alberto Mattea wrote: > In data martedì 17 dicembre 2019 14:33:47 CET, Carl Eugen Hoyos ha scritto: >> Am Di., 17. Dez. 2019 um 14:26 Uhr schrieb Carl Eugen Hoyos >> : >> > >> > Am Di., 17. Dez. 2019 um 14:18 Uhr schrieb Alberto Mattea >> > : >> > > >> > > Hi all, I'm trying to

Re: [FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Paul B Mahol
On 12/17/19, Carl Eugen Hoyos wrote: > Am Di., 17. Dez. 2019 um 14:26 Uhr schrieb Carl Eugen Hoyos > : >> >> Am Di., 17. Dez. 2019 um 14:18 Uhr schrieb Alberto Mattea >> : >> > >> > Hi all, I'm trying to losslessly convert some videos from grassvalley >> > hqx to ffv1. >> > Unfortunately it seems

Re: [FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Alberto Mattea
In data martedì 17 dicembre 2019 14:33:47 CET, Carl Eugen Hoyos ha scritto: > Am Di., 17. Dez. 2019 um 14:26 Uhr schrieb Carl Eugen Hoyos > : > > > > Am Di., 17. Dez. 2019 um 14:18 Uhr schrieb Alberto Mattea > > : > > > > > > Hi all, I'm trying to losslessly convert some videos from grassvalley

Re: [FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Carl Eugen Hoyos
Am Di., 17. Dez. 2019 um 14:26 Uhr schrieb Carl Eugen Hoyos : > > Am Di., 17. Dez. 2019 um 14:18 Uhr schrieb Alberto Mattea > : > > > > Hi all, I'm trying to losslessly convert some videos from grassvalley hqx > > to ffv1. > > Unfortunately it seems the conversion is not really lossless, as the

Re: [FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Carl Eugen Hoyos
Am Di., 17. Dez. 2019 um 14:18 Uhr schrieb Alberto Mattea : > > Hi all, I'm trying to losslessly convert some videos from grassvalley hqx to > ffv1. > Unfortunately it seems the conversion is not really lossless, as the frames > md5 changes after the conversion. > Here's what I'm doing: > > -

[FFmpeg-user] Lossless encoding to ffv1 changes frames md5

2019-12-17 Thread Alberto Mattea
Hi all, I'm trying to losslessly convert some videos from grassvalley hqx to ffv1. Unfortunately it seems the conversion is not really lossless, as the frames md5 changes after the conversion. Here's what I'm doing: - Calculate md5 of the original video frames $ ffmpeg -i 01.avi -f framemd5