App cut frame by frame HEVC

[kiki_vg]

So far I have used app "Smart Cutter for dv and dvb", but it was for h.264.
I liked that app because I could go frame by frame very easly, and I could mark places where there are commercials and cut them out, and app would join all parts and I would have one video with no comercials, very easily to do.

Now my recordings from DVB-T2 are HEVC, so this app doesn't work for me any more.

I tried avidemux, it's OK but "Smart Cutter" was much better for me.
Can I do in avidemux like some job list, where I would mark all parts without commercials, and it would cut them and join all parts to one video? Is it possible to do something like that in avidemux, or I have to go one part by one part and do "file - append" to join them.

So, is there some app like Smart Cutter but for HEVC videos?

This is info about my video from dvb-t2 that I wanna cut and join.

Video info:

General
ID                                       : 10 (0xA)
Complete name                            : C:\Users\Kristijan\Desktop\xoro rec\record.ts
Format                                   : BDAV
Format/Info                              : Blu-ray Video
File size                                : 102 MiB
Duration                                 : 5 min 19 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 2 692 kb/s
FileExtension_Invalid                    : m2ts mts ssif

Video
ID                                       : 1081 (0x439)
Menu ID                                  : 1008 (0x3F0)
Format                                   : HEVC
Format/Info                              : High Efficiency Video Coding
Format profile                           : Main@L4.1@Main
Codec ID                                 : 36
Duration                                 : 2 min 11 s
Maximum bit rate                         : 10 000 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate                               : 50.000 FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0 (Type 0)
Bit depth                                : 8 bits
Color range                              : Limited

Audio
ID                                       : 1082 (0x43A)
Menu ID                                  : 1008 (0x3F0)
Format                                   : AAC LC SBR PS
Format/Info                              : Advanced Audio Codec Low Complexity with Spectral Band Replication and Parametric Stereo
Commercial name                          : HE-AACv2
Format settings                          : NBC
Muxing mode                              : LATM
Codec ID                                 : 17-2
Duration                                 : 5 min 18 s
Bit rate mode                            : Variable
Maximum bit rate                         : 66.0 kb/s
Channel(s)                               : 2 channels
Channel layout                           : C
Sampling rate                            : 48.0 kHz
Frame rate                               : 23.438 FPS (2048 SPF)
Compression mode                         : Lossy
Delay relative to video                  : -263 ms

[jagabo]

I tried avidemux, it's OK but "Smart Cutter" was much better for me.
Can I do in avidemux like some job list, where I would mark all parts without commercials, and it would cut them and join all parts to one video?

You're approaching it backwards. Mark and cut all the commercials. What will be left is just the show. Save.

[butterw]

In Avidemux, you cut out the parts you don't want to keep.

You'll need to re-encode if you are not cutting on keyframes.

It's also possible to save (and load) a script project file (.py) that operates on the source video files.

[kiki_vg]

You're approaching it backwards. Mark and cut all the commercials. What will be left is just the show. Save.

OK, I see. Yeah, in Smart Cutter I marked parts that I wanna keep, so in Avidemux is other way around. Thank you.

You'll need to re-encode if you are not cutting on keyframes.

Oh, true. I do not like that. Keyframes are too far away, sometimes 2 or 5 seconds.
But I tried with MKVToolNix multiplexing and then put in Avidemux, then keyframes are much better, but I noticed that then audio is very little bit out of sync.

Is there some other program like "Smart Cutter for dv and dvb" where I could cut wherever I wanted right away from original source?
All I wanna is just cut parts, join them, with no re-encode.

[krykmoon]

Is there some other program like "Smart Cutter for dv and dvb" where I could cut wherever I wanted right away from original source?
All I wanna is just cut parts, join them, with no re-encode.

It's impossible to do frame precise cuts without re-encoding at least a part of the media.

Many (many...SOOOO maaaaaany) years ago I bought a VideoReDo TVSuite license (it's a proprietary/paid software) and it was quite fine (most of the time, but not always): it had a "smart" cutting system, which re-encoded only the parts of the video where you placed the cuts and only if necessary (not on keyframes).

Anyway... to be 100% sure the resulting file will be always encoded correctly and will result 100% compliant with the specifics of the codec used.. the only way is re-encode it entirely (or cut always on keyframes).

To simply cut on keyframes another fine and nice free software is LosslessCut.

[kiki_vg]

It's impossible to do frame precise cuts without re-encoding at least a part of the media.

Many (many...SOOOO maaaaaany) years ago I bought a VideoReDo TVSuite license (it's a proprietary/paid software) and it was quite fine (most of the time, but not always): it had a "smart" cutting system, which re-encoded only the parts of the video where you placed the cuts and only if necessary (not on keyframes).

Anyway... to be 100% sure the resulting file will be always encoded correctly and will result 100% compliant with the specifics of the codec used.. the only way is re-encode it entirely (or cut always on keyframes).

To simply cut on keyframes another fine and nice free software is LosslessCut.

I see.
I'm curious, people that uploaded shows that were recorded, they have to cut out commercials, right? I guess that's HDTV, PDTV versions.
So, they re-encoded too?

What would be the best approach for my situation? So I can have good quality.
My thinking was, cut out commercials, join parts, and have original source with no commercials, no re-encoding. But I guess it doesn't work like that?

It doesnt have to be free software.

[krykmoon]

I'm curious, people that uploaded shows that were recorded, they have to cut out commercials, right? I guess that's HDTV, PDTV versions.
So, they re-encoded too?

What would be the best approach for my situation? So I can have good quality.
My thinking was, cut out commercials, join parts, and have original source with no commercials, no re-encoding. But I guess it doesn't work like that?

It doesnt have to be free software.

The problem is that you can seamlessly join a chunk of a media file with another only from a keyframe to another keyframe. That's simply because only keyframes retain the whole frame information while other frames retrieve informations (while decoding) from the nearest ones.

Quality wise it's always better not re-encode the original material at all. But if you need to remove unwanted parts of the video and cuts have to be frame precise.. there's no other way than re-encoding the whole media to be sure the resulting file will be artifact free and 100% compliant to the specifics of the codec.

Stuff you may find coming from a TV source and with commercials removed has surely been re-encoded.

[kiki_vg]

The problem is that you can seamlessly join a chunk of a media file with another only from a keyframe to another keyframe. That's simply because only keyframes retain the whole frame information while other frames retrieve informations (while decoding) from the nearest ones.

Quality wise it's always better not re-encode the original material at all. But if you need to remove unwanted parts of the video and cuts have to be frame precise.. there's no other way than re-encoding the whole media to be sure the resulting file will be artifact free and 100% compliant to the specifics of the codec.

Stuff you may find coming from a TV source and with commercials removed has surely been re-encoded.

Thank you for explanation.

I tried now VideoReDo trial version. And its working on the same principle like smart cutter. Just what I was looking for. Cut and join parts were really good and smooth, and I do not have to re-encode video.

[Budman1]

Just my 2 cents worth.. Beside beginning at a Key frame, you need to watch where your ending frame is with some cutters, especially those that use FFMPEG as the cutting engine. It can change to ending frames pts times which causes a glitch between joined frames.

For example, cutting a 250 GOP at the 249 mark, returns the following problems.

FPS Duration on final frames too large
Decreasing Ending Frame to 498

C:\Users\Bud\Desktop\3_0_test.cmd.mp4
UnSuccessful Cut at Frame 498
16.433333,B
16.466667,B
16.500000,P
16.566667,B <- 2 FRAMES TIMES TO NEXT FRAME
16.633333,P
FPS Duration on final frames too large
Decreasing Ending Frame to 497

C:\Users\Bud\Desktop\3_0_test.cmd.mp4
UnSuccessful Cut at Frame 497
16.400000,B
16.433333,B
16.466667,B
16.500000,P <- 3 FRAME TIMES TO NEXT FRAME
16.633333,P
FPS Duration on final frames too large
Decreasing Ending Frame to 496

C:\Users\Bud\Desktop\3_0_test.cmd.mp4
Successful Cut at Frame 496
16.366667,P
16.400000,B
16.433333,B
16.466667,B
16.500000,P <- .033333 BETWEEN EACH ENDING FRAMES

Just saying, this has been my results.

[krykmoon]

Just my 2 cents worth.. Beside beginning at a Key frame, you need to watch where your ending frame is

Yes.. I forgot to explicitly specify this (maybe thinking it was obvious) but both the start and the end of each cut must be on a keyframe to be 100% sure the spliced video will be compliant and with no flaws or potential issues.. when not re-encoding.

[kiki_vg]

Yes.. I forgot to explicitly specify this (maybe thinking it was obvious) but both the start and the end of each cut must be on a keyframe to be 100% sure the spliced video will be compliant and with no flaws or potential issues.. when not re-encoding.

Just my 2 cents worth.. Beside beginning at a Key frame, you need to watch where your ending frame is with some cutters, especially those that use FFMPEG as the cutting engine. It can change to ending frames pts times which causes a glitch between joined frames.

For example, cutting a 250 GOP at the 249 mark, returns the following problems.

FPS Duration on final frames too large
Decreasing Ending Frame to 498

C:\Users\Bud\Desktop\3_0_test.cmd.mp4
UnSuccessful Cut at Frame 498
16.433333,B
16.466667,B
16.500000,P
16.566667,B <- 2 FRAMES TIMES TO NEXT FRAME
16.633333,P
FPS Duration on final frames too large
Decreasing Ending Frame to 497

C:\Users\Bud\Desktop\3_0_test.cmd.mp4
UnSuccessful Cut at Frame 497
16.400000,B
16.433333,B
16.466667,B
16.500000,P <- 3 FRAME TIMES TO NEXT FRAME
16.633333,P
FPS Duration on final frames too large
Decreasing Ending Frame to 496

C:\Users\Bud\Desktop\3_0_test.cmd.mp4
Successful Cut at Frame 496
16.366667,P
16.400000,B
16.433333,B
16.466667,B
16.500000,P <- .033333 BETWEEN EACH ENDING FRAMES

Just saying, this has been my results.

Thank you guys for the tips and explanation.

I use VideoReDO, and it all looks OK, or I think it's all OK.
I can cut wherever I want with no re-encoding, I choose mkv for output, and all my devices can play that video with no problem.

[butterw]

There is some re-encoding, if you are not cutting on keyframes.

[kiki_vg]

There is some re-encoding, if you are not cutting on keyframes.

I am not an expert so I am not familiar with these terms, is this real re-encoding or not, but I can very easly cut out parts exactly where I want, and the program does this very quickly, I do not need to wait for some converting or changing codec, resolution, bitrate, format and so on.... my videos are ready almost right away, and I didn't notice any errors when I play video on my devices. It looks all OK, just what I was looking for, fast and simple way to cut out commercials from original source.

[krykmoon]

I am not an expert so I am not familiar with these terms, is this real re-encoding or not, but I can very easly cut out parts exactly where I want, and the program does this very quickly, I do not need to wait for some converting or changing codec, resolution, bitrate, format and so on.... my videos are ready almost right away, and I didn't notice any errors when I play video on my devices. It looks all OK, just what I was looking for, fast and simple way to cut out commercials from original source.

Yes, it's one of those softwares really worth their money (or at least it was when I used it several years ago.. I happily renewed my license 3 times).

It copies the video source as it is.. and re-encodes only the parts where the cut is, from the 2 adjacent chunks of the video you select to keep, trying to match the source bitrate and offer a similar quality.

[Alwyn]

VideoRedo is one of my killer apps. 10/10.