On Sat 13 Mar 2021 at 09:26:32 (+0530), Susmita/Rajib wrote: > On 13/03/2021, David Wright wrote: > > ... ... [snipped] ... ... [snipped] ... ... > > I (≠ OP) don't use pulseaudio as a matter of course. It's meant to > > give benefits, but can add undesired complexity. So I generally > > stick with ALSA. > ... ... [snipped] ... ... [snipped] ... ... > > It's nice to hear from you, Mr. Wright. I remember your support. > > > Most of the time, this doesn't matter, as I have developed several > > techniques over the years for capturing Transport Stream files from > > the cache, and assembling them into seamless live video, and even > > slurping files out of the browser's /proc/<PID>/fd thingies when > > youtube_dl fails to download a video. I was asked to share this technique of stealing files from the FF browser's cache, so I've attached the script that I use. I normally browse sites as a different user (named flash for historical reasons), so a typical invocation command line looks like: $ sudo -u flash /home/flash/bin/steal-from-cache.sh /home/flash/.cache/mozilla/firefox/jzq80501.default/cache2/entries/ /tmp/.0flashcache The directories firefox/jzq80501.default/ will obviously need adjustment. In my own case, even */*/ would suffice, as the flash "user" only runs one browser in one profile. There are several idiosyncrasies: The script sets file permissions to world-writeable so that I can steal the swag from user flash. The filenames are formatted to be readable but short. If you delete the file that stops it (Target/0), it only actually stops when the next file triggers. The program chatters as it captures files, so that you know whether at least your end of the process is working. It can sometimes capture and timestamp files in the wrong order (particularly when starting), or copy duplicates, so the internal times should always be used, where available, for assembling a set of files. Finally, you might not capture much if you don't have this in your magic file: # MPEG Transport Stream (MPEG-2 Part 1) and perhaps others 0 string G >0xBC string G >>0x178 string G >>>0x234 string G >>>>0x2F0 string G >>>>>0x3AC string G >>>>>>0x468 string G TS transport stream Cheers, David.
Attachment:
steal-from-cache.sh
Description: Bourne shell script