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[GH-ISSUE #201] Play ascineema recording for given time-frame. #760

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opened 2026-03-15 10:12:06 +03:00 by kerem · 8 comments

kerem commented

2026-03-15 10:12:06 +03:00

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Originally created by @dipak-pawar on GitHub (Mar 30, 2017).
Original GitHub issue: https://github.com/asciinema/asciinema/issues/201

While editing an ASCiinema file, it would be nice to be able to stop a playback at given time.

Example:
asciinema play --start-at 12s --ends-at 34s my.rec
asciinema play --start-at 101l --ends-at 412l my.rec

So the playback will start at 12s and end with 34s.

Originally created by @dipak-pawar on GitHub (Mar 30, 2017). Original GitHub issue: https://github.com/asciinema/asciinema/issues/201 While editing an ASCiinema file, it would be nice to be able to stop a playback at given time. Example: asciinema play --start-at 12s --ends-at 34s my.rec asciinema play --start-at 101l --ends-at 412l my.rec So the playback will start at 12s and end with 34s.

kerem

2026-03-15 10:12:06 +03:00

closed this issue
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feature request
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kerem commented

2026-03-15 10:12:22 +03:00

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@dipak-pawar commented on GitHub (Mar 30, 2017):

We have start-at implementaion in this #180.

I will provide implementation for ends-at if it's not done already

@dipak-pawar commented on GitHub (Mar 30, 2017): We have start-at implementaion in this #180. I will provide implementation for ends-at if it's not done already

kerem commented

2026-03-15 10:12:27 +03:00

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@ku1ik commented on GitHub (Mar 30, 2017):

I don't think this would be useful for many people, so probably not worth maintaining. Thanks for the idea anyway!

@ku1ik commented on GitHub (Mar 30, 2017): I don't think this would be useful for many people, so probably not worth maintaining. Thanks for the idea anyway!

kerem commented

2026-03-15 10:12:32 +03:00

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@dipak-pawar commented on GitHub (Mar 30, 2017):

@sickill Just curious, do we have any way to convert recording into different frames using timeline with the help of json file?

@dipak-pawar commented on GitHub (Mar 30, 2017): @sickill Just curious, do we have any way to convert recording into different frames using timeline with the help of json file?

kerem commented

2026-03-15 10:12:37 +03:00

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@ku1ik commented on GitHub (Mar 31, 2017):

I'm not sure I understand that... You mean like creating shorter recording based on the original one?

@ku1ik commented on GitHub (Mar 31, 2017): I'm not sure I understand that... You mean like creating shorter recording based on the original one?

kerem commented

2026-03-15 10:12:42 +03:00

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@dipak-pawar commented on GitHub (Mar 31, 2017):

yes I want to create short version of recording with time frame based on original one.

I have 10 minutes original recording. So I want to divide it in smaller one so I can embed it at different locations where it's needed in my html page

@dipak-pawar commented on GitHub (Mar 31, 2017): yes I want to create short version of recording with time frame based on original one. I have 10 minutes original recording. So I want to divide it in smaller one so I can embed it at different locations where it's needed in my html page

kerem commented

2026-03-15 10:12:47 +03:00

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@dipak-pawar commented on GitHub (Apr 3, 2017):

@sickill Can you help in this?

@dipak-pawar commented on GitHub (Apr 3, 2017): @sickill Can you help in this?

kerem commented

2026-03-15 10:12:52 +03:00

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@ku1ik commented on GitHub (Apr 5, 2017):

It's not as simple as it seems :) Terminals are state machines, and the recording reflects a stream of text and commands to modify that state. Because of that you can't just skip first N bytes because the following commands may be depending on the state built up so far (by the first N bytes).

To achieve what you want we would need to have a tool which would interpret the stream up to a point where you want the recording to start, and dump that state as a stream of bytes, basically establishing the "initial frame". We don't have such a tool right now unfortunatelly.

@ku1ik commented on GitHub (Apr 5, 2017): It's not as simple as it seems :) Terminals are state machines, and the recording reflects a stream of text and commands to modify that state. Because of that you can't just skip first N bytes because the following commands may be depending on the state built up so far (by the first N bytes). To achieve what you want we would need to have a tool which would interpret the stream up to a point where you want the recording to start, and dump that state as a stream of bytes, basically establishing the "initial frame". We don't have such a tool right now unfortunatelly.

kerem commented

2026-03-15 10:12:57 +03:00

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@dipak-pawar commented on GitHub (Apr 10, 2017):

Thanks @sickill

@dipak-pawar commented on GitHub (Apr 10, 2017): Thanks @sickill