Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-31 Thread Gyan
On 31-08-2019 08:11 PM, Marton Balint wrote: On Sat, 31 Aug 2019, Gyan wrote: On 31-08-2019 04:14 AM, Marton Balint wrote: On Fri, 30 Aug 2019, Gyan wrote: On 22-08-2019 01:10 AM, Marton Balint wrote: On Tue, 20 Aug 2019, Devin Heitmueller wrote: A couple of follow-up Qs: Is

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-31 Thread Marton Balint
On Sat, 31 Aug 2019, Gyan wrote: On 31-08-2019 04:14 AM, Marton Balint wrote: On Fri, 30 Aug 2019, Gyan wrote: On 22-08-2019 01:10 AM, Marton Balint wrote: On Tue, 20 Aug 2019, Devin Heitmueller wrote: A couple of follow-up Qs: Is auto-detection available for all Decklink

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-30 Thread Gyan
On 31-08-2019 04:14 AM, Marton Balint wrote: On Fri, 30 Aug 2019, Gyan wrote: On 22-08-2019 01:10 AM, Marton Balint wrote: On Tue, 20 Aug 2019, Devin Heitmueller wrote: A couple of follow-up Qs: Is auto-detection available for all Decklink devices? No, but AFAIK it is for all

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-30 Thread Marton Balint
On Fri, 30 Aug 2019, Gyan wrote: On 22-08-2019 01:10 AM, Marton Balint wrote: On Tue, 20 Aug 2019, Devin Heitmueller wrote: A couple of follow-up Qs: Is auto-detection available for all Decklink devices? No, but AFAIK it is for all devices which support SDI. Generally it's the older

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-30 Thread Gyan
On 22-08-2019 01:10 AM, Marton Balint wrote: On Tue, 20 Aug 2019, Devin Heitmueller wrote: A couple of follow-up Qs: Is auto-detection available for all Decklink devices? No, but AFAIK it is for all devices which support SDI. Generally it's the older analog capture devices which don't

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-21 Thread Marton Balint
On Tue, 20 Aug 2019, Devin Heitmueller wrote: A couple of follow-up Qs: Is auto-detection available for all Decklink devices? No, but AFAIK it is for all devices which support SDI. Generally it's the older analog capture devices which don't support it. For those for which it is

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-20 Thread Devin Heitmueller
> A couple of follow-up Qs: > > Is auto-detection available for all Decklink devices? No, but AFAIK it is for all devices which support SDI. Generally it's the older analog capture devices which don't support it. > For those for which it is available, are there any edge cases in which > it sets

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-20 Thread Gyan
On 19-08-2019 07:15 PM, Ilinca Tudose wrote: Hi Marton, I want to confirm that we get correctly synced TCs when leaving out the format_code parameter and using an ffmpeg build from head (not with Gyan's patch). However, I was under the impression that we need the format_code so that we can

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-19 Thread Ilinca Tudose
Hi Marton, I want to confirm that we get correctly synced TCs when leaving out the format_code parameter and using an ffmpeg build from head (not with Gyan's patch). However, I was under the impression that we need the format_code so that we can capture different content types, in the original

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-17 Thread Gyan
On 17-08-2019 09:21 PM, Marton Balint wrote: On Sat, 17 Aug 2019, Gyan wrote: On 17-08-2019 08:42 PM, Marton Balint wrote: On Wed, 14 Aug 2019, Marton Balint wrote: On Wed, 14 Aug 2019, Gyan wrote: On 09-08-2019 04:59 PM, Ilinca Tudose wrote: Hi Marton, The issue with the

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-17 Thread Marton Balint
On Sat, 17 Aug 2019, Gyan wrote: On 17-08-2019 08:42 PM, Marton Balint wrote: On Wed, 14 Aug 2019, Marton Balint wrote: On Wed, 14 Aug 2019, Gyan wrote: On 09-08-2019 04:59 PM, Ilinca Tudose wrote: Hi Marton, The issue with the out of sync TC was reproducible on all tapes and

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-17 Thread Gyan
On 17-08-2019 08:42 PM, Marton Balint wrote: On Wed, 14 Aug 2019, Marton Balint wrote: On Wed, 14 Aug 2019, Gyan wrote: On 09-08-2019 04:59 PM, Ilinca Tudose wrote: Hi Marton, The issue with the out of sync TC was reproducible on all tapes and decks that we tested. I don't have

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-17 Thread Marton Balint
On Wed, 14 Aug 2019, Marton Balint wrote: On Wed, 14 Aug 2019, Gyan wrote: On 09-08-2019 04:59 PM, Ilinca Tudose wrote: Hi Marton, The issue with the out of sync TC was reproducible on all tapes and decks that we tested. I don't have the exact number now, but a few dozens, less than

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-14 Thread Marton Balint
On Wed, 14 Aug 2019, Gyan wrote: On 09-08-2019 04:59 PM, Ilinca Tudose wrote: Hi Marton, The issue with the out of sync TC was reproducible on all tapes and decks that we tested. I don't have the exact number now, but a few dozens, less than 100. They all had between 7 and 17 frames out

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-13 Thread Gyan
On 09-08-2019 04:59 PM, Ilinca Tudose wrote: Hi Marton, The issue with the out of sync TC was reproducible on all tapes and decks that we tested. I don't have the exact number now, but a few dozens, less than 100. They all had between 7 and 17 frames out of sync. We were not able to obtain

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-09 Thread Ilinca Tudose
Hi Marton, The issue with the out of sync TC was reproducible on all tapes and decks that we tested. I don't have the exact number now, but a few dozens, less than 100. They all had between 7 and 17 frames out of sync. We were not able to obtain anything more in sync than 7 frames. The TC sync

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-08-09 Thread Gyan
On 28-07-2019 01:37 AM, Marton Balint wrote: On Fri, 26 Jul 2019, Gyan wrote: Patch supported by and tested at Google. Seems like a huge hack for a decklink issue... ;) I wonder if there are better approaches to work around this. Like dropping all frames until we have a valid signal.

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-07-27 Thread Gyan
On 28-07-2019 01:37 AM, Marton Balint wrote: On Fri, 26 Jul 2019, Gyan wrote: Patch supported by and tested at Google. Seems like a huge hack for a decklink issue... ;) I wonder if there are better approaches to work around this. Like dropping all frames until we have a valid signal.

Re: [FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-07-27 Thread Marton Balint
On Fri, 26 Jul 2019, Gyan wrote: Patch supported by and tested at Google. Seems like a huge hack for a decklink issue... ;) I wonder if there are better approaches to work around this. Like dropping all frames until we have a valid signal. How is this repoducible? do you have an exact

[FFmpeg-devel] [PATCH] avdevice/decklink: adjust for timecode lag

2019-07-26 Thread Gyan
Patch supported by and tested at Google. Gyan From e51bd8201ddf618dce33ada70a9bc6ce2f33b07b Mon Sep 17 00:00:00 2001 From: Gyan Doshi Date: Mon, 1 Jul 2019 23:43:44 +0530 Subject: [PATCH] avdevice/decklink: adjust for timecode lag The decklink demuxer may not start receiving timecode with the